WO2021260709A1

WO2021260709A1 - Adjustable cart

Info

Publication number: WO2021260709A1
Application number: PCT/IL2021/050785
Authority: WO
Inventors: Alexander GAL
Original assignee: Gal Alexander
Priority date: 2020-06-27
Filing date: 2021-06-27
Publication date: 2021-12-30

Abstract

A cart including a load carrier and an adjustable support system including a chassis and one or more arms adjustably coupled to the load carrier at a first end and adjustably coupled to the chassis at a second end, the cart being retractable from an open extended state to a retracted closed state and wherein the adjustable support system is configured to translate the load carrier and continuously maintain an intersection of a line of gravity of the cart with a base-of-support of the cart.

Description

ADJUSTABLE CART

CROSS REFERENCE TO RELATED APPLICATIONS

[0001] This application claims the benefit of priority of U.S. Provisional Patent Application No. 63/045,053 titled “ADJUSTABLE CART”, filed June 27, 2020, the contents of which are incorporated herein by reference in their entirety.

FIELD OF THE INVENTION

[0002] The present invention, in some embodiments thereof, relates to carts and, more particularly, but not exclusively, to folding carts.

BACKGROUND

[0003] Carts such as shopping carts are commonly used to transport merchandise. Commonly used cart usually comprise a basket coupled to one or more wheels with which the basket is driven by a user from one location to another. Commonly used carts comprise handles with which a user can move the cart from one location to another.

[0004] The foregoing examples of the related art and limitations related therewith are intended to be illustrative and not exclusive. Other limitations of the related art will become apparent to those of skill in the art upon a reading of the specification and a study of the figures.

SUMMARY

[0005] The following embodiments and aspects thereof are described and illustrated in conjunction with systems, tools and methods which are meant to be exemplary and illustrative, not limiting in scope.

[0006] According to an aspect of some embodiments of the invention there is provided a cart, including a load carrier, and an adjustable support system including: a chassis, and at least one arm adjustably coupled to the load carrier at a first end and adjustably coupled to the chassis at a second end, the cart being retractable from an open extended state to a retracted closed state, and wherein the adjustable support system is configured to translate the load carrier and continuously maintain an intersection of a line of gravity of the cart with a base-of-support of the cart. In some embodiments, the load carrier is slidable along at least a portion of the at least one arm. In some embodiments, the support is adjustable from one open state to another such that when the chassis is placed onto a surface, the line of gravity of the cart continuously intersects the base-of-support of the cart throughout the adjustment.

[0007] According to some embodiments, the arm includes a first portion and a second portion the first portion is adjustably coupled to the chassis at one end and to the chassis at a second end and the second portion is coupled to the load carrier. In some embodiments, the first portion is coupled to the second portion via an upper joint such that the second portion is rotatable about the upper joint in relation to the first portion. In some embodiments, the upper joint includes one or more of a hinge, sliding hinge, a rail or any combination thereof. In some embodiments, the first portion is slidable onto the second portion. In some embodiments, the second portion includes a frame configured to accommodate the first portion of the arm. In some embodiments, the load carrier includes at least one handle and wherein the at least one handle is moveably coupled to the arm.

[0008] According to some embodiments, the load carrier includes at least one handle and wherein the at least one handle is slidable along at least a portion of the length of the arm. In some embodiments, the chassis includes a plurality of independent legs adjustably coupled to the arm. In some embodiments, the chassis is coupled to the arm at a chassis joint, and the chassis joint includes an axis of rotation such that the chassis is adjustable in relation to the arm. In some embodiments, the length of the arm is extendable. In some embodiments, a portion of the load carrier includes a portion configured to accommodate at least a portion of the support at a closed state. In some embodiments,

[0009] According to an aspect of some embodiments of the invention there is provided a cart, including: a load carrier, and an adjustable support system including at least one arm, and a chassis, the at least one arm being adjustably coupled to the load carrier at a first end and adjustably coupled to the chassis at a second end, the cart being retractable from an open extended state to a retracted closed state, the adjustable support system is configured to translate the load carrier in relation to the chassis, and wherein at a closed state, the support is retracted to fit within a portion of the load carrier. In some embodiments, the load carrier includes a portion configured to accommodate the support at a closed state. In some embodiments, the load carrier is slidable along at least a portion of the arm.

[0010] According to some embodiments, the support is adjustable from one open state to another such that when the chassis is placed onto a surface, the line of gravity of the cart continuously intersects the base-of-support of the cart throughout the adjustment. In some embodiments, the arm includes a first portion and a second portion the first portion is adjustably coupled to the chassis at one end and to the chassis at a second end and the second portion is coupled to the load carrier. In some embodiments, the first portion is coupled to the second portion via an upper joint such that the second portion is rotatable about the upper joint in relation to the first portion. In some embodiments, the upper joint includes one or more of a hinge, sliding hinge, a rail or any combination thereof. In some embodiments, the first portion is slidable onto the second portion. In some embodiments, the second portion includes a frame configured to accommodate the first portion of the arm.

[0011] According to some embodiments, the load carrier is movably coupled to the second portion by at least one handle. In some embodiments, the at least one handle is slidable along at least a portion of the length of the arm. In some embodiments, the chassis includes a plurality of independent legs adjustably coupled to the arm. In some embodiments, the chassis is coupled to the arm at a chassis joint, and the chassis joint includes an axis of rotation such that the chassis is adjustable in relation to the arm. In some embodiments, the length of the arm is extendable.

[0012] According to an aspect of some embodiments of the invention there is provided a method for adjusting a cart from an open state to a closed state, including: placing load carrier of a cart on a surface, the cart including a cart adjustable support system having at least a first and a second portions and a chassis, adjusting the adjustable portions in respect to each other, and lifting the chassis towards the first portion, and positioning at least one of the first portion, the second portion and the chassis adjacent to the load carrier. In some embodiments, the method includes retracting the length of the first and/or second portion. In some embodiments, the method includes rotating the chassis towards the first portion. In some embodiments, the method includes sliding the chassis. [0013] According to some embodiments, the method includes sliding the first portion onto the second portion. In some embodiments, the method includes aligning the first portion with the second portion.

[0014] According to an aspect of some embodiments of the invention there is provided a method for adjusting a cart from a closed state to an open state, the method includes: opening a portion of a cart being in a closed state and the method includes: a load carrier placed on a surface, and an adjustable support system the method includes at least one of a first portion and a second portions, and a chassis, adjusting the at least one portion at a first end to the chassis, adjusting the at least one portion at a second end to the load carrier, extending the first portion and/or the second portion, and positioning the chassis onto a platform, and lifting the load carrier from the surface.

[0015] According to some embodiments, the method includes extending the length of the first and/or second portion. In some embodiments, the method includes sliding the first portion away from the second portion. In some embodiments, the method includes rotating the first portion away from the second portion such that the chassis is positioned between the second state and the platform. In some embodiments, the method includes sliding and/or rotating the chassis away from the first portion. In some embodiments,

[0016] According to an aspect of some embodiments of the invention there is provided a system for a self-adjusting cart, including: a cart, including: a load carrier, and an adjustable support system including at least one arm, and a chassis, the at least one arm being adjustably coupled to the load carrier at a first end and adjustably coupled to the chassis at a second end, the cart being retractable from an open extended state to a retracted closed state, the adjustable support system is configured to translate the load carrier, at least one motor coupled to the support, and a control unit coupled to the motor, wherein the control unit controls the adjustment of the support via the motor to maintain the line of gravity of the cart intersecting with the base-of-support of the cart.

[0017] According to some embodiments, the system includes one or more of a strain gauge, proximity sensor, optical sensor, pressure sensor and a Global Positioning System. In some embodiments, the one or more motor is coupled to at least one of the first portion, second portion, chassis, and load carrier. [0018] In addition to the exemplary aspects and embodiments described above, further aspects and embodiments will become apparent by reference to the figures and by study of the following detailed description.

BRIEF DESCRIPTION OF THE FIGURES

[0019] Exemplary embodiments are illustrated in referenced figures. Dimensions of components and features shown in the figures are generally chosen for convenience and clarity of presentation and are not necessarily shown to scale. The figures are listed below.

[0020] Figs. 1A, IB, 1C, and ID, are schematic illustrations of an exemplary embodiment of a cart, in accordance with some embodiments of the present invention;

[0021] Figs. 2A and 2B are perspective view and side view simplified illustrations of an embodiment of a cart in accordance with some embodiments of the present invention;

[0022] Figs. 3 A, 3B, 3C, 3D, 3E, 3F, 3G, 3H, 31, 3J, and 3K are side view illustrations of an exemplary embodiments of a cart during retraction of a support of the cart, in accordance with some embodiments of the present invention;

[0023] Reference is made to Figs. 4A, 4B, and 4C, which are side view simplified illustrations of exemplary embodiments of a cart in a closed state, according to some embodiments of the present invention;

[0024] Fig. 5A is a flow chart illustrating a method of retracting a cart from an open state to a closed state, in accordance with some embodiments of the present invention;

[0025] Fig. 5B is a flow chart illustrating a method of opening a cart from a closed state to an open state, in accordance with some embodiments of the present invention;

[0026] Fig. 6 is a simplified illustration of a system of a self-adjusting cart, in accordance with some embodiments of the present invention; and

[0027] Fig. 7A, 7B, and 7C are side view simplified illustrations of exemplary embodiments of a cart, in accordance with some embodiments of the present invention. DETAILED DESCRIPTION

[0028] According to an aspect of some embodiments of the present invention there is provided a cart. In some embodiments, the cart comprises a load carrier. In some embodiments, the cart comprises an adjustable support system coupled to and supports the load carrier. In some embodiments, the support comprises one or more arms adjustably coupled to the load carrier. In some embodiments, the cart comprises a chassis adjustably coupled to the one or more arms. In some embodiments, the cart is retractable from an open extended state to a retracted closed state. In some embodiments, the adjustable support system is configured to translate the load carrier and continuously maintain an intersection of a line of gravity of the cart with the base-of-support of the cart.

[0029] According to an aspect of some embodiments of the present invention there is provided a cart comprising an adjustable support system. In some embodiments, the adjustable support system is retractable. In some embodiments, the retractable support comprises a first portion and a second portion. In some embodiments, the retractable support is sized and fitted to fit into at least a portion of the load carrier. In some embodiments, the load carrier is sized and fitted to accommodate at least a portion of the retracted support.

[0030] According to an aspect of some embodiments of the present invention there is provided a method for adjusting a cart from an open state to a closed state. In some embodiments, the method comprises placing a load carrier onto a surface. In some embodiments, the cart comprises an adjustable support system comprising a chassis. In some embodiments, the retractable support comprises a first portion and a second portion. In some embodiments, the method comprises lifting the chassis towards the first portion. In some embodiments, the method comprises positioning the first portion adjacent to the second portion.

[0031] According to an aspect of some embodiments of the present invention there is provided a method for adjusting a cart from a closed state to an open state. In some embodiments, the method comprises opening a portion of the cart positioned in a closed state onto a surface, by extending the first portion away from the second portion. In some embodiments, extending the first portion comprises pivotly rotating the first portion in respect to the second portion. In some embodiments, extending the first portion comprises sliding the first portion in respect to the second portion. In some embodiments, the method comprises positioning the chassis onto a platform. In some embodiments, the method comprises lifting the load carrier from the surface.

According to an aspect of some embodiments of the present invention there is provided a system of a self-adjusting cart. In some embodiments, the system comprises a cart comprising an adjustable support system. In some embodiments, the system comprises one or more motors coupled to the cart. In some embodiments, the system comprises a control unit coupled to the cart. In some embodiments, the control unit communicates with and controls the motor. In some embodiments, the motor adjusts the support. In some embodiments, the control unit communicates with and controls the motor to adjust the support and maintain intersection of a line of gravity of the cart with the base-of-support of the cart.

Cart

[0032] Reference is made to Figs. 1A, IB, 1C and ID, which are schematic illustrations of an exemplary embodiment of a cart in open and closed states, in accordance with some embodiments of the invention. In some embodiments, the cart 100 comprises a load carrier 102. In some embodiments, the cart comprises an adjustable support system 104. In some embodiments, the cart 100 and/or load carrier 102 is configured to hold, carry and/or transport objects from one place to another. In some embodiments, the load carrier 102 is configured to hold the objects being carried by the cart 100. In some embodiments, the support 104 is configured to translate the load carrier 102 from one place to another. In some embodiments, the cart 100 comprises one or more open states, as depicted, for example, by Figs. 1 A, IB, and 1C, and one or more closed states, as depicted, for example, by Fig. ID.

[0033] In some embodiments, the load carrier 102 is a portion of the cart in which objects can be placed, such as, for example, a bin, a crate, a box, a platform, a basket, a container, a hook and/or any other carrying or supporting element.

[0034] In some embodiments, the support 104 comprises a chassis 110. In some embodiments, the support 104 comprises one or more arms 120 configured to couple the load carrier 102 to the chassis 110. In some embodiments, the location and/or spatial orientation of the load carrier 102 in relation to the chassis 110 is manipulated by the position and/or configuration of the one or more arms 120.

[0035] In some embodiments, the arm 120 comprises at least a first portion 106 (106-1 and 106-2) and a second portion 108. In some embodiments, the first portion 106 is adjustably (e.g., pivotly) coupled to the second portion 108 at an upper joint 112 at a first end of the first portion 106. In some embodiments, the first portion 106 is adjustably (e.g., pivotly) coupled to the chassis 110 at a chassis joint 114 at a second end of the first portion 106. In some embodiments, the second portion 108 is coupled to the load carrier 102.

[0036] In some embodiments, portion 106 comprises two or more segments 106-1 and 106-2, at least one of which moveable in respect to the other. In the exemplary embodiment depicted in Fig. 2A, segment 106-1 is configured to slide over and accommodate segment 106-2 thus shortening a length of first portion 106 in a telescope fashion. Alternatively, and optionally and in some embodiments, segment 106-1 comprises a rail configured to slide along segment 106-2 thus shortening a length of first portion 106. Alternatively, and optionally and in some embodiments, segment 106-1 is hingedly coupled to segment 106-2 and fold in respect to segment 106-2 thus shortening a length of first portion 106.

[0037] In some embodiments, and as described in greater detail elsewhere herein, the load carrier 102 is slidably coupled to the arm 120. In some embodiments, the load carrier 102 is slidable along at least a portion of the arm 120. In some embodiments, the load carrier 102 is slidable along the first portion 106. In some embodiments, the load carrier 102 is slidable along the second portion 108.

[0038] In some embodiments, the cart 100 comprises a plurality of arms 120. In some embodiments, the plurality of arms 120 are coupled to the load carrier 102. In some embodiments, the plurality of arms 120 are coupled to opposite sides of the load carrier 102. In some embodiments, the plurality of arms 120 are coupled to the chassis 110. In some embodiments, the plurality of arms 120 are coupled to opposite sides of the chassis 110. In some embodiments, the arms 120 are positioned parallel to each other. In some embodiments, the upper joints 112 of the plurality of arms 120 are positioned parallel to each other. In some embodiments, the chassis joints 114 of the plurality of arms 120 are positioned parallel to each other.

[0039] In some embodiments, and as explained in greater detail elsewhere herein, the arm 120 comprises a frame, for example, rectangular frame. In some embodiments, the frame is integral with one or more of the first portion 106 and the second portion 108.

[0040] In some embodiments, the first portion 106 and/or second portion 108 comprises a rod. In some embodiments, the first portion 106 and/or second portion 108 is rigid or semi rigid. In some embodiments, the length of the first portion 106 and/or second portion 108 is extendable, for example, telescopically. In some embodiments, the length of the first portion 106 and/or the second portion 108 is between 10- 100cm.

[0041] In some embodiments, the upper joint 112comprises a hinge, sliding hinge, a rail or any combination thereof. In some embodiments, the upper joint 112comprises an axis of rotation about which one of the first portion 106 and/or the second portion 108 rotates. In some embodiments, the second portion 108 is rotatable about the upper joint 112in relation to the first portion 106. In some embodiments, the first portion 106 rotatable about the upper joint 112in relation to the second portion 108.

[0042] In some embodiments, one of the first portion 106 and/or second portion 108 are slidable onto one another. In some embodiments, the first portion 106 comprises a rail configured to accommodate the second portion 108. In some embodiments, the second portion 108 comprises a rail configured to accommodate the first portion 106.

[0043] In some embodiments, the chassis joint 114 comprises a hinge, sliding hinge, rail, or any combination thereof. In some embodiments, the chassis joint 114 comprises an axis of rotation about which at least one of the first portion 106 and/or the chassis 110 rotate. In some embodiments, the first portion 106 is rotatable about the chassis joint 114 in relation to the chassis 110. In some embodiments, the chassis 110 is rotatable about the chassis joint 114 in relation to the first portion 106 and/or support 104.

[0044] In some embodiments, one of the first portion 106 and/or chassis 110 are slidable onto one another. In some embodiments, the first portion 106 comprises a rail configured to accommodate the chassis 110. In some embodiments, the chassis 110 comprises a rail configured to accommodate the first portion 106. In some embodiments, and as described in greater detail elsewhere herein, the chassis 110 comprises a plurality of legs which are retractable into the first portion 106.

[0045] In some embodiments, the configuration of the arm 120 is changeable by one or more of rotation of the first portion 106 about the upper joint 112, rotation of the second portion 108 about the upper joint 112, extension of the first and/or second portion 106/108, or any combination thereof. In some embodiments, the position of the arm 120 is adjustable in relation to the chassis 110 by rotation of the first portion 106 about the chassis joint 114.

[0046] In some embodiments, the distance between the chassis 110 and the load carrier 102 is adjustable, for example, by extending the length of the first portion 106, changing the angle between the first portion 106 and the second arm 108, changing the angle between the first portion 106 and the chassis 110, or any combination thereof.

[0047] A potential advantage of the cart 100 comprising an upper joint 112and a chassis joint 114 is in that the angle between the first arm 106 and/or the chassis 110 and the angle between the first arm 106 and the second arm 108 are adjustable, such that the special orientation of the load carrier 102 in relation to the case 110 can be maintained fixed.

[0048] A potential advantage of the adjustability of the upper joint 112and the chassis joint 114 is in that the center of mass of the cart can be maintained stationary in relation to the chassis 110 throughout the adjustment of the support 104.

Chassis

[0049] Reference is made to Figs. 2A and 2B, which are perspective view and side view simplified illustrations of an embodiment of a cart in accordance with some embodiments of the present invention.

[0050] In some embodiments, the chassis 110 is configured to define the base-of-support of the load carrier 102 and/or cart 100 at an open state thereof, for example, by comprising a frame within which the base-of-support of the cart 100 is defined. In some embodiments, the chassis 110 comprises one or more independent legs 122-1/122-2/122-3/122-4 (collectively referred to as legs 122). In some embodiments, the leg 122 is adjustably coupled to the arm 120 and/or the first portion 106. In some embodiments, the chassis 110 comprises one or more wheels 116 coupled to the legs 122.

[0051] In some embodiments, the legs 122 are rigid or semi-rigid. In some embodiments, the legs 122 comprise one or more rods. In some embodiments, the length of the legs 122 is extendable. In some embodiments, the length and/or width of the chassis is changeable by one or more of changing the position of the legs in relation to one another, changing the distance between one or more legs 122, and changing the length of one or more legs 122.

[0052] A potential advantage of the chassis 110 having an adjustable width and/or length is in that the base-of-support of the cart 100 is adjustable to maintain balance of the load carrier 102.

[0053] In some embodiments, the legs 122 are coupled to each other. In some embodiments, the legs 122 are coupled to the arm 120 at the chassis joints 114-1/114-2 (collectively referred to as chassis joints 114). In some embodiments, one or more of the legs 122 comprise the shape of a rectangle, an H, a X, E, or the like. In some embodiments, a plurality of legs 122 form a chassis 110 having a shape of a rectangle, an H, E, X, or the like. In some embodiments, the position of one or more of the legs 122 is moveable in relation to another leg 122. In some embodiments, the legs 122 are independently moveable in relation to one another.

[0054] In some embodiments, each chassis joint 114 couples between one leg 122 and the first portion 106. In some embodiments, each chassis joint 114 couples between a plurality of legs 122 and the first portion 106.

[0055] In some embodiments, at an open state of the cart 100, the legs 122 are positioned such that the area of the chassis 110 covers at least the projection of one or more of the arm 120, first portion 106, second portion 108 and/or load carrier 102.

[0056] In some embodiments, the chassis comprises 3-8 wheels 116. In some embodiments, each leg comprises at least one wheel 116. In some embodiments, and as described in greater detail elsewhere herein, the chassis 110 comprises brakes.

[0057] In some embodiments, and as described in greater detail elsewhere herein, the wheels 116 are driven by one or more motors. In some embodiments, and as described in greater detail elsewhere herein, the position of the legs 122 is adjusted by one or more motors.

[0058] In some embodiments, the length of each leg 122 ranges between 10-100cm. In some embodiments, the length of each leg 122 ranges between 10-60cm. In some embodiments, the length of each leg 122 ranges between 30-50cm.

[0059] In some embodiments, the width of the chassis 110 ranges between 30- 150cm. In some embodiments, the width of the chassis 110 ranges between 40- 120cm. In some embodiments, the width of the chassis 110 ranges between 60- 100cm.

[0060] In some embodiments, the length of the chassis 110 ranges between 30- 150cm. In some embodiments, the length of the chassis 110 ranges between 40- 120cm. In some embodiments, the length of the chassis 110 ranges between 60-100cm.

Arm

[0061] In some embodiments, the arm 120 is positioned between the chassis 110 and the load carrier 102. In some embodiments, the second portion 108 of the arm 120 supports the load carrier 102 at one or more point of support 128. in some embodiments, the point of support 128 comprises a lock and/or joint. In some embodiments, and as described in greater detail elsewhere herein, the point of support 128 comprises a handle 124 which holds the load carrier 102 at a specified position, e.g., a fixed position, a moveable position, and a dynamic position which is changed in order to maintain balance of the cart 100.

[0062] In some embodiments, the second portion 108 comprises a frame 130. In some embodiments, the frame 130 is rigid or semi-rigid. In some embodiments, the frame 130 is collapsible, for example, in some embodiments the frame 130 comprises a plurality of foldable portions. In some embodiments, the frame 130 comprises a shape fit to accommodate the load carrier 102. In some embodiments, the frame 130 comprises a rail 132 in which the load carrier 102 is slidable. In some embodiments, and as described in greater detail elsewhere herein, the load carrier 102 comprises one or more handles 124 which is slidable along the frame 130, the second portion 108, and/or at least a portion of the arm 120. [0063] In some embodiments, the frame comprises a bumper 134 set to limit the movement of the load carrier 102 in one or more directions. In some embodiments, the bumper 134 is shock absorbing. In some embodiments, the bumper 134 is positioned to intersect the line of movement of the load carrier 102. In some embodiments, the frame 130 and/or bumper 134 is positioned such that there is a distance between an edge of the load carrier 102 (i.e., edge 138) and an outermost edge of the frame 103 (i.e., outermost edge 140), such that an incoming obstruction is obstructed by the frame 130 before reaching the load carrier 102.

[0064] In some embodiments, the frame 130 comprises a length and/or width are equal to or larger than the length and/or width of the load carrier 102. In some embodiments, the dimensions of the frame 130 are equal to or larger than the dimensions of the load carrier 102 such that the load carrier 102 is moveable within the frame 130. In some embodiments, the load carrier 102 is slidable along the width and/or length of the frame 130.

[0065] In some embodiments, the first portion 106 comprises one or more projections 126. For example, in the exemplary embodiment depicted by Fig. 2B, the cart 100 comprises a plurality of projections 126-1/126-2/126-3 (collectively referred to as projections 126). In some embodiments, the first portion 106 comprises a plurality of projections 126 of which at least two are maintained parallel to one another. In some embodiments, the cart 100 comprises a plurality of projections 126 of which at least two are maintained parallel to each other throughout an adjustment of the cart 100 from one state to another.

[0066] In some embodiments, the first portion 106 of the arm 120 and/or the one or more projection 126 is coupled to the frame 130 at one or more conjunctions 142. In some embodiments, the one or more projection 126 is coupled to the chassis 110 on one end and to the frame 130 at a second end. In some embodiments the length of the projection 126 is extendable, for example, telescopically.

[0067] In some embodiments, the conjunctions 142 comprise one or more upper joints 112. In some embodiments, the upper joint 112 comprises an axis of rotation between one end of one or more projection 126 and the frame 130 and/or conjunction 142. In some embodiments, the upper joint 112 and/or conjunction 142 is slidable within frame 130. In some embodiments, the projection 126 and/or first portion 106 is slidable within the frame

130.

[0068] In some embodiments, the projection 126 is coupled to the leg 122 of the chassis 110. In some embodiments, each projection 126 is coupled to one leg 122 such that at a closed state, the leg 122 folds onto the projection 126.

Closed and Open States of the Cart

[0069] In some embodiments, at one or more of the open states, when the support 104 of the cart 100 is positioned on a surface, the support 104 comprises the base-of-support of the load carrier 102 and/or cart 100. In some embodiments, at one or more of the open states, the support 104 is set to maintain the spatial location and/or orientation of the load carrier 102 fixed. In some embodiments, the support 104 is adjustable from one or more open state to another while maintaining the spatial location and/or orientation of the load carrier 102 fixed. In some embodiments, the support 104 is adjustable from one or more open state to one or more closed state while maintaining the spatial location and/or orientation of the load carrier 102 fixed.

[0070] In some embodiments, the support 104 is adjustable from one open state to another such that when the chassis 110 is placed onto a surface, the line of gravity 118 of the cart 100 continuously intersects the base-of-support of the cart 100 throughout the adjustment.

[0071] In some embodiments, at a closed state, the load carrier 102 is set onto a surface, such as, for example, a trunk of a car. In some embodiments, at a closed state of the cart 100, the support 104 comprises a retracted state. In some embodiments at the closed state of the cart 100, the support 104 is folded, bent, collapsed, packed, and/or the like. In some embodiments, and as explained in greater detail elsewhere herein, the retracted support 104 fits into a portion of the load carrier 102.

Movable Load carrier

[0072] In some embodiments, the load carrier 102 is rigid, semi-rigid, or flexible. In some embodiments, the load carrier 102 is collapsible and/or foldable. In some embodiments, the cart 100 comprises one or more handles 124 configured to couple between the load carrier 102 and the second portion 108. In some embodiments, the load carrier 102 comprises the handle 124. In some embodiments, the handle 124 is movably coupled to the arm 120. In some embodiments, the handle 124 is slidably coupled to the arm 120. In some embodiments, the handle 124 is slidable along at least a portion of the length of the arm

120.

[0073] In some embodiments, the length of the load carrier 102 is 0.5- 1.5m. In some embodiments, the length of the load carrier 102 is 0.5- lm. In some embodiments, the length of the load carrier 102 is 0.7-lm.

[0074] In some embodiments, the width of the load carrier 102 is 0.2- 1.5m. In some embodiments, the width of the load carrier 102 is 0.2-0.75m. In some embodiments, the width of the load carrier 102 is 0.2-0.6m.

[0075] In some embodiments, the depth of the load carrier 102 is 0.2- 1.5m. In some embodiments, the depth of the load carrier 102 is 0.2-0.8m. In some embodiments, the depth of the load carrier 102 is 0.2-0.65m.

[0076] In some embodiments, the one or more handle 124 is a portion of the load carrier which is configured to accommodate the second portion 108. In some embodiments, the second portion 108 comprises the one or more handle 124 onto which the load carrier 102 is coupled. In some embodiments, the handle 124 comprises a slot and/or track in which the second portion 108 fits at an open and/or closed state of the cart. In some embodiments, the handle 124 comprises a slot and/or track in which the support 104 fits at a closed state of the cart.

[0077] For example, in some embodiments the handle 124 is one or more of a hoop, hook, clasp, or the like, which are slidable along the length of the second portion 108 and couplable to the load carrier 102.

[0078] In some embodiments, the handles 124 are slidable along the second portion 108. In some embodiments, the handles are lockable onto the second portion 108. In some embodiments, and as described in greater detail elsewhere herein, the position of the load carrier 102 in relation to the second portion 108 is controlled by one or more motors.

[0079] In some embodiments, the spatial location and/or of the load carrierl02 is changeable in relation to the chassis 110 and/or the second portion 108 by one or more of sliding the load carrier along the length of the second portion 108, changing the angle between the first portion 106 and the second portion 108, changing the angle between the second portion 108 and the chassis 110, and changing the distance between the second portion 108 and the chassis 110.

[0080] In some embodiments, the spatial location and/or orientation of the load carrier 102 is maintained fixed throughout the adjustment of the spatial location and/or of the load carrierl02 in relation to the second portion 108 and/or the chassis 110.

[0081] In some embodiments, the spatial location and/or of the load carrier 102 is changeable in relation to the chassis 110 and or the second portion 108 which maintaining the line of gravity (as depicted by lines 118-1/118-2/118-3 in Figs. 1A, IB, and 1C respectively) of the cart 100 stationary. In some embodiments, the spatial location and/or orientation of the load carrier 102 is changeable in relation to the chassis 110 and or the second portion 108 which maintaining the line of gravity of the cart 100 within a range of locations which intersect with the base-of-support of the cart 100. In some embodiments, the spatial location and/or of the load carrier 102 is changeable in relation to the chassis 110 and or the second portion 108 which maintaining the line of gravity of the cart 100 within a range of locations which intersect with the chassis 110.

[0082] For example, in Fig. 1A the cart 100 is at an open state wherein the line of gravity 118-1 of the cart 100 intersects the first portion 106 and the chassis 110. The cart 100 can be adjusted from the open state depicted by Fig. 1A to any one or more open states, for example as depicted by Fig. IB and 1C, wherein the line of gravity 118-2 and 118-3, respectively, intersects with the chassis 110 at a location between the load carrier 102 and the first portion 106.

[0083] In some embodiments, the cart 100 maintains its center of gravity 118 by shifting the position of any one of the load carrier 102, the first portion 106, and the second portion 108, in relation to the chassis 110. In some embodiments, the cart 100 maintains its center of gravity 118 by shifting the positions of the one or more legs 122 of the chassis 110 in relation to one another. In some embodiments, and as described in greater detail elsewhere herein, the cart 100 comprises one or more sensors which determine the position of the line of gravity 118 of the cart 100. [0084] A potential advantage of the cart 100 maintaining the center of gravity 118 which intersects with the chassis 110 is in that the load carrier 102 is maintained balanced by the support 104 during and after positioning of the cart 100 at an open state from a closed state and/or another open state. In some embodiments, the line of gravity 118 of the cart 100 is shiftable during the adjustment of the cart 100 from one state to another.

Retraction of the Support

[0085] Reference is made to Figs. 3A, 3B, 3C, 3D, 3E, 3F, 3G, 3H, 31, 3J, and 3K, which are side view illustrations of an exemplary embodiments of a cart during retraction of a support of the cart, in accordance with some embodiments of the present invention.

[0086] In some embodiments, the support 104/204 is retractable to a closed state of the cart such as depicted by Fig. ID and Fig. 3K.

[0087] In some embodiments, and as described in greater detail elsewhere herein, the cart 100 is self-adjusting. In some embodiments, the cart 100 comprises one or more motors coupled to one or more of the legs 122, chassis joint 114, first portion 106, second portion 108, load carrier 102, handles 124, upper joint 112, and/or other portions of the cart 100. In some embodiments, the motors shift the position of any one or more of the legs 122, chassis joint 114, first portion 106, second portion 108, load carrier 102, handles 124, upper joint 112, and/or other portions of the cart 100 during the retraction of the support 104.

[0088] Figs. 3A-3K show a sequence of an exemplary sequence of adjustments of the cart 100 position from an open state to a closed state. Fig. 3A shows the cart 100 at an open state wherein the support 104 holds the load carrier 102. In some embodiments, such as depicted by Fig. 3C-3D, the cart 100 positions the load carrier 102 onto a platform prior to the retraction of the support 104. In some embodiments, once the load carrier 102 is positioned onto a platform, the support 104 is adjusted such that the cart 100 is in a closed state.

[0089] For example, in the exemplary illustrations in Figs. 3E-3K, the line of gravity 118 of the cart 100 is shifted towards the load carrier 102. In some embodiments, the weight of the cart 100 is shifted from the chassis 110 to the load carrier 102. [0090] In some embodiments, such as depicted by Figs. 3F and 3G, the legs 122 each rotate about the chassis joint 114. In some embodiments, at a closed or-semi-closed state of the cart 100, the legs 122 are positioned parallel to the first portion 106. In some embodiments, such as depicted by Fig. 31, the first portion 106 rotates about the upper joint 112. In some embodiments, at a closed or-semi-closed state of the cart 100, the first portion 106 is positioned parallel to the second portion 108.

[0091] In some embodiments, at a closed or semi -closed state of the cart 100, such as depicted by Figs. 3J-3K, the load carrier 102 and/or handle 124 accommodate one or more of the leg 122, first portion 106, and second portion 108.

[0092] Reference is made to Figs. 4A, 4B, and 4C, which are side view simplified illustrations of exemplary embodiments of a cart in a closed state, according to some embodiments of the present invention. In some embodiments, the retracted support 104 comprises one or more of the legs 122 and first portion 106 positioned within the second portion 108. In some embodiments, at a closed the cart 100, one or more of the legs 122 and first portion 106 are positioned at angle in relation to the second portion 108. In some embodiments, at a closed or semi-closed state of the cart 100, one or more of the legs 122 and first portion 106 are set around a portion of the load carrier 102.

[0093] In some embodiments, such as depicted by Figs. 4A, 4B, and 4C, the support 104 supports at least a portion of the weight of the cart 100 at a closed state. In some embodiments, the closed state of the cart comprises sliding a portion of the support over the load carrier 102. In some embodiments, the closed state of the cart 100 comprises sliding a portion of the support 104 past the load carrier 102 such that at least a portion of the support 104 is positioned on either side of the load carrier 102.

[0094] A potential advantage of having a portion of the support 104 angled in relation to the second portion 108 at a closed state of the cart 100 is in that the spatial location and/or orientation of the load carrierl02 is then fixed at the location onto which it was set.

[0095] A potential advantage of having a portion of the support 104 angled in relation to the second portion 108 at a closed state of the cart 100 is in that the support 104 creates a barrier between the load carrier 102 and the surrounding environment. Method

[0096] Reference is made to Fig. 5A, which is a flow chart illustrating a method of retracting a cart from an open state to a closed state, in accordance with some embodiments of the present invention.

[0097] In some embodiments, the method comprises at 502 placing a load carrier 102 onto a surface (e.g., surface 202 depicted by Figs. 3A-3K). In some embodiments, the method comprises at 504 adjusting adjustable portions of the cart support system in respect to each other and at 506 lifting the chassis 110 towards the first portion 106. In some embodiments, the method comprises at 508 positioning the chassis 110 and one or more adjustable portions (e.g., first portion 106) adjacent to the load carrier. In some embodiments, the method further includes positioning the chassis 110 and one or more adjustable portions (e.g., first portion 106) adjacent to the second portion 108.

[0098] In some embodiments, the method comprises retracting the length of the first and/or second portion 106/108. In some embodiments, the method comprises rotating the chassis 110 towards the first portion 106. In some embodiments, the method comprises sliding the chassis 110 onto the first portion 106. In some embodiments, the method comprises sliding the first portion 106 onto the second portion 108. In some embodiments, the method comprises aligning the first portion 160 with the second portion 108.

[0099] In some embodiments, the method comprises shifting the weight of the cart 100 from the chassis 110 to the load carrier 102. In some embodiments, the method comprises retracting the support 104. In some embodiments, the method comprises one or more of folding, sliding, and rotating one or more legs 122 to a position parallel to the first portion 106. In some embodiments, the method comprises rotating one or more legs 122 about chassis joint 114. In some embodiments, the method comprises sliding one or more legs 122 onto the first portion 106 and/or projection 126.

[00100] In some embodiments, the method comprises rotating the first portion 106 about the upper joint 112. In some embodiments, the method comprises sliding the first portion 106 along the length of a portion of the second portion 108. In some embodiments, the method comprising retracting the length of one or more of the first portion 106, the second portion 108, and/or the leg 122. [00101] In some embodiments, the method comprises sliding the second portion 108 within the handles 124 of the load carrier 102.

[00102] Reference is made to Fig. 5B, which is a flow chart illustrating a method of opening a cart from a closed state to an open state, in accordance with some embodiments of the present invention.

[00103] In some embodiments, the method comprises opening a portion of the cart 100 positioned in a closed state onto a surface, by, at 510 adjusting adjustable portions of the cart support system in respect to the chassis and at 512 in respect to each other. In some embodiments, the adjusting at 510 comprises e.g., extending the first portion 106 away from the second portion 108. In some embodiments, the method comprises extending one or more portions of the cart support system at 514 and at 516, in some embodiments, the method comprises positioning the chassis 110 onto a platform. In some embodiments, at 518 the method comprises lifting the load carrier 102 from the surface.

[00104] In some embodiments, the method comprises extending the length of the first and/or second portion 106/108. In some embodiments, the method comprises sliding the first portion 106 away from the second portion 108. In some embodiments, the method comprises rotating the first portion 106 away from the second portion 108 such that the chassis 110 is positioned between the second portion 108 and a platform onto which the cart 100 is being opened. In some embodiments, the method comprises sliding and/or rotating the chassis 110 away from the first portion 106.

[00105] In some embodiments, the method comprises sliding the first portion 106 along the second portion 108. In some embodiments, the method comprises extending the length of one or more of the first portion 106 and/or the second portion 108. In some embodiments, the method comprises rotating the second portion 108 about the upper joint 112. In some embodiments, the method comprises unfolding the second portion 108 from the first portion 106.

[00106] In some embodiments, the method comprises sliding the legs 122 away from the first portion 106. In some embodiments, the method comprises rotating the leg 122 about the chassis joint 114. Self-Adjusting System

[00107] Reference is made to Fig. 6, which is a simplified illustration of a system of a self- adjusting cart, in accordance with some embodiments of the present invention. In some embodiments, there is provided a system of a self-adjusting cart. In some embodiments, the system 600 comprises a cart 100 and at least one motor 608 coupled to the cart 100. In some embodiments, the system 600 comprises a control unit 602. In some embodiments, the system 600 comprises one or more sensors 604 configured to send data to the control unit 602. In some embodiments, the system 600 comprises a user interface module 606 coupled to the cart 100 and/or the control unit 602.

[00108] In some embodiments, the sensor 604, user interface module 606, and/or motor 608 are coupled to the control unit 602 via one or more of cable, Bluetooth, Wi-Fi, and the like.

[00109] In some embodiments, the control unit 602 receives data from the one or more sensors. In some embodiments, the control unit 602 controls the one or more motors 608. In some embodiments, the one or more motors 608 are coupled to at least a portion of the support 104. In some embodiments, the one or more motors 608 are coupled to any one or more of the first portion 106, second portion 108, chassis joint 114, upper joint 112, chassis 110, legs 122, load carrier 102, frame 130, rail 132, wheels 116, projection 126 and handles 124.

[00110] In some embodiments, the control unit controls the position of the support 104 and/or load carrier 102 via one or more motors 608. In some embodiments, the control unit adjusts the load carrier 102 and/or the support 104 via one or more motors 608. In some embodiments, the control unit 602 maintains the cart 100 balanced such that the spatial location and/or orientation of the load carrier 102 is maintained fixed.

[00111] In some embodiments, the motor 608 drives the wheels 116. In some embodiments, the control unit controls the transportation of the cart 100 by one or more of controlling the speed of travel and/or the location to which the wheels are driven by the motor 608.

[00112] In some embodiments, the system comprises one or more sensors 604 such as, for example, pressure sensor, load carrier sensor, strain gauge, line of gravity sensor, proximity sensor, Global Positioning System, optical sensor, and the like. In some embodiments, the one or more sensor 604 is coupled to any one or more of the first portion 106, second portion 108, chassis joint 114, upper joint 112, chassis 110, legs 122, load carrier 102, frame 130, rail 132, projection 126 and handles 124.

[00113] In some embodiments, the user interface module 606 sends data to the control unit 602 comprising parameters inputted by a user, for example, the speed of travel of the cart 100, the height of the platform onto which the cart 100 is positioned in a closed state, the distance of the platform onto which an open cart 100 is adjusted onto to a closed state, and the desired state, spatial location and/or orientation of the load carrier 102.

Load carrier Embodiments

[00114] Reference is made to Fig. 7A, 7B, and 7C are side view simplified illustrations of exemplary embodiments of a cart, in accordance with some embodiments of the present invention.

[00115] In some embodiments, such as depicted by Figs. 7A the cart 700 comprises a plurality of load carriers 702 positioned along the second portion 108. In some embodiments, the load carriers 702 are slidable along the support 104 and/or second portion 108. In some embodiments, the distances between two consecutive load carriers 702 are adjustable. In some embodiments, a one or more load carriers 702 are removable.

[00116] A potential advantage of the cart 700 having a plurality of load carriers 702 which are moveable along the second portion 108 is in that the weight distribution of the load carriers 702 can be manipulated such that the cart 700 is maintained balanced. In some embodiments, the positions of the load carriers 702 (i.e. distance between the load carriers 702, position of the load carriers 702 along the second portion 108) are adjusted from one open state of the cart 700 to another open state.

[00117] In some embodiments, such as depicted by Fig. 7B, the cart 750 comprises a plurality of load carriers 704 which are moveable along the support 104 such that the one load carrier is positioned partially or directly above a second load carrier 704. In some embodiments, the load carriers 704 and the support 104 are coupled to each other by a handle 706. In some embodiments, the handle 706 is integral to the load carrier 704 and/or to the support 104. In some embodiments, the load carriers 704 are moveable along the support 104.

[00118] A potential advantage of the load carriers 704 being moveable along the length of the support 104 is in that the cart 750 includes more compartments which increase the amount of merchandise that the cart 750 can support. In some embodiments, the cumulative dimensions of the load carriers 704 are not limited by the dimensions of the second portion 108 of the support 104.

[00119] In some embodiments, such as depicted by Fig. 7C, the cart 780 comprises one or more load carrier holders 710, such as, e.g., hooks, configured to hold one or more load carriers and/or bags. In some embodiments, the load carrier holders 710 are structured to accommodate bags such as shopping bags and plastic bags.

[00120] A potential advantage of the cart 780 comprising load carrier holders 710 instead of comprising load carriers is in that the cart 780 can accommodate many types of load carriers. Additionally, the support 104 and load carrier holder 710 of the cart 780 can retract into a closed state without load carriers.

[00121] In some embodiments, the load carrier holders comprise sensors such as, for example, strain gauges which measure the force exerted onto each load carrier holder 710. In some embodiments, the distance between each load carrier holder 710 and/or the position of the load carrier holder 710 in relation to the second portion 108 is adjustable.

[00122] Throughout this application, various embodiments of this invention may be presented in a range format. It should be understood that the description in range format is merely for convenience and brevity and should not be construed as an inflexible limitation on the scope of the invention. Accordingly, the description of a range should be considered to have specifically disclosed all the possible subranges as well as individual numerical values within that range. For example, description of a range such as from 1 to 6 should be considered to have specifically disclosed subranges such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6 etc., as well as individual numbers within that range, for example, 1, 2, 3, 4, 5, and 6. This applies regardless of the breadth of the range.

[00123] Whenever a numerical range is indicated herein, it is meant to include any cited numeral (fractional or integral) within the indicated range. The phrases “ranging/ranges between” a first indicate number and a second indicate number and “ranging/ranges from” a first indicate number “to” a second indicate number are used herein interchangeably and are meant to include the first and second indicated numbers and all the fractional and integral numerals therebetween.

[00124] In the description and claims of the application, each of the words “comprise” “include” and “have”, and forms thereof, are not necessarily limited to members in a list with which the words may be associated. In addition, where there are inconsistencies between this application and any document incorporated by reference, it is hereby intended that the present application controls.

[00125] The descriptions of the various embodiments of the present invention have been presented for purposes of illustration but are not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein was chosen to best explain the principles of the embodiments, the practical application or technical improvement over technologies found in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

WHAT IS CLAIMED IS:

1. A cart, comprising: a load carrier; and an adjustable support system comprising: a chassis; and at least one arm adjustably coupled to said load carrier at a first end and adjustably coupled to said chassis at a second end; said cart being retractable from an open extended state to a retracted closed state; and wherein said adjustable support system is configured to translate said load carrier and continuously maintain an intersection of a line of gravity of said cart with a base-of- support of said cart.

2. The cart according to claim 1 , wherein said load carrier is slidable along at least a portion of said at least one arm.

3. The cart according to any one of claims 1-2, wherein said support is adjustable from one open state to another such that when said chassis is placed onto a surface, said line of gravity of said cart continuously intersects said base-of-support of said cart throughout said adjustment.

4. The cart according to any one of claims 1-3, where said arm comprises a first portion and a second portion, wherein said first portion is adjustably coupled to said chassis at one end and to said chassis at a second end and said second portion is coupled to said load carrier.

5. The cart according to claim 4, wherein said first portion is coupled to said second portion via an upper joint such that said second portion is rotatable about said upper joint in relation to said first portion.

6. The cart according to claim 5, wherein said upper joint comprises one or more of a hinge, sliding hinge, a rail or any combination thereof.

7. The cart according to any one of claims 4-6, wherein said first portion is slidable onto said second portion.

8. The cart according to any one of claims 4-7, wherein said second portion comprises a frame configured to accommodate said first portion of said arm.

9. The cart according to any one of claims 1-7, wherein said load carrier comprises at least one handle and wherein said at least one handle is moveably coupled to said arm.

10. The cart according to claim 9, wherein said load carrier comprises at least one handle and wherein said at least one handle is slidable along at least a portion of the length of said arm.

11. The cart according to any one of claims 1-10, wherein said chassis comprises a plurality of independent legs adjustably coupled to said arm.

12. The cart according to any one of claims 1-11, wherein said chassis is coupled to said arm at a chassis joint, and said chassis joint comprises an axis of rotation such that said chassis is adjustable in relation to said arm.

13. The cart according to any one of claims 1-12, wherein the length of said arm is extendable.

14. The cart according to any one of claims 1-13, wherein a portion of said load carrier comprises a portion configured to accommodate at least a portion of said support at a closed state.

15. A cart, comprising: a load carrier; and an adjustable support system comprising at least one arm; and a chassis; said at least one arm being adjustably coupled to said load carrier at a first end and adjustably coupled to said chassis at a second end; said cart being retractable from an open extended state to a retracted closed state; said adjustable support system is configured to translate said load carrier in relation to said chassis; and wherein at a closed state, said support is retracted to fit within a portion of said load carrier.

16. The cart according to claim 15, wherein said load carrier comprises a portion configured to accommodate said support at a closed state.

17. The cart according to any one of claims 15-16, wherein said load carrier is slidable along at least a portion of said arm.

18. The cart according to any one of claims 15-17, wherein said support is adjustable from one open state to another such that when said chassis is placed onto a surface, said line of gravity of said cart continuously intersects said base-of-support of said cart throughout said adjustment.

19. The cart according to any one of claims 15-18, where said arm comprises a first portion and a second portion, wherein said first portion is adjustably coupled to said chassis at one end and to said chassis at a second end and said second portion is coupled to said load carrier.

20. The cart according to claim 19, wherein said first portion is coupled to said second portion via an upper joint such that said second portion is rotatable about said upper joint in relation to said first portion.

21. The cart according to claim 20, wherein said upper joint comprises one or more of a hinge, sliding hinge, a rail or any combination thereof.

22. The cart according to any one of claims 19-21, wherein said first portion is slidable onto said second portion.

23. The cart according to any one of claims 19-22, wherein said second portion comprises a frame configured to accommodate said first portion of said arm.

24. The cart according to any one of claims 15-23, wherein said load carrier is movably coupled to said second portion by at least one handle.

25. The cart according to claim 24, wherein said at least one handle is slidable along at least a portion of the length of said arm.

26. The cart according to any one of claims 15-25, wherein said chassis comprises a plurality of independent legs adjustably coupled to said arm.

27. The cart according to any one of claims 15-26, wherein said chassis is coupled to said arm at a chassis joint, and said chassis joint comprises an axis of rotation such that said chassis is adjustable in relation to said arm.

28. The cart according to any one of claims 15-27, wherein the length of said arm is extendable.

29. A method for adjusting a cart from an open state to a closed state, comprising: placing load carrier of a cart on a surface, said cart comprising a cart adjustable support system having at least a first and a second portions and a chassis; adjusting the adjustable portions in respect to each other; and lifting said chassis towards said first portion; and positioning at least one of said first portion, said second portion and said chassis adjacent to said load carrier.

30. The method according to claim 29, comprising retracting the length of the first and/or second portion.

31. The method according to any one of claims 29-30, comprising rotating said chassis towards said first portion.

32. The method according to any one of claims 29-31, comprising sliding said chassis onto said first portion.

33. The method according to any one of claims 29-32, comprising sliding said first portion onto said second portion.

34. The method according to any one of claims 29-33, comprising aligning said first portion with said second portion.

35. A method for adjusting a cart from a closed state to an open state, comprising: opening a portion of a cart being in a closed state and comprising: a load carrier placed on a surface; and an adjustable support system comprising at least one of a first portion and a second portions; and a chassis; adjusting said at least one portion at a first end to said chassis; adjusting said at least one portion at a second end to said load carrier; extending said first portion and/or said second portion; and positioning said chassis onto a platform; and lifting said load carrier from said surface.

36. The method according to claim 35, comprising extending the length of the first and/or second portion.

37. The method according to any one of claims 35-36, comprising sliding said first portion away from said second portion.

38. The method according to any one of claims 35-37, comprising rotating the first portion away from the second portion such that said chassis is positioned between said second state and said platform.

39. The method according to any one of claims 35-38, comprising sliding and/or rotating said chassis away from said first portion.

40. A system for a self-adjusting cart, comprising: a cart, comprising: a load carrier; and an adjustable support system comprising at least one arm; and a chassis; said at least one arm being adjustably coupled to said load carrier at a first end and adjustably coupled to said chassis at a second end; said cart being retractable from an open extended state to a retracted closed state; wherein said adjustable support system is configured to translate said load carrier; at least one motor coupled to said support; and a control unit coupled to said motor; wherein said control unit controls the adjustment of said support via said motor to maintain the line of gravity of the cart intersecting with the base-of-support of said cart.

41. The system according to claim 40, wherein said system comprises one or more of a strain gauge, proximity sensor, optical sensor, pressure sensor and a Global Positioning System.

42. The system according to any one of claims 40-41, wherein said one or more motor is coupled to at least one of the first portion, second portion, chassis, and load carrier.