US3782141A - Flush type door latch - Google Patents

Flush type door latch Download PDF

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Publication number
US3782141A
US3782141A US00301079A US3782141DA US3782141A US 3782141 A US3782141 A US 3782141A US 00301079 A US00301079 A US 00301079A US 3782141D A US3782141D A US 3782141DA US 3782141 A US3782141 A US 3782141A
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United States
Prior art keywords
plate portion
eject
latching
latching member
slot
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US00301079A
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R Doerrfeld
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AL Hansen Manufacturing Co
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AL Hansen Manufacturing Co
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Assigned to AMERICAN NATIONAL BANK AND TRUST COMPANY OF CHICAGO, AN IL CORP. reassignment AMERICAN NATIONAL BANK AND TRUST COMPANY OF CHICAGO, AN IL CORP. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: A.L. Hansen Manufacturing Company
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    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C1/00—Fastening devices with bolts moving rectilinearly
    • E05C1/08—Fastening devices with bolts moving rectilinearly with latching action
    • E05C1/12—Fastening devices with bolts moving rectilinearly with latching action with operating handle or equivalent member moving otherwise than rigidly with the latch
    • E05C1/14—Fastening devices with bolts moving rectilinearly with latching action with operating handle or equivalent member moving otherwise than rigidly with the latch the handle or member moving essentially towards or away from the plane of the wing or frame
    • E05C1/145—Fastening devices with bolts moving rectilinearly with latching action with operating handle or equivalent member moving otherwise than rigidly with the latch the handle or member moving essentially towards or away from the plane of the wing or frame flush
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S292/00—Closure fasteners
    • Y10S292/31—Lever operator, flush
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00—Closure fasteners
    • Y10T292/08—Bolts
    • Y10T292/096—Sliding
    • Y10T292/0969—Spring projected
    • Y10T292/097—Operating means
    • Y10T292/0994—Lever
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/50—Special application
    • Y10T70/5093—For closures
    • Y10T70/5155—Door
    • Y10T70/5199—Swinging door
    • Y10T70/5372—Locking latch bolts, biased
    • Y10T70/5385—Spring projected
    • Y10T70/5389—Manually operable
    • Y10T70/5394—Directly acting dog for exterior, manual, bolt manipulator
    • Y10T70/5465—Manual dog-controller
    • Y10T70/5482—Slidable only
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/50—Special application
    • Y10T70/5611—For control and machine elements
    • Y10T70/5757—Handle, handwheel or knob
    • Y10T70/5761—Retractable or flush handle

Definitions

  • ABSTRACT A door latch embodying the principles of this invention is designed to be assembled in a conventional pan-shaped housing having a shallow depth and having a slot provided in the back wall.
  • a guide member is supported on the outside surface of the back wall and open to the slot to slidably receive a lock bolt therein.
  • a compression spring biases the bolt outwardly into the projected latching position.
  • a latching member having a plate portion of a shape conforming to the outer dimensions of the open front face of the door latch housing is pivotally mounted between theopposite side walls of the housing and has a lever portion which projects through the back wall slot and into a recess formed in the lock bolt for retracting the lock bolt against the force of the compression spring.
  • Cited eject member is also pivotally supported between the UNITED STATES PATENTS side wall housings and includes a push button member 3 576 H8 4H9 Docrrfeld 70 which projects through an opening provided in the H1966 l3 latching member plate portion.
  • the eject member also 2:873:495 2H959 Love I I 24/68 includes a nose portion which engages the under sur- 2,653,842 9/1953 Love 292/256 face of the Plate Portion latching member i its outer free end such that upon an inward force applied FOREIGN PATENTS OR APPLICATIONS to the push button member causes the nose portion to 6,80l,l l9 8/1968 Netherlands 70/208 swing outwardly and force the free end of the latching member away from the housing a sufficient distance to Primary ExammerAlbert G. Craig, Jr. be gripped by the user. Attorney-John A. Dienner et al.
  • the present invention relates to a flush-type door latch adapted for use on the doors of vehicles such as recreational and commercial trailers.
  • Conventional flush-type door latches comprise a housing, a slidable lock bolt and an operating handle for retracting the lock bolt.
  • One of the design objectives in this type of door latch is to have no exposed edges to prevent the handles from being pryed open and to prevent protruding surfaces for safety purposes.
  • This invention overcomes the above mentioned shortcoming by providing an operating handle having substantially twice the effective lever action as disclosed in my prior patent and yet meeting the other design objectives of completely covering the front of the housing to present no exposed or protruding edges subject to prying or other tampering.
  • the flush-type door latch of the present invention is designed to be packaged in a conventional pan-shaped housing in which a guide member is supported on the back wall thereof for slidably receiving a lock bolt.
  • a latching member having a plate portion conforming to the shape of the outer dimensions of the housings open front face is pivotally supported at one end and has a lever portion adjacent this pivoted end which projects through a slot in the pan-shaped housing and into a recess in the lock bolt for retracting the lock bolt against the force of a spring, which urges the lock bolt into a projected latching position.
  • An eject means is provided for selectively moving the free end of the plate portion of the latching member away from the open front face a sufficient distance to permit gripping of the free end.
  • This eject means includes a button member disposed through an opening in the plate portion which is operatively connected to the latching member for effecting the outward movement of the plate portion in response to an inward pushing force by the user.
  • FIG. 1 is a partial front view of a door in which the door latch of the present invention is mounted and of a door jam adjoining the edge of the door;
  • FIG. 2 is a sectional view taken along the line 2-2 of FIG. 1 with the parts being shown in a locked position;
  • FIG. 3 is a sectional view corresponding generally to FIG. 2 with the parts being shown in an operating'position and with the lock device removed for clarity;
  • FIG. 4 is a front perspective view of a latching member used in the embodiment of my invention.
  • FIG. 5 is a front perspective view of an eject means used in the embodiment of my invention.
  • FIG. 6 is a front perspective view of a lock bolt and associated guide member used in the embodiment of my invention.
  • FIG. 7 is a front perspective view of a lock device used in the embodiment of my invention.
  • a flush-type door latch embodying the principles of my invention.
  • the door latch is adapted to be mounted in a recess 12 formed at the edge of a door 14 associated with a side doorjam 16. Since the door 14 and doorjam 16 do not form part of this invention, only fragmentary portions thereof are shown in the drawings.
  • the door jam 16 is provided with a keeper plate 17 and keeper notch 18 which are arranged in a conventional manner for cooperation with a lock bolt.
  • the door latch 10 as shown in FIGS. 1-3, comprises a pan-shaped metal housing 20 having a back wall 22 with a slot 24 and flat section 26, opposed sidewalls 28, opposed end walls 30, and a peripheral flange 32 set flush with the front face of the door 14.
  • the walls of the housing 20 define a recessed area 34.
  • This channel member 36 has a closed end 38 and side flanges 40 secured, as by welding, to the back wall 22.
  • Lock bolt 42 Slidably mounted in channel member 36 is a lock bolt 42 having a square elongated shape.
  • Lock bolt 42 includes an outer head portion 44 presenting an inclined cam surface 46, and a rear cutout 48.
  • Bolt 42 is biased outwardly of the channel member 36 by a compression spring 50 disposed between the channel member end 38 and rear cutout 48.
  • a paddle handle or latching member 54 (FIG. 4) is provided to control and retract the lock bolt 42.
  • latching member 54 has an elongated plate portion 56 having a concave arcuate portion 58 at one end and inwardly directed side flanges 60 interconnected by end flange 62.
  • Plate portion 56 extends substantially the entire length and width of recess 34, and is pivotally mounted adjacent one end by a pivot pin 64 which projects through aligned apertures in the side flanges 60 and housing sidewalls 28 adjacent one end of housing 20.
  • Latching member 54 further includes a narrow lever portion 66 projecting inwardly from end flange 62 at the pivotally connected end of latching member 54.
  • the lever portion 66 extends through back wall slot 24 and projects into recess 68 formed along the intermediate portion of lock bolt 42.
  • Lever portion 66 is engageable with the left hand edge of back wall slot 24 to prevent swinging or pivoting of the latching member 54 inwardly beyond the flush-line defined by housing flange 32 and to limit the outward axial movement of lock bolt 42.
  • latching member extends the entire length of housing recess 34 and is pivotally mounted adjacent one end, it provides the greatest possible leverage advantage, which is a substantial improvement over prior art flush-type door locks that employ paddle handle having a length substantially shorter than their associated housing recess.
  • latching member 54 is designed to be flush with its housing, in the retracted or locked position, it is necessary to provide additional means to expose arcuate portion 58 at the free end of latching member 54 a sufficient amount to permit gripping it.
  • Such means is provided by an eject member '70 (FIG. Eject member 70 has a generally rectangular web portion 72 with a central rectangular raised section 74 and a pair of downwardly extending side flanges 76.
  • Eject member 70 is pivotally suppoted by a second pivot pin 78 which extends across access area 34 in a generally parallel direction to the first pivot pin 64 and extends through apertures 80 in side flanges 76 and aligned apertures 82 in housing side walls 28.
  • the location of second pivot pin 78 is selected so that the rectangular raised section '74 in web portion '72 is disposed to rest in a rectangular opening 84 of conforming dimensions which is provided in the plate portion 56 of latching member 54 intermediate its ends.
  • Side flanges 76 are each provided with a nose portion 86 that extends forwardly of theweb portion 72 a sufficient distance to engage arcuate portion 58 oflatching member 54.
  • the engaging surface 88 of nose portion 86 is stepped from web portion 72 a distance equal to the depth of arcuate portion 58 to permit the raised section 74 to be flush with the plate portion 56 of latching member 54.
  • the rear ends 90 of side flanges '76 are inwardly slanted to free the eject member to swing to the position of FIG. 3 without interference between the side flanges 76 and the back wall 22.
  • locking member 100 Cooperatively associated with the latching member 54 and eject member 70 is locking member 100, which comprises a key-actuated locking device 102 (FIG. 7) mounted through opening 104 of plate portion 56 of latching member 54.
  • Key-actuated locking device 102 comprises a lock cylinder 106 having a key slot 108 and a rotatable lock arm 110.
  • Lock arm 110 has an intermediate offset supporting section 112 and an outer end 114, and is rotatable by turning a key in lock cylinder 106 between two angular orientations. When turned to the position shown in FIG. 2, the offset supporting section 112 interlocks latching member 54 and eject member 70 to prevent any movement of either the latching member or eject member 70.
  • the key-actuated locking device 102 In operation, the key-actuated locking device 102 must be first set so that the lock arm 110 is turned to the angular orientation 90 degrees from that shown in FIG. 2 in order that the latching member 54 and eject member 70 are free to operate. To obtain a gripping hold on the latching member 54, it is first necessary to push inwardly on the raised central portion 74 of eject member 70 which acts as a push button member.
  • This inward force causes the eject member 70 to pivot clockwise (as viewed in FIG. 2) about pivot pin 78, and the outward movement of its nose portion 76 pushes against the concave portion 58 oflatching member 54 to raise the latching members outer end portion above the flush line of the housing to the dotted line position of FIG. 3.
  • the outer end of the latching member 54 is then exposed for the operator to grip it and pull it to the full line position of FIG. 3, and thereby cause the lock bolt 42 to retract to the position of FIG. 3.
  • the compression spring 50 extends the latching member 42 to its lock position and simultaneously turns latching member 54 counterclockwise to its closed locked position. As the latching member 54 swings inwardly, it engages the eject member and swings it likewise counterclockwise to its closed position of FIG. 2.
  • a door latch having a housing with back and side walls presenting an open front face, said back wall having a slot therein, a guide member supported on the outside surface of said back wall and open to said slot, a bolt slidable in said guide member, spring means biasing said bolt into a projected latching position
  • a latching member having a plate portion ofa shape conforming to the outer dimensions of said open front face to fit therein and having a lever portion with one end projecting through said slot for retracting said bolt against the force of said spring means, first pivot means for rotatably supporting said latching member adjacent one end of said plate portion, and eject means for moving the opposite end of said plate portion to said one end outwardly of said open front face a sufficient distance to permit gripping therewith, said eject means including a button member disposed through an opening in said plate portion and operatively connected to said latching member to effect said outward movement of said plate portion in response to an inward pushing force.
  • said eject means comprises an eject member having a web portion and two side flanges and second pivot means, said second pivot means rotatably supporting said side flanges to turn about an axis parallel to the axis of said first pivot means, said side flanges having a forward nose portion in engagement with said opposite end of said plate portion, and wherein said button member comprises a central raised section on said web portion.
  • said lock means comprises a key-actuated device having a lock cylinder mounted through an aperture in said plate portion adjacent said eject means and having a locking arm rotatable between two angular orientations wherein one of said angular orientations said locking arm interlocks said latching member and said eject means to prevent any movement of either said latching member or said button member.
  • a door latch having a generally rectangular housing with back and side walls presenting an open rectangular front face, said back wall having a slot therein, a guide member supported on the outside surface of said back wall and open to said slot, a bolt slidable in said guide member, spring means biasing said bolt into a projected latching position
  • a latching member having a generally rectangular plate portion slightly smaller than the outer dimensions of said open front face with side flanges extending from its lateral edges and having a lever portion with one end projecting through said slot for retracting said bolt against the force of said spring means, first pivot pin extending between said housing side walls and through aligned openings in said side flanges adjacent one end of said plate portion, an eject member having a web portion and two side flanges, and second pivot pin extending between said housing side walls parallel to said first pivot pin and through aligned apertures in said eject member side flanges, said web portion having a raised central section extending into an opening in said plate portion, and said

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  • Mechanical Engineering (AREA)
  • Lock And Its Accessories (AREA)

Abstract

A door latch embodying the principles of this invention is designed to be assembled in a conventional pan-shaped housing having a shallow depth and having a slot provided in the back wall. A guide member is supported on the outside surface of the back wall and open to the slot to slidably receive a lock bolt therein. A compression spring biases the bolt outwardly into the projected latching position. A latching member having a plate portion of a shape conforming to the outer dimensions of the open front face of the door latch housing is pivotally mounted between the opposite side walls of the housing and has a lever portion which projects through the back wall slot and into a recess formed in the lock bolt for retracting the lock bolt against the force of the compression spring. An eject member is also pivotally supported between the side wall housings and includes a push button member which projects through an opening provided in the latching member plate portion. The eject member also includes a nose portion which engages the under surface of the plate portion latching member adjacent its outer free end such that upon an inward force applied to the push button member causes the nose portion to swing outwardly and force the free end of the latching member away from the housing a sufficient distance to be gripped by the user.

Description

United States Patent [191 Doerrfeld Jan. 1,1974- FLUSH TYPE DOOR LATCH Robert E. Doerrfeld, Lake Forest, Ill.
[73] Assignee: A. L. Hansen Manufacturing Company, Gurnee, Ill.
22 Filed: Oct. 26, 1972 211 Appl. No.: 301,079
[75] Inventor:
292/DIG. 31, 173
[57] ABSTRACT A door latch embodying the principles of this invention is designed to be assembled in a conventional pan-shaped housing having a shallow depth and having a slot provided in the back wall. A guide member is supported on the outside surface of the back wall and open to the slot to slidably receive a lock bolt therein. A compression spring biases the bolt outwardly into the projected latching position. A latching member having a plate portion of a shape conforming to the outer dimensions of the open front face of the door latch housing is pivotally mounted between theopposite side walls of the housing and has a lever portion which projects through the back wall slot and into a recess formed in the lock bolt for retracting the lock bolt against the force of the compression spring. An
[56] References Cited eject member is also pivotally supported between the UNITED STATES PATENTS side wall housings and includes a push button member 3 576 H8 4H9 Docrrfeld 70 which projects through an opening provided in the H1966 l3 latching member plate portion. The eject member also 2:873:495 2H959 Love I I 24/68 includes a nose portion which engages the under sur- 2,653,842 9/1953 Love 292/256 face of the Plate Portion latching member i its outer free end such that upon an inward force applied FOREIGN PATENTS OR APPLICATIONS to the push button member causes the nose portion to 6,80l,l l9 8/1968 Netherlands 70/208 swing outwardly and force the free end of the latching member away from the housing a sufficient distance to Primary ExammerAlbert G. Craig, Jr. be gripped by the user. Attorney-John A. Dienner et al.
7 Claims, 7 Drawing Figures 414 66 8 J6 RI\ j L a A .11,
\\j\{ I l I J4! 62 6 1041 Jam 75 I l 76 5 1 41 FLUSH TYPE noon LATCH BACKGROUND OF THE INVENTION The present invention relates to a flush-type door latch adapted for use on the doors of vehicles such as recreational and commercial trailers.
Conventional flush-type door latches comprise a housing, a slidable lock bolt and an operating handle for retracting the lock bolt. One of the design objectives in this type of door latch is to have no exposed edges to prevent the handles from being pryed open and to prevent protruding surfaces for safety purposes.
There is disclosed in my U.S. Pat. No. 3,576,118 a very satisfactory design for a flush-type door latch meeting the above mentioned criteria. However, this design has one shortcoming which is particularly a disadvantage for recreational vehicles that are used by all members of a family. This shortcoming is that the operating handle has a rather short effective length requiring a considerable outward pull force by the operator to effect the unlatching operation.
This invention overcomes the above mentioned shortcoming by providing an operating handle having substantially twice the effective lever action as disclosed in my prior patent and yet meeting the other design objectives of completely covering the front of the housing to present no exposed or protruding edges subject to prying or other tampering.
SUMMARY OF THE INVENTION The flush-type door latch of the present invention is designed to be packaged in a conventional pan-shaped housing in which a guide member is supported on the back wall thereof for slidably receiving a lock bolt. A latching member having a plate portion conforming to the shape of the outer dimensions of the housings open front face is pivotally supported at one end and has a lever portion adjacent this pivoted end which projects through a slot in the pan-shaped housing and into a recess in the lock bolt for retracting the lock bolt against the force of a spring, which urges the lock bolt into a projected latching position. An eject means is provided for selectively moving the free end of the plate portion of the latching member away from the open front face a sufficient distance to permit gripping of the free end. This eject means includes a button member disposed through an opening in the plate portion which is operatively connected to the latching member for effecting the outward movement of the plate portion in response to an inward pushing force by the user.
DESCRIPTION OF DRAWINGS For a better understanding of this invention, reference may be made to the accompanying drawings, in which:
FIG. 1 is a partial front view of a door in which the door latch of the present invention is mounted and of a door jam adjoining the edge of the door;
FIG. 2 is a sectional view taken along the line 2-2 of FIG. 1 with the parts being shown in a locked position;
FIG. 3 is a sectional view corresponding generally to FIG. 2 with the parts being shown in an operating'position and with the lock device removed for clarity;
FIG. 4 is a front perspective view of a latching member used in the embodiment of my invention;
FIG. 5 is a front perspective view of an eject means used in the embodiment of my invention;
FIG. 6 is a front perspective view of a lock bolt and associated guide member used in the embodiment of my invention; and
FIG. 7 is a front perspective view of a lock device used in the embodiment of my invention.
DESCRIPTION OF PREFERRED EMBODIMENT Referring now to the drawings, there is indicated generally by the reference numeral 10 a flush-type door latch embodying the principles of my invention. The door latch is adapted to be mounted in a recess 12 formed at the edge of a door 14 associated with a side doorjam 16. Since the door 14 and doorjam 16 do not form part of this invention, only fragmentary portions thereof are shown in the drawings. The door jam 16 is provided with a keeper plate 17 and keeper notch 18 which are arranged in a conventional manner for cooperation with a lock bolt.
The door latch 10, as shown in FIGS. 1-3, comprises a pan-shaped metal housing 20 having a back wall 22 with a slot 24 and flat section 26, opposed sidewalls 28, opposed end walls 30, and a peripheral flange 32 set flush with the front face of the door 14. The walls of the housing 20 define a recessed area 34. Extending along the exterior of the back wall 22, and overlying slot 24, is a generally U-shaped metal channel guide member 36 (FIG. 6). This channel member 36 has a closed end 38 and side flanges 40 secured, as by welding, to the back wall 22.
Slidably mounted in channel member 36 is a lock bolt 42 having a square elongated shape. Lock bolt 42 includes an outer head portion 44 presenting an inclined cam surface 46, and a rear cutout 48. Bolt 42 is biased outwardly of the channel member 36 by a compression spring 50 disposed between the channel member end 38 and rear cutout 48.
To control and retract the lock bolt 42, a paddle handle or latching member 54 (FIG. 4) is provided. As shown in FIGS. 2-4, latching member 54 has an elongated plate portion 56 having a concave arcuate portion 58 at one end and inwardly directed side flanges 60 interconnected by end flange 62. Plate portion 56 extends substantially the entire length and width of recess 34, and is pivotally mounted adjacent one end by a pivot pin 64 which projects through aligned apertures in the side flanges 60 and housing sidewalls 28 adjacent one end of housing 20. Latching member 54 further includes a narrow lever portion 66 projecting inwardly from end flange 62 at the pivotally connected end of latching member 54. The lever portion 66 extends through back wall slot 24 and projects into recess 68 formed along the intermediate portion of lock bolt 42. Lever portion 66 is engageable with the left hand edge of back wall slot 24 to prevent swinging or pivoting of the latching member 54 inwardly beyond the flush-line defined by housing flange 32 and to limit the outward axial movement of lock bolt 42.
By virtue of the fact that latching member extends the entire length of housing recess 34 and is pivotally mounted adjacent one end, it provides the greatest possible leverage advantage, which is a substantial improvement over prior art flush-type door locks that employ paddle handle having a length substantially shorter than their associated housing recess.
Because latching member 54 is designed to be flush with its housing, in the retracted or locked position, it is necessary to provide additional means to expose arcuate portion 58 at the free end of latching member 54 a sufficient amount to permit gripping it. Such means is provided by an eject member '70 (FIG. Eject member 70 has a generally rectangular web portion 72 with a central rectangular raised section 74 and a pair of downwardly extending side flanges 76.
Eject member 70 is pivotally suppoted by a second pivot pin 78 which extends across access area 34 in a generally parallel direction to the first pivot pin 64 and extends through apertures 80 in side flanges 76 and aligned apertures 82 in housing side walls 28. The location of second pivot pin 78 is selected so that the rectangular raised section '74 in web portion '72 is disposed to rest in a rectangular opening 84 of conforming dimensions which is provided in the plate portion 56 of latching member 54 intermediate its ends. Side flanges 76 are each provided with a nose portion 86 that extends forwardly of theweb portion 72 a sufficient distance to engage arcuate portion 58 oflatching member 54. The engaging surface 88 of nose portion 86 is stepped from web portion 72 a distance equal to the depth of arcuate portion 58 to permit the raised section 74 to be flush with the plate portion 56 of latching member 54. The rear ends 90 of side flanges '76 are inwardly slanted to free the eject member to swing to the position of FIG. 3 without interference between the side flanges 76 and the back wall 22.
Cooperatively associated with the latching member 54 and eject member 70 is locking member 100, which comprises a key-actuated locking device 102 (FIG. 7) mounted through opening 104 of plate portion 56 of latching member 54. Key-actuated locking device 102 comprises a lock cylinder 106 having a key slot 108 and a rotatable lock arm 110. Lock arm 110 has an intermediate offset supporting section 112 and an outer end 114, and is rotatable by turning a key in lock cylinder 106 between two angular orientations. When turned to the position shown in FIG. 2, the offset supporting section 112 interlocks latching member 54 and eject member 70 to prevent any movement of either the latching member or eject member 70.
In operation, the key-actuated locking device 102 must be first set so that the lock arm 110 is turned to the angular orientation 90 degrees from that shown in FIG. 2 in order that the latching member 54 and eject member 70 are free to operate. To obtain a gripping hold on the latching member 54, it is first necessary to push inwardly on the raised central portion 74 of eject member 70 which acts as a push button member.
This inward force causes the eject member 70 to pivot clockwise (as viewed in FIG. 2) about pivot pin 78, and the outward movement of its nose portion 76 pushes against the concave portion 58 oflatching member 54 to raise the latching members outer end portion above the flush line of the housing to the dotted line position of FIG. 3. The outer end of the latching member 54 is then exposed for the operator to grip it and pull it to the full line position of FIG. 3, and thereby cause the lock bolt 42 to retract to the position of FIG. 3. Upon release of the latching member 54, the compression spring 50 extends the latching member 42 to its lock position and simultaneously turns latching member 54 counterclockwise to its closed locked position. As the latching member 54 swings inwardly, it engages the eject member and swings it likewise counterclockwise to its closed position of FIG. 2.
I claim:
1. In a door latch having a housing with back and side walls presenting an open front face, said back wall having a slot therein, a guide member supported on the outside surface of said back wall and open to said slot, a bolt slidable in said guide member, spring means biasing said bolt into a projected latching position, an improvement comprising a latching member having a plate portion ofa shape conforming to the outer dimensions of said open front face to fit therein and having a lever portion with one end projecting through said slot for retracting said bolt against the force of said spring means, first pivot means for rotatably supporting said latching member adjacent one end of said plate portion, and eject means for moving the opposite end of said plate portion to said one end outwardly of said open front face a sufficient distance to permit gripping therewith, said eject means including a button member disposed through an opening in said plate portion and operatively connected to said latching member to effect said outward movement of said plate portion in response to an inward pushing force.
2. The combination of claim 1, wherein said eject means comprises an eject member having a web portion and two side flanges and second pivot means, said second pivot means rotatably supporting said side flanges to turn about an axis parallel to the axis of said first pivot means, said side flanges having a forward nose portion in engagement with said opposite end of said plate portion, and wherein said button member comprises a central raised section on said web portion.
3. The combination of claim 1, further comprising lock means for selectively preventing outward movement of said latching member.
4. The combination of claim 3, wherein said lock means comprises a key-actuated device having a lock cylinder mounted through an aperture in said plate portion adjacent said eject means and having a locking arm rotatable between two angular orientations wherein one of said angular orientations said locking arm interlocks said latching member and said eject means to prevent any movement of either said latching member or said button member.
5. In a door latch having a generally rectangular housing with back and side walls presenting an open rectangular front face, said back wall having a slot therein, a guide member supported on the outside surface of said back wall and open to said slot, a bolt slidable in said guide member, spring means biasing said bolt into a projected latching position, an improvement comprising a latching member having a generally rectangular plate portion slightly smaller than the outer dimensions of said open front face with side flanges extending from its lateral edges and having a lever portion with one end projecting through said slot for retracting said bolt against the force of said spring means, first pivot pin extending between said housing side walls and through aligned openings in said side flanges adjacent one end of said plate portion, an eject member having a web portion and two side flanges, and second pivot pin extending between said housing side walls parallel to said first pivot pin and through aligned apertures in said eject member side flanges, said web portion having a raised central section extending into an opening in said plate portion, and said eject member side flanges cylinder mounted through an aperture in said plate portion adjacent said eject means and having a locking arm rotatable between two angular orientations wherein one of said angular orientations said locking arm interlocks said latching member and said eject member to prevent any movement of either said latching member or said eject member.

Claims (7)

1. In a door latch having a housing with back and side walls presenting an open front face, said back wall having a slot therein, a guide member supported on the outside surface of said back wall and open to said slot, a bolt slidable in said guide member, spring means biasing said bolt into a projected latching position, an improvement comprising a latching member having a plate portion of a shape conforming to the outer dimensions of said open front face to fit therein and having a lever portion with one end projecting through said slot for retracting said bolt against the force of said spring means, first pivot means for rotatably supporting said latching member adjacent one end of said plate portion, and eject means for moving the opposite end of said plate portion to said one end outwardly of said open front face a sufficient distance to permit gripping therewith, said eject means including a button member disposed through an opening in said plate portion and operatively connected to said latching member to effect said outward movement of said plate portion in response to an inward pushing force.
2. The combination of claim 1, wherein said eject means comprises an eject member having a web portion and two side flanges and second pivot means, said second pivot means rotatably supporting said side flanges to turn about an axis parallel to the axis of said first pivot means, said side flanges having a forward nose portion in engagement with said opposite end of said plate portion, and wherein said button member comprises a central raised section on said web portion.
3. The combination of claim 1, further comprising lock means for selectively preventing outward movement of said latching member.
4. The combination of claim 3, wherein said lock means comprises a key-actuated device having a lock cylinder mounted through an aperture in said plate portion adjacent said eject means and having a locking arm rotatable between two angular orientations wherein one of said angular orientations said locking arm interlocks said latching member and said eject means to prevent any movement of either said latching member or said button member.
5. In a door latch having a generally rectangular housing with back and side walls presenting an open rectangular front face, said back wall having a slot therein, a guide member supported on the outside surface of said back wall and open to said slot, a bolt slidable in said guide member, spring means biasing said bolt into a projected latching position, an improvement comprising a latching member having a generally rectangular plate portion slightly smaller than the outer dimensions of said open front face with side flanges extending from its lateral edges and having a lever portion with one end projecting through said slot for retracting said bolt against the force of said spring means, first pivot pin extending between said housing side walls and through aligned openings in said side flanges adjacent one end of said plate portion, an eject member having a web portion and two side flanges, and second pivot pin extending between said housing side walls parallel to said first pivot pin and through aligned apertures in said eject member side flanges, said web portion having a raised central section extending into an opening in said plate portion, and said eject member side flanges having a nose portion forward of said second pivot pin in engagement with the under surface of the outer free end of said latching member plate portion.
6. The combination of claim 5, further comprising lock means for selectively preventing outward movement of said latching members.
7. The combination of claim 6, wherein said lock means comprises a key-actuated device having a lock cylinder mounted through an aperture in said plate portion adjacent said eject means and having a locking arm rotatable between two angular orientations wherein one of said angular orientations said locking arm interlocks said latching member anD said eject member to prevent any movement of either said latching member or said eject member.
US00301079A 1972-10-26 1972-10-26 Flush type door latch Expired - Lifetime US3782141A (en)

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Cited By (42)

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US4335595A (en) * 1979-12-28 1982-06-22 The Eastern Company Paddle lock with handle disconnect
DE3532152C1 (en) * 1985-09-10 1987-06-25 Daimler Benz Ag Locking device provided with a swiveling handle
US4683736A (en) * 1984-04-18 1987-08-04 The Eastern Company Cabinet lock with recessed handle
US4838056A (en) * 1984-04-18 1989-06-13 The Eastern Company Latch and lock assemblies with expansible latch elements
US4841755A (en) * 1984-04-18 1989-06-27 The Eastern Company Latch and lock assemblies with spring-biased slide bolts
US4850209A (en) * 1986-04-28 1989-07-25 The Eastern Company Latch and lock housings, handles and mounting brackets
USD314131S (en) 1989-07-24 1991-01-29 The Eastern Company Housings for latches and locks
US5042853A (en) * 1990-06-06 1991-08-27 Tri-Mark Paddle latch assembly
US5046340A (en) * 1984-04-18 1991-09-10 The Eastern Company Latch and lock assemblies with spring-biased pivot bolts
US5129879A (en) * 1990-10-30 1992-07-14 Boc Health Care, Inc. Quiet incubator latch
US5469725A (en) * 1993-03-16 1995-11-28 Takigen Manufacturing Co., Ltd. Door locking handle assembly of pull-out and side-swinging lever-action type
WO2000019050A1 (en) * 1998-09-30 2000-04-06 Southco, Inc. Load floor slam-action pawl latch
WO2000048872A1 (en) * 1999-02-22 2000-08-24 Southco, Inc. Load floor latch
US6109669A (en) * 1998-09-30 2000-08-29 Southco, Inc. Load floor slam-action paw latch
WO2001081132A1 (en) * 2000-04-25 2001-11-01 Southco, Inc. Load floor latch
WO2002061224A1 (en) * 2000-08-20 2002-08-08 Southco, Inc. Trunk-boot latch
US6474703B1 (en) * 2000-10-04 2002-11-05 Southco Inc. Trunk-boot latch
US6685240B2 (en) 2000-02-09 2004-02-03 Bauer Products, Inc. Rotary paddle handle assembly
US6719332B2 (en) 2000-12-03 2004-04-13 Southco, Inc. Load floor latch
US6722716B2 (en) * 2001-09-10 2004-04-20 Owen Ralph Baser Door handle assembly
US20040113432A1 (en) * 2002-09-17 2004-06-17 Matthew Hall Double-acting load floor slam latch
US20040119294A1 (en) * 2002-12-20 2004-06-24 Yong Tai Loong (Pte) Ltd. Locking mechanism
US20040222647A1 (en) * 2003-05-07 2004-11-11 Smith Kelly K. Low profile mechanical assist hood latch
US20040239125A1 (en) * 2003-06-02 2004-12-02 John Chen Toolbox rotary latch
EP1526237A1 (en) * 2003-10-25 2005-04-27 Huf Hülsbeck & Fürst GmbH & Co. KG Device for locking and for actuating of flaps, doors or the like
US20050099019A1 (en) * 2003-09-11 2005-05-12 Matthew Hall Load floor latch
US20050140150A1 (en) * 2003-08-18 2005-06-30 Matthew Hall Load floor latch
US20050284199A1 (en) * 2004-06-23 2005-12-29 Gulley Thomas D Latch assembly
US20070200358A1 (en) * 2006-02-28 2007-08-30 John Chen Rotary latch
US20080157546A1 (en) * 2004-06-30 2008-07-03 Southco, Inc. Load-Floor Latch
US20100244465A1 (en) * 2009-03-31 2010-09-30 De Mola Manuel Loret Two assembly parts latch system
US20110074169A1 (en) * 2009-09-30 2011-03-31 Hon Hai Precision Industry Co., Ltd. Locking apparatus for locking hard disk to electronic device
US20120276428A1 (en) * 2011-04-28 2012-11-01 Zoll Circulation, Inc. Latch mechanism for battery retention
US8393187B2 (en) 2008-12-22 2013-03-12 Bauer Products, Inc. Remotely operated locking paddle handle latch assembly
US8621901B2 (en) 2010-07-20 2014-01-07 Bauer Products, Inc. Lock system for vehicles and the like
DE102012111004A1 (en) * 2012-11-15 2014-05-15 C + P Möbelsysteme GmbH & Co. KG Lock assembly for door, particularly cabinet door, has mechanical actuation lock with locking element, which is movable into locking position by spring element, particularly in opening direction towards push-button into release position
US8789858B2 (en) 2009-03-31 2014-07-29 The Young Engineers, Inc. Two assembly parts latch system
US9085919B2 (en) 2008-12-22 2015-07-21 Bauer Products, Inc. Touch pad lock assembly
WO2014167593A3 (en) * 2013-04-09 2015-09-24 Iacobucci Hf Aerospace S.P.A. Double-latch closing system for aeronautical equipment, such as trolleys having ultralight composite panels
US9940767B2 (en) 2008-12-22 2018-04-10 Bauer Products, Inc. Touch pad lock assembly
US10378237B2 (en) 2008-12-22 2019-08-13 Bauer Products, Inc. Touch pad lock assembly with clutch system
US11177667B2 (en) 2011-04-28 2021-11-16 Zoll Circulation, Inc. Viral distribution of battery management parameters

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Cited By (73)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4335595A (en) * 1979-12-28 1982-06-22 The Eastern Company Paddle lock with handle disconnect
US4969916A (en) * 1984-04-18 1990-11-13 The Eastern Company Latch and lock assemblies with spring-biased pivot bolts
US5046340A (en) * 1984-04-18 1991-09-10 The Eastern Company Latch and lock assemblies with spring-biased pivot bolts
US4838054A (en) * 1984-04-18 1989-06-13 The Eastern Company Latch and lock assemblies with lift and turn handles
US4838056A (en) * 1984-04-18 1989-06-13 The Eastern Company Latch and lock assemblies with expansible latch elements
US4841755A (en) * 1984-04-18 1989-06-27 The Eastern Company Latch and lock assemblies with spring-biased slide bolts
US4683736A (en) * 1984-04-18 1987-08-04 The Eastern Company Cabinet lock with recessed handle
DE3532152C1 (en) * 1985-09-10 1987-06-25 Daimler Benz Ag Locking device provided with a swiveling handle
US4850209A (en) * 1986-04-28 1989-07-25 The Eastern Company Latch and lock housings, handles and mounting brackets
US4850208A (en) * 1986-04-28 1989-07-25 The Eastern Company Latch and lock assemblies with spring-biased pivot bolts
USD314131S (en) 1989-07-24 1991-01-29 The Eastern Company Housings for latches and locks
US5042853A (en) * 1990-06-06 1991-08-27 Tri-Mark Paddle latch assembly
US5129879A (en) * 1990-10-30 1992-07-14 Boc Health Care, Inc. Quiet incubator latch
US5469725A (en) * 1993-03-16 1995-11-28 Takigen Manufacturing Co., Ltd. Door locking handle assembly of pull-out and side-swinging lever-action type
US6109669A (en) * 1998-09-30 2000-08-29 Southco, Inc. Load floor slam-action paw latch
WO2000019050A1 (en) * 1998-09-30 2000-04-06 Southco, Inc. Load floor slam-action pawl latch
EP1224099A1 (en) * 1999-02-22 2002-07-24 Southco, Inc. Load floor latch
EP1224099A4 (en) * 1999-02-22 2009-11-11 Southco Load floor latch
WO2000048871A1 (en) * 1999-02-22 2000-08-24 Southco, Inc. Load floor latch
KR100638082B1 (en) * 1999-02-22 2006-10-24 사우스코 인코포레이티드 Load floor latch
US6626472B1 (en) 1999-02-22 2003-09-30 Southco, Inc. Load floor latch
WO2000048870A1 (en) 1999-02-22 2000-08-24 Southco, Inc. Load floor latch
WO2000048872A1 (en) * 1999-02-22 2000-08-24 Southco, Inc. Load floor latch
US6685240B2 (en) 2000-02-09 2004-02-03 Bauer Products, Inc. Rotary paddle handle assembly
WO2001081132A1 (en) * 2000-04-25 2001-11-01 Southco, Inc. Load floor latch
WO2002061224A1 (en) * 2000-08-20 2002-08-08 Southco, Inc. Trunk-boot latch
US6474703B1 (en) * 2000-10-04 2002-11-05 Southco Inc. Trunk-boot latch
GB2380764A (en) * 2000-10-04 2003-04-16 Southco Trunk-boot latch
GB2380764B (en) * 2000-10-04 2004-03-03 Southco Trunk-boot latch
US6719332B2 (en) 2000-12-03 2004-04-13 Southco, Inc. Load floor latch
US6722716B2 (en) * 2001-09-10 2004-04-20 Owen Ralph Baser Door handle assembly
US20040113432A1 (en) * 2002-09-17 2004-06-17 Matthew Hall Double-acting load floor slam latch
US7083205B2 (en) 2002-09-17 2006-08-01 Southco, Inc. Double-acting load floor slam latch
US20040119294A1 (en) * 2002-12-20 2004-06-24 Yong Tai Loong (Pte) Ltd. Locking mechanism
US20040222647A1 (en) * 2003-05-07 2004-11-11 Smith Kelly K. Low profile mechanical assist hood latch
US7614672B2 (en) 2003-05-07 2009-11-10 Hewlett-Packard Development Company, L.P. Low profile mechanical assist hood latch
US20080061563A1 (en) * 2003-05-07 2008-03-13 Hewlett-Packard Development Company, L.P. Low profile mechanical assist hood latch
US7325846B2 (en) * 2003-05-07 2008-02-05 Hewlett-Packard Development Company, L.P. Low profile mechanical assist hood latch
US20040239125A1 (en) * 2003-06-02 2004-12-02 John Chen Toolbox rotary latch
US6973810B2 (en) 2003-06-02 2005-12-13 Ryadon, Inc. Toolbox rotary latch
US20050140150A1 (en) * 2003-08-18 2005-06-30 Matthew Hall Load floor latch
US7399009B2 (en) 2003-08-18 2008-07-15 Southco, Inc. Load floor latch
US20050099019A1 (en) * 2003-09-11 2005-05-12 Matthew Hall Load floor latch
US7052053B2 (en) 2003-09-11 2006-05-30 Southco, Inc. Load floor latch
EP1526237A1 (en) * 2003-10-25 2005-04-27 Huf Hülsbeck & Fürst GmbH & Co. KG Device for locking and for actuating of flaps, doors or the like
US20050284199A1 (en) * 2004-06-23 2005-12-29 Gulley Thomas D Latch assembly
US20080157546A1 (en) * 2004-06-30 2008-07-03 Southco, Inc. Load-Floor Latch
US7798540B1 (en) 2004-06-30 2010-09-21 Southco, Inc. Load-floor latch
US20100253096A9 (en) * 2004-06-30 2010-10-07 Southco, Inc. Load-floor latch
US7497488B2 (en) 2006-02-28 2009-03-03 Ryadon, Inc Rotary latch
US20070200358A1 (en) * 2006-02-28 2007-08-30 John Chen Rotary latch
US8393187B2 (en) 2008-12-22 2013-03-12 Bauer Products, Inc. Remotely operated locking paddle handle latch assembly
US10378237B2 (en) 2008-12-22 2019-08-13 Bauer Products, Inc. Touch pad lock assembly with clutch system
US9940767B2 (en) 2008-12-22 2018-04-10 Bauer Products, Inc. Touch pad lock assembly
US9085919B2 (en) 2008-12-22 2015-07-21 Bauer Products, Inc. Touch pad lock assembly
US8534718B2 (en) * 2009-03-31 2013-09-17 The Young Engineers, Inc. Two assembly parts latch system
US8770634B2 (en) 2009-03-31 2014-07-08 The Young Engineers, Inc. Two assembly parts latch system
US20100244465A1 (en) * 2009-03-31 2010-09-30 De Mola Manuel Loret Two assembly parts latch system
US20120013134A1 (en) * 2009-03-31 2012-01-19 Applied Concepts Aircraft Solutions, Inc. Two Assembly Parts Latch System
US8789858B2 (en) 2009-03-31 2014-07-29 The Young Engineers, Inc. Two assembly parts latch system
US8757675B2 (en) 2009-03-31 2014-06-24 The Young Engineers, Inc. Two assembly parts latch system
US20110074169A1 (en) * 2009-09-30 2011-03-31 Hon Hai Precision Industry Co., Ltd. Locking apparatus for locking hard disk to electronic device
US8424931B2 (en) * 2009-09-30 2013-04-23 Hon Hai Precision Industry Co., Ltd. Locking apparatus for locking hard disk to electronic device
US8621901B2 (en) 2010-07-20 2014-01-07 Bauer Products, Inc. Lock system for vehicles and the like
US9437848B2 (en) * 2011-04-28 2016-09-06 Zoll Circulation, Inc. Latch mechanism for battery retention
US20170162840A1 (en) * 2011-04-28 2017-06-08 Zoll Circulation, Inc. Latch mechanism for battery retention
US9871234B2 (en) * 2011-04-28 2018-01-16 Zoll Circulation, Inc. Latch mechanism for battery retention
US20120276428A1 (en) * 2011-04-28 2012-11-01 Zoll Circulation, Inc. Latch mechanism for battery retention
US11177667B2 (en) 2011-04-28 2021-11-16 Zoll Circulation, Inc. Viral distribution of battery management parameters
US12107444B2 (en) 2011-04-28 2024-10-01 Zoll Circulation, Inc. Viral distribution of battery management parameters
DE102012111004A1 (en) * 2012-11-15 2014-05-15 C + P Möbelsysteme GmbH & Co. KG Lock assembly for door, particularly cabinet door, has mechanical actuation lock with locking element, which is movable into locking position by spring element, particularly in opening direction towards push-button into release position
DE102012111004B4 (en) * 2012-11-15 2019-02-28 C + P Möbelsysteme GmbH & Co. KG lock assembly
WO2014167593A3 (en) * 2013-04-09 2015-09-24 Iacobucci Hf Aerospace S.P.A. Double-latch closing system for aeronautical equipment, such as trolleys having ultralight composite panels

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Effective date: 19890322