CN207223782U - A kind of clamp pliers - Google Patents
A kind of clamp pliers Download PDFInfo
- Publication number
- CN207223782U CN207223782U CN201721038385.6U CN201721038385U CN207223782U CN 207223782 U CN207223782 U CN 207223782U CN 201721038385 U CN201721038385 U CN 201721038385U CN 207223782 U CN207223782 U CN 207223782U
- Authority
- CN
- China
- Prior art keywords
- clamp
- clamp handle
- ratchet
- pawl
- handle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
Abstract
The utility model discloses a kind of clamp pliers, pass through the second hinged clamp handle of the first articulated shaft including the first clamp handle and with first clamp handle, it is characterized in that, consistent with clamping direction along the direction of teeth, the inverted teeth direction ratchet mechanism consistent with unclamping direction is provided between first clamp handle and second clamp handle.In the clamp pliers, ratchet mechanism is provided between the first clamp handle and the second clamp handle, ratchet mechanism is when pawl is located in the teeth groove of ratchet, ratchet mechanism causes the first clamp handle and the second clamp handle to be merely able to move to clamping direction, when being clamped, operating personnel middle can stop force and device is kept clamp position.By the self-locking of ratchet mechanism, the operation of staff is significantly facilitated, and plays certain power-saving function, in conclusion the clamp pliers can efficiently solve the problem of current clamp pliers are inconvenient for operation.
Description
Technical field
Tool implement technical field is the utility model is related to, more specifically to a kind of clamp pliers.
Background technology
Need clip being fixed on pipeline in production process and make its sealing, be currently to be clamped with hand-held clamp.Work
Personnel continuously do pinching action repeatedly using needs during hand-held clamp, and labor intensity is big, easily produce fatigue and the hand that frays, life
It is low to produce efficiency.
It is current people in the art in conclusion how to efficiently solve the problem of current clamp pliers are inconvenient for operation
Member's urgent problem.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of clamp pliers, the clamp pliers can efficiently solve mesh
The problem of preceding clamp pliers are inconvenient for operation.
In order to achieve the above object, the utility model provides following technical solution：
A kind of clamp pliers, including the first clamp handle and with first clamp handle by the second hinged clamp handle of the first articulated shaft,
It is characterized in that, it is provided with consistent with clamping direction along the direction of teeth, inverted teeth side between first clamp handle and second clamp handle
To the ratchet mechanism consistent with unclamping direction.
Preferably, the ratchet mechanism includes ratchet, pawl and for driving the pawl to be against in the ratchet teeth groove
Elastic component.
Preferably, the ratchet is fixed in first clamp handle, and the pawl passes through the second hinge with second clamp handle
Spindle is rotatablely connected, and is provided with the pawl and is pulled handle portion.
Preferably, the elastic component is draw springs, and the first end of the elastic component is connected with second clamp handle,
Two ends are connected with the pawl；When the pawl is located in the teeth groove of the ratchet, second articulated shaft, the elastic component
First end and triangle three angle points of the second end of the elastic component.
Preferably, the ratchet is fixed in first clamp handle, and the pawl is slidably connected with second clamp handle.
Preferably, it is provided with half be oppositely arranged on the clamping part of first clamp handle and the clamping part of second clamp handle
Round card slot.
Preferably, groove passes through circular arc chamfering mistake along between the front end of clamping part on front side of the notch of the semi-circular card slot
Cross.
Preferably, first clamp handle includes first-hand grip and is provided with the first clamping member of clamping part, and described first
Holding part is hinged to be hinged with the first clamping member, and second clamp handle includes second-hand's grip and is provided with the second of clamping part
Clamping piece, second-hand's grip are hinged with second clamping piece；The first-hand grip and second-hand's grip pass through
First articulated shaft is hinged；Further include connecting plate hinged with the first clamping member and second clamping piece respectively.
Preferably, the first connecting hole of the ratchet is set on first articulated shaft, the second connection of the ratchet
Hole is equipped with the connection screw thread part being fixedly connected with the first-hand grip.
A kind of clamp pliers provided by the utility model, the clamp pliers include the first pincers portion, the second pincers portion and ratchet mechanism.
First clamp handle and the second clamp handle are hinged by the first articulated shaft, and the back segment of the back segment of the first clamp handle and the second clamp handle is to hold
Portion, and the leading portion of the first clamp handle and the leading portion of the second clamp handle are clamping part.Wherein ratchet mechanism generally comprises ratchet and pawl,
Ratchet mechanism is included along the direction of teeth with inverted teeth direction, and when pawl is located in the teeth groove of ratchet, ratchet can be free with respect to pawl
To moving along the direction of teeth, and when being moved to inverted teeth direction, pawl can be against on teeth groove cell wall to prevent ratchet from relatively moving.Its
Middle ratchet mechanism is arranged between the first clamp handle and the second clamp handle, i.e. the ratchet of ratchet mechanism and its pawl, and one is arranged on the
In one clamp handle, another is arranged in the second clamp handle.And consistent with the clamping direction along the direction of teeth and inverted teeth side of the ratchet mechanism
To with unclamp direction it is consistent so that the first clamp handle with respect to the second clamp handle to clamping direction move when, ratchet mechanism without prevention,
And in the first clamp handle relative to the second clamp handle to when unclamping direction movement, ratchet mechanism is prevented.
According to above-mentioned technical solution, it is recognised that in the application clamp pliers, when needing to be clamped workpiece, this
When pawl be stuck in ratchet, when the first clamp handle and the second clamp handle are moved to clamping direction, the direction is along the direction of teeth, ratchet machine
Structure will not prevent.And when stagnating rest, even if unclamping the first clamp handle and the second clamp handle at this time, because it is inverted teeth side to unclamp direction
To, institute so as to ratchet mechanism is offseted by ratchet and pawl, to prevent the first clamp handle and the second clamp handle to unclamping direction movement,
And then the first clamp handle and the second clamp handle can be made to be maintained at current clamped condition, and working as needs to unclamp the first clamp handle and the second clamp handle
When, it is only necessary to pawl is departed from ratchet, ratchet can be moved freely towards inverted teeth direction at this time.In the clamp pliers, first
Ratchet mechanism is provided between clamp handle and the second clamp handle, when pawl is located in the teeth groove of ratchet, ratchet mechanism makes ratchet mechanism
Obtain the first clamp handle and the second clamp handle is merely able to move to clamping direction, when being clamped, operating personnel middle can stop
Exert a force and device is kept clamp position.By the self-locking of ratchet mechanism, the operation of staff is significantly facilitated, and is played certain
Power-saving function, in conclusion the clamp pliers can efficiently solve the problem of current clamp pliers are inconvenient for operation.
Brief description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, other attached drawings can also be obtained according to these attached drawings.
Fig. 1 is the partial structural diagram for the clamp pliers that the utility model embodiment provides；
Fig. 2 is the overall structure diagram for the clamp pliers that the utility model embodiment provides.
Marked in attached drawing as follows：
First-hand grip 1, the first clamping member 2, second-hand's grip 3, the second clamping piece 4, connecting plate 5, ratchet 6, pawl 7,
Semi-circular card slot 8, the first articulated shaft 9, the second articulated shaft 10, connection screw thread part 11.
Embodiment
The utility model embodiment discloses a kind of clamp pliers, and to efficiently solve, current clamp pliers are inconvenient for operation to ask
Topic.
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work
All other embodiments obtained, shall fall within the protection scope of the present invention.
- Fig. 2 is please referred to Fig.1, Fig. 1 is the partial structural diagram for the clamp pliers that the utility model embodiment provides；Fig. 2 is
The overall structure diagram for the clamp pliers that the utility model embodiment provides.
In a kind of specific embodiment, a kind of clamp pliers are present embodiments provided, the clamp pliers include the first pincers portion, the
Two pincers portions and ratchet.
First clamp handle and the second clamp handle are hinged by the first articulated shaft 9, the back segment of the back segment of the first clamp handle and the second clamp handle
It is hand grip portion, and the leading portion of the first clamp handle and the leading portion of the second clamp handle are clamping part.The hand grip portion of general first clamp handle and
The direction that the hand grip portion of second clamp handle is mutually close is clamping direction, i.e., when two hand grip portions are mutually close, the clamping part of the first clamp handle
It is mutually close with the clamping part of the second clamp handle, to clamp workpiece；And the hand grip portion of the first clamp handle and the hand grip portion of the second clamp handle are mutually remote
From direction to unclamp direction, i.e. when two hand grip portions are mutually remote, the clamping part phase of the clamping part of the first clamp handle and the second clamp handle
It is remote, to unclamp workpiece.Certainly can also be with being above reversed, i.e., clamping direction can also be mutually remote with two hand grip portions
Direction is consistent.Only need, the first clamp handle with respect to the second clamp handle to clamping direction move when, the clamping part of the first clamp handle and second clamp
The clamping part of handle mutually close to clamping workpiece, and the first clamp handle with respect to the second clamp handle to when unclamping direction and moving, the folder of the first clamp handle
The clamping of portion and the second clamp handle is held mutually away to unclamp workpiece.
Wherein ratchet generally comprises ratchet 6 and pawl 7, and multiple teeth groove are disposed with ratchet 6, and multiple teeth groove can be
Set gradually along straight line or set gradually along circular arc line, the pawl end of pawl 7 is stuck in the teeth groove of ratchet 6.Ratchet includes
Along the direction of teeth with inverted teeth direction, when pawl 7 is located in the teeth groove of ratchet 6, ratchet 6 can be freely to along tooth side with respect to pawl 7
To movement, and when being moved to inverted teeth direction, pawl 7 can be against on teeth groove cell wall to prevent ratchet 6 from relatively moving, so that in spine
When pawl 7 is located in the teeth groove of ratchet 6, ratchet 6 is merely able to unidirectional movement relative to pawl 7.And when external force promotes pawl 7 to depart from ratchet
During 6 teeth groove, ratchet 6 can be two-way any mobile at this time.The concrete structure of ratchet may be referred to the prior art.
Wherein ratchet is arranged between the first clamp handle and the second clamp handle, i.e. the ratchet 6 of ratchet and its pawl 7, a setting
In the first clamp handle, another is arranged in the second clamp handle.And consistent with the clamping direction along the direction of teeth and inverted teeth side of the ratchet
To with unclamp direction it is consistent so that the first clamp handle with respect to the second clamp handle to clamping direction move when, ratchet without prevention, and
Relative to the second clamp handle to when unclamping direction movement, ratchet is prevented first clamp handle.So that in clamping workpiece, first is gripped
Clamp handle and the second clamp handle to clamping direction move when, it is mobile to a certain extent after, even if manipulator's imprudence is unclamped or specially loose
Rest is opened, the first clamp handle and the second clamp handle will not continue to move to clamping direction next time to direction movement is unclamped to facilitate.
In the present embodiment, in the application clamp pliers, when needing to be clamped workpiece, pawl 7 is stuck in ratchet 6 at this time
Interior, when the first clamp handle and the second clamp handle are moved to clamping direction, the direction is along the direction of teeth, ratchet will not prevent.And work as and stop
During stagnant rest, even if unclamping the first clamp handle and the second clamp handle at this time, because it is inverted teeth direction to unclamp direction, institute is so as to ratchet leads to
Cross ratchet 6 and pawl 7 offsets, to prevent the first clamp handle and the second clamp handle from being moved to direction is unclamped, and then the first clamp handle can be made
Current clamped condition is maintained at the second clamp handle, and when needing to unclamp the first clamp handle and the second clamp handle, it is only necessary to make pawl 7 de-
From ratchet 6, ratchet 6 can be moved freely towards inverted teeth direction at this time.In the clamp pliers, the first clamp handle and the second clamp handle it
Between be provided with ratchet, for ratchet when pawl 7 is located in the teeth groove of ratchet 6, ratchet causes the first clamp handle and the second clamp handle to be merely able to
Moved to clamping direction, when being clamped, operating personnel middle can stop force and device is kept clamp position.Pass through
The self-locking of ratchet, significantly facilitates the operation of staff, and plays certain power-saving function, in conclusion the clamp pliers can
Efficiently solve the problem of current clamp pliers are inconvenient for operation.
Further, in order to avoid pawl 7 is arbitrarily mobile to depart from the teeth groove of ratchet 6, pawl 7 is preferably made to keep oriented tooth
The trend of movement in groove, can be the trend moved in the gravity holding 7 oriented teeth groove of pawl by itself, but can operate not
It is convenient.Based on this, preferred ratchet includes elastic component herein, and elastic component is used to drive pawl 7 to be against in the teeth groove of ratchet 6, specifically
, which can make draw springs, can also compression elastic piece, in order to simple in structure, herein preferred elastic component for draw
Stretch spring.
Ratchet concrete structure may be referred to the prior art, and set-up mode can also be as follows.Ratchet 6 can be made to be fixed on first
In clamp handle, and pawl 7 is rotatablely connected with the second clamp handle by the second articulated shaft 10, but ratchet 6 to inverted teeth direction rotate when, teeth groove
Side cell wall offset with pawl 7, and consistent with the radial direction of the second articulated shaft 10 to force direction, this will not be to pawl to power
7 produce moment of torsion, and when ratchet 6 to when rotating along the direction of teeth, teeth groove opposite side cell wall offsets with pawl 7, at this time can be to spine to power
Pawl 7 produces moment of torsion, forces pawl 7 to rotate, so that ratchet 6 can continue to move relative to pawl 7, and then can be moved to next
In teeth groove.At this time in order to facilitate the operation, it can be provided with pawl 7 and pull handle portion, pawl 7 can be driven by external force
Depart from the teeth groove of ratchet 6.The general front end for pulling handle portion and pawl 7 sets the both sides of the second articulated shaft 10 respectively.
Sometimes, it is necessary to which clamp pliers activity is more preferable, you can arbitrarily to unclamp and clamp.Can set a bayonet lock with
Pawl 7 is remained disengaged from the state of 6 teeth groove of ratchet, set bayonet lock more inconvenient.Based on this, elastic component can be made for stretching bullet
Property part, and the first end of elastic component is connected with the second clamp handle, second end and pawl 7 connect, and pawl 7 is located at ratchet 6
Make in teeth groove, three triangle angle points of the second articulated shaft 10, the first end of elastic component, the second end of elastic component, and then
After pawl 7 is turned to certain angle to the direction for departing from teeth groove, elastic component is just to make pawl to the active force of pawl 7 at this time
7 rotate to teeth groove direction is departed from.Support can be provided with the second clamp handle at this time, can protect pawl 7 by elastic component
The state of being currently disengaging from is held, and support can prevent pawl 7 from continuing to move to off-direction.
Certainly, above-mentioned ratchet, or setting are as follows, and ratchet 6 is still relatively fixed with the first clamp handle, and pawl 7 and second
Clamp handle is slidably connected so that ratchet 6 relative to pawl 7 to inverted teeth direction move when, the teeth groove side cell wall of ratchet 6 is to pawl 7
It is vertical with 7 glide direction of pawl to power, and ratchet 6 relative to pawl 7 to when moving along the direction of teeth, another side channel of teeth groove of ratchet 6
Wall supports power to pawl 7, and skidding off teeth groove direction in pawl 7 has component, so as to promoting pawl 7 to skid off teeth groove.
As described above, the first clamp handle and the second clamp handle are mainly that workpiece clamp admittedly by both clamping parts
It is fixed, for more preferable holding dog, preferably it is provided with herein on the clamping part of the first clamp handle and the clamping part of the second clamp handle opposite
The semi-circular card slot 8 set, clip is blocked to facilitate by semi-circular card slot 8.In order to avoid semi-circular card slot 8 and clamping part
Front end forms angle scratch clip, and the front side groove of preferably semi-circular 8 notch of card slot passes through along between the front end of clamping part herein
Circular arc is oriented to transition.So as to form obtuse angle between semi-circular card slot 8 and clamping part front end.
As described above, the first clamp handle includes hand grip portion and clamping part, and the second same clamp handle includes hand grip portion and clamping
Portion, it is to be integrally formed part that can make the first clamp handle and the second clamp handle, and clamp pliers are in scissors-type at this time.Wherein the first clamp handle and second
Clamp handle can also do following setting, and the first clamp handle can be made to include first-hand grip 1 and be provided with the first clamping member of clamping part
2, first-hand grip 1 is hinged with the first clamping member 2, and the second clamp handle includes second-hand's grip 3 and is provided with the second folder of clamping part
Gripping member 4, second-hand's grip 3 is hinged with second-hand's grip 3, the other end and the second clamping piece 4 are hinged；First-hand grip 1 and second
It is hinged by the first articulated shaft 9 to hold part 3；Further include connecting plate 5 hinged with 2 and second clamping piece 4 of the first clamping member respectively.
At this time in order to facilitate fixed ratchet wheel 6, the first connecting hole of ratchet 6 can be made to be set on the first articulated shaft 9, the second of ratchet 6
Connecting hole is equipped with the connection screw thread part 11 being fixedly connected with the first-hand grip 1, and connection screw thread part 11 can be connection
Bolt or attachment screw.
Each embodiment is described by the way of progressive in this specification, what each embodiment stressed be and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or new using this practicality
Type.A variety of modifications to these embodiments will be apparent for those skilled in the art, determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide scope consistent with features of novelty.
Claims (9)
1. a kind of clamp pliers, including the first clamp handle and with first clamp handle by the second hinged clamp handle of the first articulated shaft, its
It is characterized in that, consistent with clamping direction along the direction of teeth, inverted teeth direction is provided between first clamp handle and second clamp handle
The ratchet mechanism consistent with unclamping direction.
2. clamp pliers according to claim 1, it is characterised in that the ratchet mechanism includes ratchet, pawl and for driving
Move the elastic component that the pawl is against in the ratchet teeth groove.
3. clamp pliers according to claim 2, it is characterised in that the ratchet is fixed in first clamp handle, described
Pawl is rotatablely connected with second clamp handle by the second articulated shaft, is provided with the pawl and is pulled handle portion.
4. clamp pliers according to claim 3, it is characterised in that the elastic component is draw springs, the elastic component
First end be connected with second clamp handle, second end is connected with the pawl；The pawl is located in the teeth groove of the ratchet
When, three triangle angle points of the second end of second articulated shaft, the first end of the elastic component and the elastic component.
5. clamp pliers according to claim 2, it is characterised in that the ratchet is fixed in first clamp handle, described
Pawl is slidably connected with second clamp handle.
6. according to claim 2-5 any one of them clamp pliers, it is characterised in that the clamping part of first clamp handle and described
The semi-circular card slot being oppositely arranged is provided with the clamping part of second clamp handle.
7. clamp pliers according to claim 6, it is characterised in that groove edge and clamping on front side of the notch of the semi-circular card slot
Pass through circular arc chamfering transition between the front end in portion.
8. clamp pliers according to claim 7, it is characterised in that first clamp handle includes first-hand grip and is provided with
The first clamping member of clamping part, the first-hand grip is hinged to be hinged with the first clamping member, and second clamp handle includes the
Second-hand grip and the second clamping piece for being provided with clamping part, second-hand's grip are hinged with second clamping piece；Described
Proficiency grip and second-hand's grip are hinged by first articulated shaft；Further include respectively with the first clamping member and institute
State the hinged connecting plate of the second clamping piece.
9. clamp pliers according to claim 8, it is characterised in that the first connecting hole of the ratchet is set in described first
On articulated shaft, the second connecting hole of the ratchet is equipped with the connection screw thread part being fixedly connected with the first-hand grip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721038385.6U CN207223782U (en) | 2017-08-18 | 2017-08-18 | A kind of clamp pliers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721038385.6U CN207223782U (en) | 2017-08-18 | 2017-08-18 | A kind of clamp pliers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207223782U true CN207223782U (en) | 2018-04-13 |
Family
ID=61858268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721038385.6U Active CN207223782U (en) | 2017-08-18 | 2017-08-18 | A kind of clamp pliers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207223782U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109249327A (en) * | 2018-11-22 | 2019-01-22 | 广东拓斯达科技股份有限公司 | A kind of clamping device |
| CN113842198A (en) * | 2021-09-08 | 2021-12-28 | 汕头大学 | Rotary locking type cervical vertebra restorer with 3D printing function |
| TWI751903B (en) * | 2021-02-03 | 2022-01-01 | 日崟興業股份有限公司 | Cutting tool having fast forward mode |
-
2017
- 2017-08-18 CN CN201721038385.6U patent/CN207223782U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109249327A (en) * | 2018-11-22 | 2019-01-22 | 广东拓斯达科技股份有限公司 | A kind of clamping device |
| CN109249327B (en) * | 2018-11-22 | 2024-05-28 | 广东拓斯达科技股份有限公司 | Clamping device |
| TWI751903B (en) * | 2021-02-03 | 2022-01-01 | 日崟興業股份有限公司 | Cutting tool having fast forward mode |
| CN113842198A (en) * | 2021-09-08 | 2021-12-28 | 汕头大学 | Rotary locking type cervical vertebra restorer with 3D printing function |
| CN113842198B (en) * | 2021-09-08 | 2024-02-20 | 汕头大学 | Rotary locking type cervical vertebra restorer with 3D printing function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207223782U (en) | A kind of clamp pliers | |
| CN207174882U (en) | A kind of automatic clamping device of removable regulation | |
| CN109822493A (en) | A kind of autowrench and its spanner fixture | |
| CN107717550B (en) | It is a kind of to adapt to the big way moving fixture of length range | |
| CN206216526U (en) | A kind of round mouth locking pliers of adjustable jaw | |
| CN203062589U (en) | Cam pressing device | |
| CN204598703U (en) | A kind of tobacco stem extractor | |
| CN202507230U (en) | Pincer-type transmission chain detacher | |
| CN207309806U (en) | One-directionally rotate spanner | |
| CN201856202U (en) | Water pipe tongs | |
| CN210909083U (en) | Pipe cutter is with supplementary material feeding unit | |
| CN209717540U (en) | A kind of autowrench and its spanner fixture | |
| CN202174564U (en) | Dismountable mechanical tong | |
| CN209578744U (en) | A kind of automatic positioning caching piping and druming screw device | |
| CN210566556U (en) | Electric valve opening and closing device | |
| CN203973427U (en) | A kind of wrench of jaw translation | |
| CN209078566U (en) | A kind of gripping tongs of curved nozzle type | |
| CN202592234U (en) | Fast loosening and fastening no-thread clamp device | |
| CN207479899U (en) | A kind of mechanical grip of electronic welding | |
| CN206029639U (en) | Pliers convenient to safe handling | |
| CN2537521Y (en) | Automatic reset spanner | |
| CN204450348U (en) | Adjustable ratchet wrench | |
| CN215392961U (en) | Tapping machine convenient for replacing and fixing metal screw cap | |
| CN212359157U (en) | A hand tool for reinforcement | |
| CN106271575A (en) | Pipeline handler and clamp structure thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |