CN109382780A - Torque adjusting device - Google Patents
Torque adjusting device Download PDFInfo
- Publication number
- CN109382780A CN109382780A CN201710667781.3A CN201710667781A CN109382780A CN 109382780 A CN109382780 A CN 109382780A CN 201710667781 A CN201710667781 A CN 201710667781A CN 109382780 A CN109382780 A CN 109382780A
- Authority
- CN
- China
- Prior art keywords
- main body
- hole
- operating stick
- clamping piece
- adjusting device
- 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.)
- Withdrawn
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
- B25B23/142—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers
- B25B23/1422—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers torque indicators or adjustable torque limiters
- B25B23/1427—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers torque indicators or adjustable torque limiters by mechanical means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The present invention provides a kind of torque adjusting device, comprising: a main body, a clamping piece and an operating stick.The main body has a straight hole and a through-hole, which communicates with each other with through-hole.The operating stick gos deep into body interior by straight hole, and the two keeps pivot joint relationship.The clamping piece enters main body via through-hole, and maintains rotatable connection relationship with the deep end of operating stick.When torque adjusting device combines a dynamic torque tool, which can be driven to move along a straight line under the limitation of through-hole by operating stick, and opposite main body moves back and forth shrinking back, stretches out two positions, and can decision dynamic torque tool execute the adjustment operation of torque value.
Description
Technical field
The present invention relates to the adjusting fields of torque tool, particularly relate to a kind of device adjusted suitable for tool torque value.
Background technique
General torque tool, it is in the majority with torsion screwdriver with torque spanner.Either torque spanner or torsion screwdriver, usually
One torque adjusting device can be set, for adjusting the torque value of tool.
Traditional type torque adjusting device, it is many kinds of.Some torque adjusting device is made of a knob and a control ring, rotation
Button outer wall circular row one encloses rack gear, and control ring inner wall also has a circle rack gear, these rack gear length directions and control ring axle center are substantially flat
Row, intermeshing, which can limit knob, to be rotated.
When drawing outside knob stress, after being detached from the engagement range of rack gear, the torque value size of tool could be rotationally adjusted.Rotation
Button is pressed into control ring once again, change torque value must not arbitrarily.
The knob installs a bead, which is pushed by an elastic component toward knob outside.During knob indentation, control ring meeting
Bead is suppressed, resistance is formed to knob.During drawing outside knob, the limitation of bead ring out of hand is easy pop-up, even disappears
Mistake loses, and influences on the adjusting of torque very huge.
In order to improve the regulating device of torque tool, inventor obtains TaiWan, China the M371616th and the successively
The patent rights such as No. I541108, it is on record to check.
Summary of the invention
However, inventor is not therefore self-satisfied, excelsior scientific spirit is acted on, grinds out new torque tune finally
Regulating device.Present invention is primarily aimed at: using the clamping structure of linear motion, with less zero (group) part obtain it is identical from
Effect is closed, cost of manufacture can be saved and promote the market competitiveness.
To achieve the above object, the technical solution adopted by the present invention is that:
A kind of torque adjusting device, it is characterized in that including:
One main body has a straight hole and a through-hole, and the straight hole is along the axially extending of main body, and the through-hole is along main body
Radially extend and communicated with straight hole；
One clamping piece, appearance form multiple teeth, the clamping piece receiving through-hole, and opposite main body can shrink back one
Position moves back and forth with an extended position；
One operating stick has one deeply to hold, which connects main body and can move back and forth along circumferencial direction, this gos deep into
End maintains rotatable connection relationship by straight hole and clamping piece；
In retracted position, the deep end of the operating stick moves on to low orientation along circular motion, limits clamping piece along master
Body is radially retracted into through-hole, height of each tooth of relative reduction in main body；
In extended position, the deep end of the operating stick moves on to higher orientation along circular motion, limits clamping piece edge
Main body extend radially out through-hole, height of each tooth of relative increase in main body.
The torque adjusting device, wherein the straight hole axially extends and by two end of main body, the through-hole perpendicular through
The intermediate position of main body and communicated with straight hole.
The torque adjusting device, wherein the main body has a protrusion and a canister portion, and the two is flat by a disk body section and one
Portion connects together, which runs through between canister portion and disk body section and by through-hole, and the protrusion and plat part are in disk body section two sides；
When deep end enters the through-hole of plat part, the operating stick by disk body section so that protrusion cover outside operating stick and by
One pivot connects together.
The torque adjusting device, wherein the clamping piece has a movable span；
When the deep end of operating stick enters the through-hole of plat part, in the movable span of the deep end merging clamping piece, one
Bar is inserted into clamping piece and by deeply holding, and is rotationally connected with operating stick inside clamping piece.
The torque adjusting device, wherein further include having a: bead and an elastic component；
One torque spanner a, comprising: handle is hollow；One drive rod, configuration are able to rotate in handle；One
Sleeve has several continuous internal tooths, and sleeve configuration is in handle and fixed, these internal tooths is supported to be looped around drive rod
Periphery；
When torque adjusting device is in conjunction with torque spanner, which is placed in handle, is until disk body section is hampered by sleeve
Only；The canister portion entangles drive rod, and the two is connected and can rotate in same direction；The elastic component one end resists drive rod, and the other end pushes pearl
Body touches the deep end of operating stick, generates locating effect to operating stick with bead；In response to clamping piece in retracted position, which is left
The internal tooth of sleeve, and when clamping piece comes extended position, which prevents main body as drive rod rotates in same direction.
The torque adjusting device a, wherein convex surface is formed in the deep end of operating stick, and bead is allowed to touch deeply
The convex surface at end.
In this way, torque adjusting device of the invention combines a dynamic torque tool to be existed under the limitation of through-hole with single clamping piece
Can body interior moves along a straight line, determine the torque value that adjust tool.Even if quantity is than aforementioned TaiWan, China I 541108
The clipping block of number Patent Case is also few, can but obtain roughly the same clutch effect, not only saves being fabricated to for torque adjusting device
This, moreover it is possible to the market competitiveness of hoisting tool sale.
It is more clear and easy to understand to make above-mentioned purpose of the invention, construction, feature and advantage, it is preferable hereby to lift one or more
Embodiment, cooperating appended schema, detailed description are as follows.
Detailed description of the invention
Fig. 1 is exploded view of the torque adjusting device configuration of the present invention in tool.
Fig. 2 is the plan view of main body.
Fig. 3 is the cross-sectional view cut along the line A-A of Fig. 2.
Fig. 4 is the exploded view that knob corresponds to calibration loop.
Fig. 5 is the cross-sectional view after tool combinations torque adjusting device.
Fig. 6 is the cross-sectional view cut along the line B-B of Fig. 5.
Fig. 7 is the cross-sectional view cut along the line C-C of Fig. 5.
Fig. 8 is use of the torque adjusting device in tool with reference to figure.
Fig. 9 is the cross-sectional view cut along the line D-D of Fig. 8.
Description of symbols: main body 10；Straight hole 11；Through-hole 12；Preformed hole 121 is installed；Protrusion 13；Canister portion 14；Disk body section
15；Plat part 16；Pivot 17；Strut 18；Compel tieholen 19；Clamping piece 20；Tooth 21；Movable span 22；Operating stick 30；Deeply hold 31；
Exposed junction 32；Convex surface 33；Bead 40；Elastic component 42；Screw 44；Bolt 46；Knob 50；Outer groove 51；Inside cabin 52；Ring portion 53；
First engaging section 54；Through hole 55；Button 56；Combined hole 57；Torque spanner 60；Handle 61；Drive rod 62；Sleeve 63；Internal tooth
64；Calibration loop 65；External tooth 66；Identification Division 67；Window 68；Eyeglass 69；Forcing piece 70；Bearing 71.
Specific embodiment
Fig. 1, Fig. 4, Fig. 5 are a preferred embodiment of the present invention, the local structure of a tool are drawn, to just like screw or nut
Fastener transmit certain torque value.In the present embodiment, the tool refers to torque spanner 60.It, should in some embodiments
Tool can be torsion screwdriver (not drawing).
Specifically, the torque spanner 60 has a hollow handle 61, a drive rod 62, a sleeve are configured inside handle 61
63 and a calibration loop 65.Wherein, which is hampered by a bearing 71 for being mounted on 61 the inside of handle, is both not easily disconnected from handle
61, and spinning motion can be executed inside handle 61.The sleeve 63 has several continuous internal tooths 64, when sleeve 63 is configured in handle
In 61 and fixed, these internal tooths 64 are supported and are looped around the periphery of drive rod 62 by sleeve 63.The sleeve 63 is inserted into
Calibration loop 65, the window 68 for supporting calibration loop 65 to be formed in handle 61 relative to one rotate.One eyeglass 69 is embedded in the window of handle 61
In mouth 68, has enlarging function to calibration loop 65.The calibration loop 65 has an exclusive tooth 66 and several Identification Divisions 67.These
External tooth 66 is swelled along circumferencial direction in the appearance of calibration loop 65, is continuously arranged together.These Identification Divisions 67 are formed
In the outer circumference surface of calibration loop 65, each Identification Division 67 is Arabic numerals, can come eyeglass 69 with the rotation of calibration loop 65
Lower section, facilitate the interpretation of 60 torque value of torque spanner.
Because of the construction of torque spanner 60, No. 541108 Patent Cases of aforementioned I are approximately identical to, interesting person please read this
The specification of item Patent Case, so it will not go into details for this case.
From Fig. 1-Fig. 5 it can be appreciated that the torque spanner 60 combine combine a torque adjusting device, with torque adjusting device come
Adjust the size of torque value.In the present embodiment, the torque adjusting device by a main body 10, a clamping piece 20, an operating stick 30,
One bead 40, an elastic component 42, a knob 50 and a button 56 form.
In figure, which has two ends, secondly end is passed through by a straight hole 11.The main body 10 be it is hollow, it is vertical there are also one
Pass through the through-hole 12 of straight hole 11.Letter speech, which extends along the axis direction of main body 10, crisscrosses straight along main body 10
The through-hole 12 that diameter direction extends.Therefore, which communicates with each other with through-hole 12.
It from the point of view of exterior contour, is distinguished between 10 2 end of main body are as follows: a protrusion 13, a canister portion 14,15 and of a disk body section
One plat part 16.Respectively at 10 both ends of main body, the two is connected together by disk body section 15 and plat part 16 for the protrusion 13 and canister portion 14.
The plat part 16 is between canister portion 14 and disk body section 15, and plat part 16 and protrusion 13 are located at 15 two sides of disk body section.Its
In, the thickness of the plat part 16 is less than the maximum gauge of protrusion 13 or canister portion 14, and through-hole 12 is allowed to run through the centre of plat part 16
Position.Two installation preformed holes 121 surround the wall of through-hole 12 by plat part 16 towards each other, and each installation preformed hole 121 connects
Connect hole 12.
The clamping piece 20 has multiple teeth 21 and a movable span 22.These teeth 21 are successively formed in outside clamping piece 20
Table typically refers to the top surface of clamping piece 20.The movable span 22 can be placed in through the intermediate position of clamping piece 20 in clamping piece 20
During through-hole 12, movable span 22 is allowed to face the straight hole 11 of main body 10.This moment, which is limited to plat part 16 around logical
The wall in hole 12 can move back and forth along the diametrical direction of main body 10 in a retracted position and an extended position.In other words, the card
Valve part 20 is the reciprocating motion of straight line with respect to main body 10.
The operating stick 30 has one, and deeply end 31 and an exposed junction 32, a convex surface 33 serve as the end face at deep end 31.
When operating stick 30 is placed in the straight hole 11 of main body 10, this deeply holds 31 to come 12 the inside of through-hole by straight hole 11, hence into clip
In the movable span 22 of part 20.
This moment, a pivot 17 passes through protrusion 13 and the intermediate position of operating stick 30, and exposed junction 32 is supported to exceed protrusion 13.The behaviour
Make bar 30 and connected together with main body 10 by pivot 17, operating stick 30 is made to swing back and forth inside main body 10 as pendulum.In addition,
One strut 18 passes through the installation preformed hole 121 of plat part 16, until the deep end 31 of clamping piece 20 and operating stick 30 is by strut 18
Maintain rotatable connection Guan Shizhi.
Because it is separated by a distance that the length (see Fig. 7) of strut 18 is less than 12 2 short side wall surface of through-hole, operating stick 30
Deeply end 31 is moved back and forth according to circumferencial direction around pivot 17, not will receive the influence or interference of main body 10 or plat part 16.
50 appearance of knob be it is rough, not only expand contact area, be more conducive to the operation held with a firm grip, reversed.
Be inside the knob 50 it is hollow, be boundary with a ring portion 53,50 inner space of knob separated as an outer groove 51 and an inside cabin 52,
The outer groove 51 is communicated by hollow ring portion 53 with inside cabin 52.There are also one first engaging section 54 and several through holes for the knob 50
55.First engaging section 54 is multiple continuous teeth, these teeth protuberance is in knob 50 around the inner periphery of the wall of inside cabin 52
Face.These through holes 55 are formed in ring portion 53, and an at least screw 44 is allowed to lock onto disk body section by corresponding through hole 55
15, it is combined together knob 50 and main body 10.
The button 56 has a combined hole 57.When button 56 is placed in the outer groove 51 of knob 50, a bolt 46 passes through combination
Hole 57 lock onto the exposed junction 32 of operating stick 30, and button 56 is made to connect together with operating stick 30, allows button 56 with respect to knob 50
Do switching action.
Then cooperate Fig. 5-Fig. 7, the torque adjusting device combination torque spanner 60 is described in detail and specifically constructs.
The main body 10 merging handle 61 enables canister portion 14 that can entangle part until disk body section 15 is hampered by sleeve 63
Drive rod 62.The urgent tieholen 19 that one forcing piece 70 is formed in canister portion 14 by one, and then be inserted into drive rod 62, make main body 10
Connection drive rod 62 is not easily disconnected from, and the two can also rotate in same direction.
Secondly, the bead 40 compressing elastic component 42 gos deep into the end of drive rod 62 jointly.In the present embodiment, the elastic component
42 be compressed spring, and one end resists drive rod 62, and the other end pushes bead 40 to touch the deep end 31 of operating stick 30, allows bead
40 pairs of operating sticks 30 generate locating effect.Because 33 center of convex surface is higher than both ends, it is any that bead 40 contacts convex surface 33
Low side, it will usually the active force to contend be generated to the swing of operating stick 30, button 46 is avoided without early warning to change position.
In figure, the clamping piece 20 is in extended position.The deep end 31 of the operating stick 30 moves on to higher along circular motion
Orientation, other than button 56 is mobile to the lower section of drawing, while it is radial along main body 10 to limit (or promotion) clamping piece 20
Through-hole 12 is stretched out, each tooth 21 of relative increase makes 21 bridle joint of tooth or the occlusion corresponding internal tooth 64 of sleeve 63 in the height of main body 10.
This moment, which is fixed, so that main body 10 and knob 50 are not able to rotate.Even if operation torsion is pulled
Hand 60 unscrews or locks operation to fastener execution, and also there is no concern that knob 50 is accidentally touched, torque value will not arbitrarily become larger naturally
Or reduction.
From the point of view of Fig. 8, Fig. 9, the clamping piece 20 is in retracted position.The button 56 is mobile to the top of drawing, related operation
The deep end 31 of bar 30 moves on to low orientation along circular motion, and limitation (or pullling) clamping piece 20 is retracted into along main body 10 is radial
Through-hole 12 (see Fig. 3), each tooth 21 of relative reduction release the bridle joint or occluding relation of tooth 21 and internal tooth 64 in the height of main body 10.
In this way, which the knob 50 is that freely, stress is rotated relative to handle 61, canister portion 14 is driven via disk body section 15
Related 62 rotating Vortex of drive rod, can adjust the torque value of torque spanner 60.
In addition, the inside cabin 52 of the 65 part merging knob 50 of calibration loop, allows external tooth 66 to bite the first engaging section 54, makes scale
Ring 65 is with the synchronous actuation of knob 50.The Identification Division 67 (see Fig. 4) that calibration loop 65 is observed by eyeglass 69, can rapidly interpretation
The present torque value of torque spanner 60 very simply, facilitates.
Certainly, the button 56 is mobile to the lower section of drawing, and clamping piece 20 can be allowed to be switched to extended position from retracted position,
So that the torque value that torque spanner 60 remains unchanged.
Claims (6)
1. a kind of torque adjusting device, it is characterized in that including:
One main body (10), there is a straight hole (11) and a through-hole (12), and the straight hole (11) prolongs along the axial direction of main body (10)
It stretches, which radially extends and communicate with straight hole (11) along main body (10)；
One clamping piece (20), appearance are formed multiple teeth (21), the clamping piece (20) receiving through-hole (12), opposite main body
(10) can move back and forth in a retracted position and an extended position；
One operating stick (30), have one deeply end (31), the operating stick (30) connect main body (10) and can be past along circumferencial direction
Multiple movement, the deep end (31) maintain rotatable connection relationship by straight hole (11) and clamping piece (20)；
In retracted position, the deep end (31) of the operating stick (30) moves on to low orientation along circular motion, limits clamping piece
(20) it is radially retracted into through-hole (12) along main body (10), height of each tooth of relative reduction (21) in main body (10)；
In extended position, the deep end (31) of the operating stick (30) moves on to higher orientation along circular motion, limits clip
Part (20) extends radially out through-hole (12) along main body (10), height of each tooth of relative increase (21) in main body (10).
2. torque adjusting device according to claim 1, which is characterized in that the straight hole (11) axially extends and passes through master
(10) two end of body, the through-hole (12) perpendicular through main body (10) intermediate position and communicated with straight hole (11).
3. torque adjusting device according to claim 2, which is characterized in that the main body (10) has a protrusion (13) and one
Portion (14), the two are connected together by a disk body section (15) and a plat part (16), and the plat part (16) is in canister portion (14) and disk body
Run through between portion (15) by through-hole (12), the protrusion (13) and plat part (16) are in disk body section (15) two sides；
When deep end (31) enter the through-hole (12) of plat part (16), the operating stick (30) is by disk body section (15), so that protrusion
(13) it covers and is connected together outside by a pivot (17) in operating stick (30).
4. torque adjusting device according to claim 3, which is characterized in that the clamping piece (20) has a movable span (22)；
When the deep end (31) of operating stick (30) enters through-hole (12) of plat part (16), which is placed in clamping piece
(20) in movable span (22), a strut (18) is inserted into clamping piece (20) and by deeply holding (31), rotates operating stick (30)
It is internal that ground is connected to clamping piece (20).
5. torque adjusting device according to any one of claim 1 to 4, which is characterized in that further include having: a bead
(40) and an elastic component (42)；
One torque spanner (60) a, comprising: handle (61) is hollow；One drive rod (62), configuration is in handle (61)
And it is able to rotate；One sleeve (63) has several continuous internal tooths (64), and the sleeve (63) configuration is in handle (61) and fixes not
It is dynamic, support these internal tooths (64) to be looped around the periphery of drive rod (62)；
When torque adjusting device and torque spanner (60) combine, which is placed in handle (61), until disk body section (15)
Until being hampered by sleeve (63)；The canister portion (14) is entangled drive rod (62), and the two is connected and can rotate in same direction；The elastic component (42)
One end resists drive rod (62), and other end promotion bead (40) touches the deep end (31) of operating stick (30), right with bead (40)
Operating stick (30) generates locating effect；In response to clamping piece (20) in retracted position, which leaves the internal tooth of sleeve (63)
(64), and when clamping piece (20) comes extended position, which engages internal tooth (64), prevents main body (10) with drive rod
(62) it rotates in same direction.
6. torque adjusting device according to claim 5, which is characterized in that a convex surface (33) is formed in operating stick (30)
Deep end (31), allow bead (40) to touch the convex surfaces (33) of deep end (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710667781.3A CN109382780A (en) | 2017-08-07 | 2017-08-07 | Torque adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710667781.3A CN109382780A (en) | 2017-08-07 | 2017-08-07 | Torque adjusting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109382780A true CN109382780A (en) | 2019-02-26 |
Family
ID=65413594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710667781.3A Withdrawn CN109382780A (en) | 2017-08-07 | 2017-08-07 | Torque adjusting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109382780A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113799042A (en) * | 2020-06-16 | 2021-12-17 | 瞬丰实业股份有限公司 | Warning device for torque adjustment |
| CN114789420A (en) * | 2022-05-31 | 2022-07-26 | 苏州浪潮智能科技有限公司 | Screwdriver with adjustable torque |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101042179A (en) * | 2006-03-23 | 2007-09-26 | 庄嘉琼 | Transmission component with torsion limiting protecting structure |
| DE202007010949U1 (en) * | 2007-08-03 | 2007-09-27 | Chen, Chang-Ying, Ta Li | Screwdriver with adjustable torque |
| CN201573158U (en) * | 2009-10-22 | 2010-09-08 | 特典工具有限公司 | Torque wrench |
| CN103846841A (en) * | 2012-11-30 | 2014-06-11 | 瞬丰实业有限公司 | Torque tool |
| TWI444262B (en) * | 2012-09-18 | 2014-07-11 | ||
| CN105459004A (en) * | 2014-09-11 | 2016-04-06 | 瞬丰实业有限公司 | Torque adjustment device and tool provided with torque adjustment device |
-
2017
- 2017-08-07 CN CN201710667781.3A patent/CN109382780A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101042179A (en) * | 2006-03-23 | 2007-09-26 | 庄嘉琼 | Transmission component with torsion limiting protecting structure |
| DE202007010949U1 (en) * | 2007-08-03 | 2007-09-27 | Chen, Chang-Ying, Ta Li | Screwdriver with adjustable torque |
| CN201573158U (en) * | 2009-10-22 | 2010-09-08 | 特典工具有限公司 | Torque wrench |
| TWI444262B (en) * | 2012-09-18 | 2014-07-11 | ||
| CN103846841A (en) * | 2012-11-30 | 2014-06-11 | 瞬丰实业有限公司 | Torque tool |
| CN105459004A (en) * | 2014-09-11 | 2016-04-06 | 瞬丰实业有限公司 | Torque adjustment device and tool provided with torque adjustment device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113799042A (en) * | 2020-06-16 | 2021-12-17 | 瞬丰实业股份有限公司 | Warning device for torque adjustment |
| CN114789420A (en) * | 2022-05-31 | 2022-07-26 | 苏州浪潮智能科技有限公司 | Screwdriver with adjustable torque |
| CN114789420B (en) * | 2022-05-31 | 2024-03-26 | 苏州浪潮智能科技有限公司 | Screw driver with adjustable torque |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190226 |