CN106594415A - Conveniently-screwed type combined connector, use method of conveniently-screwed type combined connector and connecting device for air pipeline and valve - Google Patents
Conveniently-screwed type combined connector, use method of conveniently-screwed type combined connector and connecting device for air pipeline and valve Download PDFInfo
- Publication number
- CN106594415A CN106594415A CN201510665246.5A CN201510665246A CN106594415A CN 106594415 A CN106594415 A CN 106594415A CN 201510665246 A CN201510665246 A CN 201510665246A CN 106594415 A CN106594415 A CN 106594415A
- Authority
- CN
- China
- Prior art keywords
- pipe
- joint
- nut
- nut sleeve
- formula built
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/0206—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the collar not being integral with the pipe
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/0212—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means
- F16L19/0218—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means comprising only sealing rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Valve Housings (AREA)
Abstract
The invention provides a conveniently-screwed type combined connector, a use method of the conveniently-screwed type combined connector and a connecting device of an air pipeline and a valve. The conveniently-screwed type combined connector is good in sealing performance, assembling can be achieved with hands and without a wrench, and the conveniently-screwed type combined connector is particularly suitable for places where space is limited and wrenches are not properly used. The conveniently-screwed type combined connector comprises three assemblies including a nut sleeve, a union nut and a pipe connector, wherein the three assemblies are used in cooperation with a pipe, the pipe connector is sleeved with the union nut, the union nut is sleeved with the nut sleeve, and one end of the pipe connector is connected with the pipe. The nut sleeve is assembled on a pneumatic braking pipe assembly in advance, the union nut is sleeved with the nut sleeve when the pipe assembly is installed, the nut sleeve is screwed with hands, and the union nut can be arranged on the to-be-connected connector in a sleeving manner. A groove is formed in the sealing conical face of the pipe connector, a rubber sealing ring is arranged on the sealing conical face, and therefore the sealing conical face of the pipe connector is in sealing fit with the sealing conical face of the to-be-connected connector. The conveniently-screwed type combined connector is suitable for connection between pipes and is also suitable for connection between the valve and the pipeline.
Description
Technical field
The invention belongs to air brake piping field, is particularly well-suited to the air brake piping field of Medium or severe type automobile, relate to
And a kind of built-up joint and its using method, the connection that is used in particular between the connection of air pipe and valve or Guan Yuguan.
Background technology
Collar joint for the connection of heavy truck brake piping needs spanner in assembling, and screw-down torque is larger,
And sealing is poor.This patent develops a kind of just stubborn formula built-up joint, good airproof performance, without the need for spanner, with handss
Assembling is realized, being particularly well-suited to limited space should not use where spanner.
The content of the invention
The present invention provides a kind of attachment means for just twisting formula built-up joint and its using method, air pipe and valve, and it is adopted
With new installation tightening way, good airproof performance, without the need for spanner, assembling is capable of achieving with handss, is particularly well-suited to space
It is limited to use where spanner.Gas braking pipe assembly is preinstalled with nut sleeve, by spiral shell when pipe assembly is installed
Mother set is placed on union nut, and with handss nut sleeve is turned clockwise, and union nut can be set in the joint to be coupled.
Rubber seal is slotted and had on the sealing cone of pipe joint, is formed sealing with the joint sealing conical surface for being coupled and is matched somebody with somebody
Close.
The technical scheme is that：
It is a kind of just to twist formula built-up joint, it is characterised in that：
Including nut sleeve 1, union nut 2, pipe joint 3, pipe joint overcoat union nut, union nut overcoat spiral shell
Mother set, pipe joint one end is connected with pipe 5；
Nut sleeve, its inner side is provided with hexagonal counterbore 102, and nut sleeve outside is provided with least two lugs 101, described convex
Ear is arranged perpendicular to nut axis direction, and lug has the stress surface to nut direction of rotation force；
Union nut, its outside dimension coordinates for tightening with nut sleeve hexagonal counterbore internal diameter size, in union nut
Chamber includes the first chamber, and its first intracavity screw thread is used to tighten the external screw thread of connected piece；
The inwall interference fit of pipe joint, its first end outer wall and connected piece, the second end is connected with pipe.
Further, described nut sleeve two ends are equipped with hexagonal counterbore.
Further, two described lugs are separated by 180 ° of settings along nut sleeve circumferencial direction, and lug is section half
The plate of circle is simultaneously arranged perpendicular to nut sleeve outer wall, and the width of lug is axially in parallel with nut sleeve.
Further, the end outside of the first end of the pipe joint is the conical surface 301,302 is slotted on the conical surface, in groove
Equipped with sealing ring 303, the conical surface is interference fit with the inner conical surface 401 of the end of one end of connected piece；Pipe
The end of joint second is socketed with pipe.
Further, the pipe is nylon tube.
Further, described connected piece is straight coupling 5, straight coupling other end connecting tube or valve body；When
When straight coupling connecting tube is with pipe, straight coupling two ends are by just twisting formula built-up joint connecting tube.
The attachment means of a kind of air pipe and valve, it is characterised in that straight coupling one end connects any one above-mentioned just
Stubborn formula built-up joint, the other end threaded connection valve body of straight coupling, straight coupling 5 is connected piece.
A kind of using method for just twisting formula built-up joint, it is characterised in that just twist formula combination using any of the above-described kind and connect
Head, puts pipe by nut sleeve, union nut successively, then by pipe joint frock or instrument extruding insertion tube end,
Apply screw-down torque at the lug of nut sleeve with handss during installation, you can by union nut together with joint for pipe, pipe box
Loaded on connected piece.
Further, a pipe two ends can be respectively adopted one group of any of the above-described described a kind of just stubborn formula built-up joint,
Union nut connects valve body or other pipelines by straight coupling.
Further, the simple pipe of arrangement shorter for length, two ends can one nut sleeve of a subpackage, the nut sleeve
Can slide along pipe, be respectively completed pipe two ends tightens operation.
Description of the drawings
Fig. 1 is the axonometric chart of the nut sleeve of one embodiment that the present invention just twists formula built-up joint；
Fig. 2 is the half-sectional front view of the nut sleeve of one embodiment that the present invention just twists formula built-up joint；
Fig. 3 is the side view of the nut sleeve of one embodiment that the present invention just twists formula built-up joint；
Fig. 4 is the top view of the nut sleeve of one embodiment that the present invention just twists formula built-up joint；
Fig. 5 is the half-sectional front view of the union nut of one embodiment that the present invention just twists formula built-up joint；
Fig. 6 is the half-sectional side view of the union nut of one embodiment that the present invention just twists formula built-up joint；
Fig. 7 is the half-sectional front view of the pipe joint of one embodiment that the present invention just twists formula built-up joint；
Fig. 8 is the side view of the pipe joint of one embodiment that the present invention just twists formula built-up joint；
Fig. 9 is the axonometric chart of the pipe joint of one embodiment that the present invention just twists formula built-up joint；
Figure 10 is the half-sectional of the straight coupling for valve connection of one embodiment that the present invention just twists formula built-up joint
Front view；
Figure 11 is the side-looking of the straight coupling for valve connection of one embodiment that the present invention just twists formula built-up joint
Figure；
Figure 12 is the schematic diagram that nut sleeve is put nylon tube in one embodiment of the invention；
Figure 13 is the schematic diagram that union nut is put nylon tube in one embodiment of the invention；
Figure 14 is that pipe joint is inserted in into nylon tube schematic diagram in one embodiment of the invention；
Figure 15 is the end construction figure of one embodiment of the invention；
Figure 16 is the outline drawing that one embodiment of the invention is used for long tube connection；
Figure 17 is that one embodiment of the invention is used for the sub outline drawing connected when sharing a nut sleeve of short tube；
Figure 18 is that straight coupling is installed on valve body schematic diagram in one embodiment of the invention；
Figure 19 is just to twist formula joint in one embodiment of the invention to be installed on valve body schematic diagram；
Figure 20 is just to twist formula joint in one embodiment of the invention to be used for two pipe Butt Assembling structural representations.
Specific embodiment
The present invention is further described in conjunction with the figures above and specific embodiment：
Just twisting formula built-up joint includes nut sleeve 1, union nut 2,3 three components of pipe joint (see Fig. 1～4, figure
5～6, Fig. 7～9), three components coordinate pipes 5 to use, pipe joint overcoat union nut, union nut overcoat spiral shell
Mother set, pipe joint one end is connected with pipe.
Nut sleeve, its inner side is provided with hexagonal counterbore 102, and nut sleeve outside is provided with least two lugs 101, described convex
Ear is arranged perpendicular to nut axis direction, and lug has the stress surface to nut direction of rotation force；
Union nut, its outside dimension coordinates for tightening with nut sleeve hexagonal counterbore internal diameter size, in union nut
Chamber includes the first chamber, and its first intracavity screw thread is used to tighten the external screw thread of connected piece；
The inwall interference fit of pipe joint, its first end outer wall and connected piece, the second end is connected with pipe.
In a preferred embodiment, using nylon tube, just twist formula built-up joint and constitute pipe assembly with nylon tube.
Nut sleeve two ends are equipped with hexagonal counterbore.Two described lugs are separated by 180 ° of settings along nut sleeve circumferencial direction,
Lug is the semicircular plate in section and arranges perpendicular to nut sleeve outer wall that the width of lug is axially flat with nut sleeve
OK.
Straight coupling 4 (see Figure 10) is installed on valve body interface, for the installation between pipe assembly and valve body.
There is hexagonal counterbore at nut sleeve two ends, coordinate in order to apply screw-down torque with the union nut outside of hexagonal.Spiral shell
There are two lugs in mother set outside, is to tighten offer stress point manually.
On the pipe socket end conical surface 301 fluting 302 and subpackage have rubber seal 303, in order to valve body interface
Straight coupling inner conical surface 401 formed sealing coordinate.
As shown in Figure 12, Figure 13, Figure 14, successively nut sleeve, union nut are put into nylon tube, then pipe is connect
Head frock and instrument extruding insertion nylon tube end.The pipe other end is according to three components of installation in the same manner.Subpackage is completed
As shown in Figure 15, general shape is as shown in Figure 16 for pipe assembly end construction afterwards.Arrangement letter shorter for length
Single pipe assembly, can one nut sleeve (as shown in Figure 17) of a subpackage, the nut sleeve can slide along pipe, distinguish
Complete pipe two ends tightens operation.
Straight coupling is installed on into valve body interface, as shown in Figure 18.Pipe assembly one end is installed on into straight coupling,
As shown in Figure 19.Nut sleeve is enclosed within union nut and clockwise at nut sleeve lug with handss in installation process
Apply screwing force, you can union nut is set in into straight coupling.Union nut applies axial propulsive force to pipe joint,
Make its end seal male cone (strobilus masculinus) be formed with straight coupling sealing inner conical surface to coordinate, the rubber seal of wherein pipe joint is received
Extruding is deformed, it is ensured that sealing effectiveness.
Docking between pipe, as shown in figure 20, its principle is identical.
In other examples, pipe joint can also be connected using other connected modes with pipe.
In other examples, the male cone (strobilus masculinus) of pipe joint can also adopt the face of other forms interior with connected piece
Wall coordinates.
In other examples, straight coupling can be replaced by other connected pieces, not affect quick connection
Using effect.
In other examples, the lug in nut sleeve can be to arrange by the way of being reversed using other, its shape
Can be the other shapes such as square, the shape and quantity of lug can specifically be arranged according to operational circumstances.
Finally it should be noted that:Above example only to illustrate this case technical scheme rather than a limitation；To the greatest extent
Pipe has been described in detail with reference to preferred embodiment to this case, and those of ordinary skill in the art should be understood：
Still the specific embodiment of this case can be modified or equivalent is carried out to some technical characteristics；And not
Depart from the spirit of this case technical scheme, it all should cover in the middle of the technical scheme scope being claimed in this case.
Claims (10)
- It is 1. a kind of just to twist formula built-up joint, it is characterised in that：Including nut sleeve (1), union nut (2), pipe joint (3), pipe joint overcoat union nut, connection Pipe nut overcoat nut sleeve, pipe joint one end is connected with pipe (5)；Nut sleeve, its inner side is provided with hexagonal counterbore (102), and nut sleeve outside is provided with least two lugs (101), The lug is arranged perpendicular to nut axis direction, and lug has the stress surface to nut direction of rotation force；Union nut, its outside dimension coordinates for tightening with nut sleeve hexagonal counterbore internal diameter size, union spiral shell Female inner chamber includes the first chamber, and its first intracavity screw thread is used to tighten the external screw thread of connected piece；The inwall interference fit of pipe joint, its first end outer wall and connected piece, the second end is connected with pipe.
- 2. it is according to claim 1 a kind of just to twist formula built-up joint, it is characterised in that described nut sleeve two ends It is equipped with hexagonal counterbore.
- 3. it is according to claim 1 and 2 a kind of just to twist formula built-up joint, it is characterised in that described two are convex Ear is separated by 180 ° of settings along nut sleeve circumferencial direction, and lug is for the semicircular plate in section and outside nut sleeve Wall is arranged, and the width of lug is axially in parallel with nut sleeve.
- 4. according to the arbitrary described a kind of just stubborn formula built-up joint of claims 1 to 3, it is characterised in that the pipe joint First end end outside be the conical surface (301), on the conical surface slot (302), groove built with sealing ring (303), The conical surface is interference fit with the inner conical surface (401) of the end of one end of connected piece；The end of pipe joint second With pipe socket.
- 5. according to the arbitrary described a kind of just stubborn formula built-up joint of Claims 1 to 4, it is characterised in that the Guan Weini Long Guan.
- 6. according to the arbitrary described a kind of just stubborn formula built-up joint of Claims 1 to 5, it is characterised in that described is connected Fitting is straight coupling (4), straight coupling other end connecting tube or valve body；When straight coupling connecting tube and pipe When, straight coupling two ends are by just twisting formula built-up joint connecting tube.
- 7. attachment means of a kind of air pipe and valve, it is characterised in that straight coupling one end is connected by aforesaid right will 1～4 arbitrary described a kind of just stubborn formula built-up joint, the other end of straight coupling is asked to be threadedly coupled valve body, directly Pass joint (4) is connected piece.
- 8. a kind of using method for just twisting formula built-up joint, it is characterised in that using the arbitrary institute of the claims 1～4 State it is a kind of just twist formula built-up joint, successively nut sleeve, union nut are put into pipe, then by pipe joint recruitment Dress or instrument extruding insertion tube end, screw-down torque is applied during installation with handss at the lug of nut sleeve, you can Union nut is loaded on into connected piece together with joint for pipe, pipe box.
- 9. a kind of using method for just twisting formula built-up joint according to claim 8 a, it is characterised in that pipe Two ends can be respectively adopted that one group of the claims 1～4 are arbitrary described a kind of just to twist formula built-up joint, union Nut connects valve body or other pipelines by straight coupling.
- 10. a kind of using method for just twisting formula built-up joint according to claim 9, it is characterised in that for length The simple pipe of the shorter arrangement of degree, two ends can one nut sleeve of a subpackage, the nut sleeve can slide along pipe, divide Do not complete pipe two ends tightens operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510665246.5A CN106594415A (en) | 2015-10-15 | 2015-10-15 | Conveniently-screwed type combined connector, use method of conveniently-screwed type combined connector and connecting device for air pipeline and valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510665246.5A CN106594415A (en) | 2015-10-15 | 2015-10-15 | Conveniently-screwed type combined connector, use method of conveniently-screwed type combined connector and connecting device for air pipeline and valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106594415A true CN106594415A (en) | 2017-04-26 |
Family
ID=58552321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510665246.5A Pending CN106594415A (en) | 2015-10-15 | 2015-10-15 | Conveniently-screwed type combined connector, use method of conveniently-screwed type combined connector and connecting device for air pipeline and valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106594415A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106958701A (en) * | 2017-05-08 | 2017-07-18 | 深圳市聚友缘电子科技有限公司 | A kind of piecing devices and its operating method |
| CN108115400A (en) * | 2017-12-20 | 2018-06-05 | 重庆洛昂机械有限公司 | Oil inlet pipe processing assembling equipment |
| CN109141752A (en) * | 2018-07-04 | 2019-01-04 | 西安航天发动机有限公司 | It is a kind of for protecting surface treatment late gate to connect the air seal test attachment device of mouth |
| CN109578713A (en) * | 2019-01-25 | 2019-04-05 | 广州市科绿士环保设备有限公司 | A kind of double-deck tube seal structure of heat exchange and its installs fixture, installation method |
| CN109630788A (en) * | 2019-01-25 | 2019-04-16 | 广州市科绿士环保设备有限公司 | A kind of heat exchange bimetallic tube sealed connecting component and its installs fixture, installation method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2080462A (en) * | 1980-07-17 | 1982-02-03 | Lunken Co Ltd | Pipe connector |
| JPH08326968A (en) * | 1995-05-31 | 1996-12-10 | Takashige Sangyo Kk | Insulated pipe connector |
| CN2260941Y (en) * | 1996-12-11 | 1997-08-27 | 佛山市日丰企业有限公司 | Temp.-resistant pressure-resistant pipe joint easy for mounting and dismounting |
| CN2295880Y (en) * | 1997-04-28 | 1998-10-28 | 党建真 | High sealing reliability stop valve of air conditioner |
| CN202955361U (en) * | 2012-12-06 | 2013-05-29 | 上海皮尔萨管业有限公司 | Self-adjusting loose joint |
| CN203322552U (en) * | 2013-06-27 | 2013-12-04 | 贵州航天精工制造有限公司 | Threaded connection component for vacuum tube joint |
-
2015
- 2015-10-15 CN CN201510665246.5A patent/CN106594415A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2080462A (en) * | 1980-07-17 | 1982-02-03 | Lunken Co Ltd | Pipe connector |
| JPH08326968A (en) * | 1995-05-31 | 1996-12-10 | Takashige Sangyo Kk | Insulated pipe connector |
| CN2260941Y (en) * | 1996-12-11 | 1997-08-27 | 佛山市日丰企业有限公司 | Temp.-resistant pressure-resistant pipe joint easy for mounting and dismounting |
| CN2295880Y (en) * | 1997-04-28 | 1998-10-28 | 党建真 | High sealing reliability stop valve of air conditioner |
| CN202955361U (en) * | 2012-12-06 | 2013-05-29 | 上海皮尔萨管业有限公司 | Self-adjusting loose joint |
| CN203322552U (en) * | 2013-06-27 | 2013-12-04 | 贵州航天精工制造有限公司 | Threaded connection component for vacuum tube joint |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106958701A (en) * | 2017-05-08 | 2017-07-18 | 深圳市聚友缘电子科技有限公司 | A kind of piecing devices and its operating method |
| CN108115400A (en) * | 2017-12-20 | 2018-06-05 | 重庆洛昂机械有限公司 | Oil inlet pipe processing assembling equipment |
| CN109141752A (en) * | 2018-07-04 | 2019-01-04 | 西安航天发动机有限公司 | It is a kind of for protecting surface treatment late gate to connect the air seal test attachment device of mouth |
| CN109578713A (en) * | 2019-01-25 | 2019-04-05 | 广州市科绿士环保设备有限公司 | A kind of double-deck tube seal structure of heat exchange and its installs fixture, installation method |
| CN109630788A (en) * | 2019-01-25 | 2019-04-16 | 广州市科绿士环保设备有限公司 | A kind of heat exchange bimetallic tube sealed connecting component and its installs fixture, installation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106594415A (en) | Conveniently-screwed type combined connector, use method of conveniently-screwed type combined connector and connecting device for air pipeline and valve | |
| US6598908B1 (en) | Hydraulic fitting | |
| US20130154257A1 (en) | Hose coupling | |
| CN203585616U (en) | Son and mother sealing ring for connecting smooth metal pipes | |
| CN106795986A (en) | The manufacture method of hoseline and hoseline | |
| CN105114735A (en) | Pipe connector and pipe connector assembly | |
| CN102032404A (en) | Pneumatic seal joint assembly | |
| CN104455815B (en) | Tapered sealing pipe connector for excavator | |
| JP2007292128A (en) | Joining member for pipe joint | |
| CN205226682U (en) | Sealing joint , connecting pipe and pipeline | |
| US20050134043A1 (en) | Fluid coupling assembly | |
| CN201757234U (en) | Rotary joint for quick connector | |
| CN204083595U (en) | A kind of two degrees of freedom gas piping angle coupling | |
| CN105090639A (en) | Reducing two-way pipe joint and reducing two-way pipe joint component | |
| CN102269304A (en) | Rapid connecting assembly-pipe fitting structure | |
| CN201739658U (en) | Structure capable of quickly connecting and combining pipe fittings | |
| CN206965280U (en) | The two-way docking facilities of axle sleeve type based on metal filter bag | |
| CA3094647C (en) | Universal quick connector | |
| CN203273138U (en) | Fast tee-joint pipe joint | |
| US3610664A (en) | Hose connection | |
| CN105333247A (en) | Sealing connector, connecting pipe and pipeline | |
| CN107289208B (en) | Adapter joint for small-caliber gas/liquid path pressure measurement | |
| EP3387311B1 (en) | A tube-to-tube connection device and method of same | |
| CN103899859A (en) | Tube connector sealed twice and clamping sleeve thereof | |
| CN221300424U (en) | Stop valve and stop valve connection structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170426 |
|
| WD01 | Invention patent application deemed withdrawn after publication |