CN109130731A - A kind of automobile-used aluminium alloy traction component of trailer/semi-mounted - Google Patents
A kind of automobile-used aluminium alloy traction component of trailer/semi-mounted Download PDFInfo
- Publication number
- CN109130731A CN109130731A CN201811237985.4A CN201811237985A CN109130731A CN 109130731 A CN109130731 A CN 109130731A CN 201811237985 A CN201811237985 A CN 201811237985A CN 109130731 A CN109130731 A CN 109130731A
- Authority
- CN
- China
- Prior art keywords
- hole
- plate
- pin
- towing
- trailer
- 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
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 10
- 239000000956 alloy Substances 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 238000010079 rubber tapping Methods 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 206010016256 fatigue Diseases 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 208000020442 loss of weight Diseases 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60D—VEHICLE CONNECTIONS
- B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
- B60D1/48—Traction couplings; Hitches; Draw-gear; Towing devices characterised by the mounting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60D—VEHICLE CONNECTIONS
- B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
- B60D1/24—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60D—VEHICLE CONNECTIONS
- B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
- B60D1/48—Traction couplings; Hitches; Draw-gear; Towing devices characterised by the mounting
- B60D1/488—Traction couplings; Hitches; Draw-gear; Towing devices characterised by the mounting mounted directly to the chassis of the towing vehicle
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
Abstract
The invention discloses a kind of automobile-used aluminium alloy traction components of trailer/semi-mounted, including towing plate (1), wearing plate (2), pin disk (3) and towing pin (4), the material of the towing plate (1) and pin disk (3) is 2 ×××s/6 ×××s/7 ××× high-strength aluminum alloy materials, towing plate (1) is T-type plate, upper surface connecting pin disk (3), lower surface connects wearing plate (2), and counter-sunk screw (7) connects traction body frame through wearing plate (2) and towing plate (1) afterwards.The pin disk (3) is fixedly connected with towing plate (1) upper surface, and towing pin (4) upper end and pin disk (3) are fixed, and the traction seat on lower end and trailer/semitrailer is rotatablely connected.The automobile-used aluminium alloy traction component light weight of the trailer/semi-mounted, securely wear-resisting, long service life.
Description
Technical field
The present invention relates to trailer technical fields, and in particular to a kind of automobile-used aluminium alloy traction component of trailer/semi-mounted.
Background technique
Automotive light weight technology is the important means of energy-saving and emission-reduction, there is data to suggest that car weight reduces 10%, oil consumption can reduce 6-
8%, every reduction consumes one liter of gasoline, so that it may reduce the CO of 2.44kg2Discharge.Lightweight can also improve the acceleration of automobile, system
A variety of comprehensive performances such as dynamic, enhancing vehicle handling stability etc..Therefore, automotive light weight technology is to measure auto industry technological contribution
The technical goal that one of the important signs that and automobile industry are pursued for a long time is the important directions of development of automobile technology.
Trailer/semitrailer realizes that lightweight can not only be in energy-saving and emission-reduction as the vehicles for loading large-scale, heavy goods
Aspect is significant, and all has a great impact to structural behaviour and product economy aspect.Light-weight design is in addition to right
Structure uses outside new technology, is also embodied in high-strength light material using upper.Compared to timber, plastics, composite material, heat-resisting
Steel and stainless steel etc., aluminum alloy materials possess the intensity comparable with steel, and (yield strength reaches after the heat treatment of 6 ××× system profiles
300MPa or more), relatively good elasticity modulus, high toughness and corrosion resistance, therefore aluminium alloy trailer/semitrailer has weight
The advantages that amount is light, transport capacity is strong, fuel-saving environmental protection, less trouble, long corrosion fatigue life.
The general trailer of existing market/semitrailer traction component is steelwork, by towing plate, the pin structures such as disk and towing pin
At towing plate and pin disk weld, and towing pin is fixed by bolts on pin disk, and it is big that there are weight, and fatigue easily occurs for welding position
The problem of cracking.
Summary of the invention
It is an object of the present invention to solve the deficiency of the existing technology and provide a kind of automobile-used novel aluminum alloys of trailer/semi-mounted
Traction component is suitable for trailer/semitrailer trailer system.
The technical scheme is that a kind of automobile-used aluminium alloy traction component of trailer/semi-mounted, including towing plate, wearing plate,
Disk and towing pin are sold, the towing plate is T-type metal plate, first through hole is equipped among towing plate, if being arranged around first through hole
Do equally distributed countersunk.Traction plate surface is also uniformly arranged several countersunk holes.
The wearing plate is rectangular metal sheet, and wearing plate is located at below towing plate, corresponds to first through hole on wearing plate
Position, which is equipped with, correspond to the position of countersunk with aperture through-hole and also is provided with through-hole on wearing plate, and through-hole internal diameter is greater than countersunk
Diameter.The position that countersunk hole is corresponded on wearing plate is equipped with aperture, and tapping is equipped with flange.Counter-sunk screw is through flange and buries
Wearing plate and towing plate are fixedly connected with traction body frame after head screw hole.
The pin disk is fixedly connected with towing plate upper surface, and circular pegs disk cover closed at one end is equipped among pin disk, described
Pin disk cover raises upward, and sells and is uniformly provided with several second through-holes on disk cover edge；Pin disk cover bottom level extends outward a circle
Ring flange, is uniformly distributed several third through-holes on the ring flange, the third through-hole position with to immerse oneself in hole site corresponding up and down.
Ring flange bottom surface is extended with bulge loop downward vertically, and bulge loop inner wall and pin disk cover form interior cylindrical cavity.The bulge loop outer wall and first
Via clearance cooperation, the second bolt and nut component sequentially passes through flange, countersunk and third through-hole from top to bottom, by wearing plate,
Towing plate is fixedly connected with pin disk.
Circular stationary plane, the stationary plane and interior cylinder cavity wall clearance fit are provided with above the towing pin, Gu
Determine face edge and be provided with equally distributed several internal thread through hole, the internal thread through hole is corresponding with the second lead to the hole site, and leads to
The first bolt and nut component is crossed through connection；Stationary plane lower end surface center is equipped with cylindrical pin, and the pin circumference is equipped with
Traction seat on groove, the groove and trailer/semitrailer is rotatablely connected.
Further, the material of the towing plate and pin disk is 2 ×××s/6 ×××s/7 ××× high-strength aluminum alloys
Material.
Further, for the towing plate with a thickness of 10~15mm, the pin disk overall thickness is 20~50mm.
Further, the wearing plate is wear-resisting steel material.
Further, the wearing plate is with a thickness of 1~5mm.
Further, the towing pin is standard steel product.
Compared with prior art, beneficial effects of the present invention:
(1) each components in the automobile-used novel aluminum alloy traction component of trailer/semi-mounted of the present invention remove towing pin and wearing piece
Outside, material be 2 ×××s/6 ×××s/7 ××× high-strength aluminum alloy materials, the loss of weight about 30-40% compared with steelwork, gently
Quantification effect is obvious.
(2) the automobile-used novel aluminum alloy traction component connection type of trailer/semi-mounted of the present invention is that screw or bolt and nut connect,
Compared with the welding manner of steelwork, reduce the risk of fatigue cracking.
(3) it is provided with wear-resisting steel plate in the automobile-used novel aluminum alloy traction component of trailer/semi-mounted of the present invention, aluminium is effectively prevent to close
The abrasion of golden towing plate and traction seat greatly strengthens the service life of aluminium alloy towing plate.
(4) wear-resisting steel plate in the present invention will be wear-resisting using the screw on fixed traction plate to vehicle frame provided with flanging bore
Steel plate is placed into below aluminium alloy towing plate, connector is not further added by, to avoid further increasing cost and weight.
Detailed description of the invention
A specific embodiment of the invention is described in further detail with reference to the accompanying drawing, in which:
Fig. 1 is the explosive view of the automobile-used aluminium alloy traction component of trailer/semi-mounted of the present invention.
Fig. 2 is the bottom view of the automobile-used aluminium alloy traction component of trailer/semi-mounted of the present invention.
Fig. 3 is cross-sectional view of the Fig. 2 along the face A-A.
Fig. 4 is the enlarged drawing of C in Fig. 3.
Fig. 5 is cross-sectional view of the Fig. 2 along the face B-B.
In figure: 1- towing plate 2- wearing plate 3- sells the first bolt and nut component of disk 4- towing pin 5- the second bolt of 6-
Nut assembly 7- counter-sunk screw 11- first through hole 12- countersunk 13- countersunk hole 21- flange 31- sells disk cover 32- method
Cylindrical cavity 41- stationary plane 42- internal thread through hole 43- in blue disk 33- bulge loop 34- the second through-hole 35- third through-hole 36-
Pin 44- groove
Specific embodiment
Below with reference to embodiment attached drawing, clear, complete description is carried out to technical solution of the present invention.It is retouched in of the invention
In stating, it should be noted that the orientation or position of the instructions such as term " center ", "upper", "lower", "left", "right", "inner", "outside"
Relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplification of the description, without referring to
Show or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot manage
Solution is limitation of the present invention.In addition, term " first ", " second ", " third " are used for description purposes only, and should not be understood as referring to
Show or imply relative importance.
As shown in Fig. 1-5, the automobile-used aluminium alloy traction component of trailer/semi-mounted of the present invention includes towing plate 1, wearing plate 2, pin disk
3 and towing pin 4, towing plate 1 is T-type metal plate, is equipped with first through hole 11 among the square end of towing plate 1, surrounds first through hole
11 several equally distributed countersunks 12 of setting；1 surface of towing plate also sets up several countersunk holes 13.
Wearing plate 2 is rectangular metal sheet, and wearing plate 2 is located at the lower section of 1 square end of towing plate, correspondence the on wearing plate 2
The position of one through-hole 11 is equipped with aperture through-hole, and the position that countersunk 12 is corresponded on wearing plate 2 also is provided with through-hole, and in through-hole
Diameter is greater than 12 diameter of countersunk.The position that countersunk hole 13 is corresponded on wearing plate 2 is equipped with aperture, and tapping is equipped with flange 21.
Counter-sunk screw 7 is after flange 21 and countersunk hole 13 by wearing plate 2 and towing plate 1 and the fixed company of traction body frame (not shown)
It connects.
Pin disk 3 is fixedly connected with 1 upper surface of towing plate, is sold and is equipped with circular pegs disk cover 31 closed at one end among disk 3, and disk is sold
Lid 31 raises upward, and sells and is uniformly provided with several second through-holes 34 on 31 edge of disk cover.Pin 31 bottom level of disk cover extends outward
One circle ring flange 32, is uniformly distributed several third through-holes 35 on ring flange 32, on 35 position of third through-hole and 12 position of countersunk
Lower correspondence.32 bottom surface of ring flange is extended with bulge loop 33 downward vertically, and 33 inner wall of bulge loop and pin disk cover 31 form interior cylindrical cavity 36.It is convex
33 outer wall of ring and 11 clearance fit of first through hole can play positioning action, mitigate the ring flange that pin disk 3 is contacted with towing plate 1
Shearing abrasion on 32 bottom surfaces.
Second bolt and nut component 6 sequentially passes through flange 21, countersunk 12 and third through-hole 35 from top to bottom, by wearing plate
2, towing plate 1 is fixedly connected with pin disk 3.In the structure, it is provided with wearing plate 2, wearing plate 2 is placed on to the lower section of towing plate 1, is had
Effect prevents aluminium alloy towing plate 1 from directly contacting generation abrasion with traction seat；Flanging bore is provided on wearing plate 2 simultaneously, is utilized
Towing plate 1 is fixed on vehicle frame by counter-sunk screw 7, connector is not further added by, to avoid further increasing cost and weight.
It is provided with circular stationary plane 41 above towing pin 4, stationary plane 41 and interior 36 inner wall clearance fit of cylindrical cavity can be with
It plays the role of positioning, the shearing alleviated on pin disk 3 and 4 contact surface of towing pin is worn.41 edge of stationary plane, which is provided with, to be uniformly distributed
Several internal thread through hole 42, internal thread through hole 42 is corresponding with 34 position of the second through-hole, and is passed through by the first bolt and nut component 5
Wear connection.41 lower end surface center of stationary plane is equipped with cylindrical pin 43, and 43 circumference of pin is equipped with groove 44, groove 44 and extension
Traction seat (not shown) rotation connection on vehicle/semitrailer.
In the automobile-used aluminium alloy traction component of the trailer/semi-mounted, the material of towing plate 1 and pin disk 3 is 2 ×××s/6 ××s
The ××× high-strength aluminum alloy material of ×/7, for towing plate 1 with a thickness of 10~15mm, pin 3 overall thickness of disk is 20~50mm.With steel
Part is compared, and light weight effect is obvious.Wearing plate 2 is wear-resisting steel material, with a thickness of 1~5mm.Towing pin 4 is the steelwork of standard.
First bolt and nut component 5 and the second bolt and nut component 6 are stud nut combination, and one section of screw thread and spiral shell is arranged in stud free end
Mother screws fixation.
According to the novel aluminum alloy traction component of the embodiment above design, simulation, which calculates, is used for 45 feet of trailers, carries
Weigh 40 tons.In the case where being bent operating condition, 1 maximum stress of towing plate is 150MPa, and pin 3 maximum stress of disk is 166MPa；It is reversed in the limit
Under operating condition, 1 maximum stress of towing plate is 163MPa, and pin 3 maximum stress of disk is 192MPa, and stress level is bent far below aluminium alloy
Intensity is taken, actual operation requirements are met.
Wearing plate 2 when in use, is placed on towing plate 1 by the automobile-used aluminium alloy traction component of trailer/semi-mounted of the embodiment
Pin disk 3 is placed on 1 top of towing plate, corresponding threaded hole, countersunk 12 is directed at, with the second bolt and nut component 6 under by lower section
It is supreme that wearing plate 2, towing plate 1 and pin disk 3 is fixed；Again from 3 bottom of pin disk, 5 fixed traction pin 4 of the first bolt and nut component
With pin disk 3.In actual use, it is fixed with counter-sunk screw 7 by towing plate 1 and with traction body frame, by the groove of 4 lower end of towing pin
44 are rotatablely connected with the traction seat on trailer/semitrailer.
Finally, it should be noted that embodiments of the present invention are explained in detail above in conjunction with attached drawing, it is clear that description
Embodiment is only a specific embodiment of the invention, the embodiment being not all of.Above-described embodiment be it is illustrative, no
Be it is restrictive, cannot be limited the scope of protection of the present invention with following embodiments.But the present invention is not limited to above-mentioned implementations
Mode can arbitrarily change in the reasonable scope.It within the knowledge of a person skilled in the art, can also be
Other many variations are made under the premise of not departing from present inventive concept.
Claims (6)
1. a kind of automobile-used aluminium alloy traction component of trailer/semi-mounted, which is characterized in that including towing plate (1), wearing plate (2), pin disk
(3) and towing pin (4), the towing plate (1) are T-type metal plate, are equipped with first through hole among the square end of towing plate (1)
(11), several equally distributed countersunks (12) are set around first through hole (11)；Towing plate (1) surface is also uniformly arranged several
Countersunk hole (13)；
The wearing plate (2) is rectangular metal sheet, and wearing plate (2) is located at the lower section of towing plate (1) square end, wearing plate (2)
The position of upper corresponding first through hole (11) is equipped with aperture through-hole, and the position that countersunk (12) is corresponded on wearing plate (2) is also set
There is through-hole, and through-hole internal diameter is greater than countersunk (12) diameter；The position that countersunk hole (13) is corresponded on wearing plate (2), which is equipped with, opens
Hole, and tapping is equipped with flange (21)；Counter-sunk screw (7) after flange (21) and countersunk hole (13) by wearing plate (2) and
Towing plate (1) is fixedly connected with traction body frame；
The pin disk (3) is fixedly connected with towing plate (1) upper surface, and circular pegs disk cover closed at one end is equipped among pin disk (3)
(31), the pin disk cover (31) raises upward, and sells and is uniformly provided with several second through-holes (34) on disk cover (31) edge；Sell disk cover
(31) bottom level extends outward a circle ring flange (32), is uniformly distributed several third through-holes on the ring flange (32)
(35), third through-hole (35) position is corresponding up and down with countersunk (12) position；Ring flange (32) bottom surface extends downward vertically
Have bulge loop (33), bulge loop (33) inner wall and pin disk cover (31) form interior cylindrical cavity (36)；Bulge loop (33) outer wall and first leads to
Hole (11) clearance fit, the second bolt and nut component (6) sequentially pass through countersunk (12) and third through-hole (35) from top to bottom, will
Towing plate (1) is fixedly connected with pin disk (3)；
It is provided with circular stationary plane (41) above the towing pin (4), the stationary plane (41) and interior cylindrical cavity (36) inner wall
Clearance fit, stationary plane (41) edge are provided with equally distributed several internal thread through hole (42), the internal thread through hole (42)
It is corresponding with the second through-hole (34) position, and by the first bolt and nut component (5) through connection；Stationary plane (41) lower end surface center
Equipped with cylindrical pin (43), pin (43) circumference is equipped with groove (44), on the groove (44) and trailer/semitrailer
Traction seat rotation connection.
2. the automobile-used aluminium alloy traction component of trailer/semi-mounted described in accordance with the claim 1, which is characterized in that the towing plate (1)
Material with pin disk (3) is 2 ×××s/6 ×××s/7 ××× high-strength aluminum alloy materials.
3. the automobile-used aluminium alloy traction component of trailer/semi-mounted according to claim 2, which is characterized in that the towing plate (1)
With a thickness of 10~15mm, pin disk (3) overall thickness is 20~50mm.
4. the automobile-used aluminium alloy traction component of trailer/semi-mounted described in accordance with the claim 1, which is characterized in that the wearing plate (2)
For wear-resisting steel material.
5. the automobile-used aluminium alloy traction component of trailer/semi-mounted according to claim 4, which is characterized in that the wearing plate (2)
With a thickness of 1~5mm.
6. the automobile-used aluminium alloy traction component of trailer/semi-mounted described in accordance with the claim 1, which is characterized in that the towing pin (4)
For standard steel product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811237985.4A CN109130731A (en) | 2018-10-22 | 2018-10-22 | A kind of automobile-used aluminium alloy traction component of trailer/semi-mounted |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811237985.4A CN109130731A (en) | 2018-10-22 | 2018-10-22 | A kind of automobile-used aluminium alloy traction component of trailer/semi-mounted |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109130731A true CN109130731A (en) | 2019-01-04 |
Family
ID=64809141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811237985.4A Pending CN109130731A (en) | 2018-10-22 | 2018-10-22 | A kind of automobile-used aluminium alloy traction component of trailer/semi-mounted |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109130731A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8325942D0 (en) * | 1982-10-22 | 1983-11-02 | Fischer Ag Georg | Fifth wheel kingpin |
| EP0507342A1 (en) * | 1991-04-04 | 1992-10-07 | ROCKINGER Spezialfabrik für Anhängerkupplungen GmbH & Co. | Fifth wheel traction coupling with a supply of grease for the locking zone |
| US5671938A (en) * | 1995-06-20 | 1997-09-30 | Olson; Brian R. | Implement hitch |
| DE102006012153A1 (en) * | 2006-03-10 | 2007-09-13 | Jost-Werke Gmbh | King pin fastener for use in trailer of articulated vehicle, has king pin plate screwed-on into trailer plate through threaded holes, and reinforcing plate on upper side of trailer plate and welded circumferentially around king pin plate |
| DE502004006620D1 (en) * | 2003-11-21 | 2008-04-30 | Walter Hunger | CLUTCH PLATE OF A SADDLE CLUTCH |
| CN209320611U (en) * | 2018-10-22 | 2019-08-30 | 中铝国际物流（天津）有限公司 | A kind of automobile-used aluminium alloy traction component of trailer/semi-mounted |
-
2018
- 2018-10-22 CN CN201811237985.4A patent/CN109130731A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8325942D0 (en) * | 1982-10-22 | 1983-11-02 | Fischer Ag Georg | Fifth wheel kingpin |
| EP0507342A1 (en) * | 1991-04-04 | 1992-10-07 | ROCKINGER Spezialfabrik für Anhängerkupplungen GmbH & Co. | Fifth wheel traction coupling with a supply of grease for the locking zone |
| US5671938A (en) * | 1995-06-20 | 1997-09-30 | Olson; Brian R. | Implement hitch |
| DE502004006620D1 (en) * | 2003-11-21 | 2008-04-30 | Walter Hunger | CLUTCH PLATE OF A SADDLE CLUTCH |
| DE102006012153A1 (en) * | 2006-03-10 | 2007-09-13 | Jost-Werke Gmbh | King pin fastener for use in trailer of articulated vehicle, has king pin plate screwed-on into trailer plate through threaded holes, and reinforcing plate on upper side of trailer plate and welded circumferentially around king pin plate |
| CN209320611U (en) * | 2018-10-22 | 2019-08-30 | 中铝国际物流（天津）有限公司 | A kind of automobile-used aluminium alloy traction component of trailer/semi-mounted |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190104 |
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| WD01 | Invention patent application deemed withdrawn after publication |