CN104315127B - Gear-box breather and using method thereof - Google Patents
Gear-box breather and using method thereof Download PDFInfo
- Publication number
- CN104315127B CN104315127B CN201410511889.XA CN201410511889A CN104315127B CN 104315127 B CN104315127 B CN 104315127B CN 201410511889 A CN201410511889 A CN 201410511889A CN 104315127 B CN104315127 B CN 104315127B
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- Prior art keywords
- gear
- base
- box
- buffer container
- bent sub
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- 238000000034 method Methods 0.000 title claims description 20
- 210000002445 nipple Anatomy 0.000 claims abstract description 15
- 230000007246 mechanism Effects 0.000 claims abstract description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 206010061258 Joint lock Diseases 0.000 description 1
- 241000406668 Loxodonta cyclotis Species 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003519 ventilatory effect Effects 0.000 description 1
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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/027—Gearboxes; Mounting gearing therein characterised by means for venting gearboxes, e.g. air breathers
-
- 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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0402—Cleaning of lubricants, e.g. filters or magnets
- F16H57/0404—Lubricant filters
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
Present invention is disclosed a kind of gear-box breather, including buffer gear and bindiny mechanism, described buffer gear includes buffer container, the main body of described buffer container includes outer wall and is enclosed the inner chamber set by described outer wall, it is provided with two coaxial bases, the respectively first base and the second base in described main body, described first base is provided with a Ventilated cap, described second base is connected with described bindiny mechanism, and described buffer container is fixedly installed on car body；Described bindiny mechanism is a hose assembly, described hose assembly includes rubber hose, described rubber hose two ends are connected to pipe joint, and described pipe joint is connected to the first bent sub and the second bent sub, and described first bent sub is connected with the nipple being fixed on pouring orifice on gear-box；Described second bent sub is connected with described second base.Present invention achieves oiling, ventilate, calculate volume read-out, prevent the combination of each functions such as oil spilling, ensure that the globality of gear-box simultaneously.
Description
Technical field
The present invention relates to a kind of gear-box breather, especially a kind of by ventilation, refuel, survey volume read-out, prevent from overflowing
The gear-box breather that the function of oil combines.
Background technology
There are some gear-boxes at present, by being respectively provided with passage, vernier at body side and being provided above at casing
Pouring orifice realizes ventilation respectively, refuels and measure the effect of oil mass, but these arrange the globality being difficult to ensure that gear-box,
And passage is arranged on casing, because gear-box rotating speed is big, interior oil hydraulic coupling is big, often easily occurs leakage of oil at passage
Phenomenon；The vernier additionally arranged on gear-box is not easy to observed data, simultaneously because the limited space that gear-box is installed,
When needs refuel or change fluid, do not have enough spaces directly to refuel above casing, and set owing to lacking buffering
Put, the problem that fluid overflows easily occurs during oiling；The globality of gear-box to be ensured in real work, has bigger
Working strength, and processing cost is high.
Summary of the invention
The defect existed in view of above-mentioned prior art, the purpose of the present invention is to propose to a kind of easy to use, highly versatile,
Low cost of manufacture, it is achieved refuel, several functions of ventilating combines and can guarantee that the gear-box breather of gear-box globality.
The purpose of the present invention will be achieved by the following technical programs:
A kind of gear-box breather, for gear-box ventilation, use of refueling, including buffer gear and bindiny mechanism；
Described buffer gear includes that a buffer container, the main body of described buffer container include that outer wall and being enclosed by described outer wall sets
Inner chamber, described main body is provided with two coaxial bases, the respectively first base and the second base, described first base
On be provided with a Ventilated cap, described second base is connected with described bindiny mechanism, and described buffer container is fixedly installed on car body
On；Described bindiny mechanism is a hose assembly, and described hose assembly includes that a rubber hose, described rubber hose two ends are divided
Lian Jie not have a pipe joint, described pipe joint is connected to the first bent sub and the second bent sub, described first bent sub
It is connected with being fixed on the nipple of pouring orifice on gear-box；Described second bent sub is connected with described second base.
Preferably, described gear-box breather, wherein: the main body of described buffer container includes two welded together
Individual end socket, forms outer wall and enclosed the inner chamber set by described outer wall, and the top and bottom coaxial welding of described main body has described the
It is provided with screwed hole on one base and described second base, described first base and described second base.
Preferably, described gear-box breather, wherein: described buffer container main body is hollow cylinder, rectangular
One in body or square.
Preferably, described gear-box breather, wherein: the left and right sides of described main body be symmetrically welded with two for
The base plate that described buffer container is fastenedly connected on car body.
Preferably, described gear-box breather, wherein: on described first base, be additionally provided with transfer block, described turn
Connect block include cylinder the seat of honour and lower seat, the center of the described seat of honour and lower seat be one axially through pipeline, the described seat of honour
Edge is axially evenly equipped with three through screw holes；The side at the described seat of honour is evenly equipped with three locking holes, described three lockings
Kong Yusan screw hole is crisscross arranged；The external screw thread matched with described first base screwed hole it is provided with on described lower seat,
Described transfer block is connected with described first base by described external screw thread.
Preferably, described gear-box breather, wherein: described Ventilated cap is the one in cleaner or filter screen, institute
State cleaner or filter screen to be fixedly connected in described transfer block by described screw hole and screw.
Preferably, described gear-box breather, wherein: also include that flow meters, described effusion meter are arranged at described
On the passage of the first base.
Preferably, described gear-box breather, wherein: described pipe joint and rubber hose are fastened by pipe clamp or spiral shell
The mode lock ring of bolt fastening is together.
The using method of a kind of gear-box breather, comprises the steps:
Step one: hose assembly connection procedure: by described rubber hose and said two pipe joint, the first bent sub, second curved
Joint and two pipe clamps are assembled into hose assembly, wherein use described pipe clamp by described rubber hose and described pipe joint lock ring
Together, described first bent sub, the second bent sub are fastenedly connected with two described pipe joints respectively；
Step 2: buffer container connection procedure: by three locking holes on spanner and transfer block, transfer block is securedly mounted to
On first base of buffer container, effusion meter is installed in the first base passage then, by three screws, by filtering
Device is arranged in transfer block；
Step 3: hose assembly and gear-box connection procedure: copper washer is enclosed within above nipple, and nipple is fastened
It is connected on gear-box, the first bent sub is connected with nipple, the second bent sub and the second base are connected.
Step 4: buffer container and car body connection procedure: by the bolt hole on buffer container base plate, by two spiral shells
Buffer container is arranged on car body by bolt and spring washer, thus is installed by whole breather and put in place.
The invention has the beneficial effects as follows:
Owing to arranging said apparatus, form a filling passage, can directly be refueled by the cleaner on vehicle body, it is to avoid with
Toward the process that need to be disassembled by gear-box when refueling, it is very easy to refuel；This passage also realizes inside and outside casing simultaneously
The connection of portion's gas, it is possible to balance gear roller box inside and outside portion pressure differential, makes gear-box have good sealing, prevents out
Existing gear-box internal pressure is excessive and causes the phenomenon of casing leakage of oil；Owing to container is placed on upper gear case, it is possible to prevent tooth
The oil spilling phenomenon that box high speed causes more greatly due to fluid internal pressure when running, simultaneous buffering container has bigger inner chamber,
When being also possible to prevent to refuel, flow is excessive occurs that fluid overflows, and plays cushioning effect.It addition, arrange effusion meter in base
It is easy to calculate volume read-out, it is thus achieved that ventilatory function, add functional oil, survey volume read-out and prevent the knot of each functions such as oil spilling
Close, simultaneously because these functions are realized by a device, it is ensured that the overall structure of gear-box.
Foreign matter can either be avoided to enter inside casing by arranging cleaner or filter screen, simultaneously can be by added fluid
Contaminant filter fall, it is ensured that box house clean environment；
The buffer container made by the way of welding, its highly versatile, production cost are low, and can exchange between each parts,
Production cost can either be saved, there is again the wider scope of application.
Below with reference to Figure of description, the detailed description of the invention of the present invention is described in further detail, so that skill of the present invention
Art scheme is easier to understand, grasps.
Accompanying drawing explanation
Fig. 1 is gear-box breather installation diagram of the present invention；
Fig. 2 is buffer container front view of the present invention；
Fig. 3 is buffer container sectional view of the present invention；
Fig. 4 is the top view of transfer block of the present invention；
Fig. 5 is the sectional view of transfer block of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Whole description, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.
Based on embodiments of the invention, it is all that those of ordinary skill in the art are obtained under not making creative work premise
Other embodiments, broadly fall into the scope of protection of the invention.
A kind of gear-box breather in the present embodiment, shown in Fig. 1～Fig. 5, including a buffer container 8, institute
The main body stating buffer container 8 is the one in hollow cylinder, cuboid or square, and described main body includes being welded on
Two end socket 8-4 together.
The left and right sides of described main body is symmetrically welded with two base plate 8-2, and said two base plate 8-2 respectively has a spiral shell
Keyhole 8-5, described buffer container 8 is fastened on car by described bolt hole 8-5, two bolts 13 and two spring washers 14
On body 12, and described buffer container 8 is fixed on the position higher than described gear-box 1, the position of car body 12.
The top and bottom coaxial welding of described main body have the first base 8-3 and the second base 8-6, described first base 8-3 and
It is provided with screwed hole on described second base 8-6.
In this preferred embodiment, the first base 8-3, the second base 8-6, base plate 8-2, end socket 8-4 are all welded,
In figure, 8-1 is pad.So can be substantially reduced manufacturing cost.
Being provided with flow meters 16 in described first base 8-3 passage, described effusion meter 16 is used for calculating volume read-out.Stream
Gauge 16 is prior art, repeats no more.Being additionally provided with transfer block 11 on described first base, described transfer block 11 is wrapped
Include cylindrical seat of honour 11-4 and lower seat 11-5, the center of described seat of honour 11-4 and lower seat 11-5 be one axially through pipeline
11-6, described seat of honour 11-4 axial edge is evenly equipped with three through screw hole 11-1；The side of described seat of honour 11-4 is equal
It is furnished with three locking hole 11-2, described three locking hole 11-2 and three screw hole 11-1 to be crisscross arranged；Described lower seat 11-5
Being provided with the external screw thread 11-3 matched with described first base 8-3 screwed hole on surface, described transfer block 11 is by lower seat
On external screw thread 11-3 be connected with described first base 8-3.Connect in described transfer block 11 and have a cleaner or filter screen 9,
Described cleaner or filter screen 9 are fixedly connected in described transfer block 11 with screw 10 by described screw hole 11-1.
Present invention additionally comprises a hose assembly, described hose assembly includes a rubber hose 7, the length of described rubber hose 7
Degree, more than the air line distance between described nipple 3 and described second base 8-6, leaves certain surplus, to ensure
After connection, described rubber hose 7 remains to maintain certain dilatability, prevents vehicle from rubber hose 7 being pulled apart in jolting.
Described rubber hose 7 two ends are connected to a pipe joint 5, described pipe joint 5 and rubber hose 7 fastened by pipe clamp or
The mode lock ring of bolt fastening is together；Described pipe joint 5 is connected to the first bent sub 4-1 and the second bent sub 4-2,
Described first bent sub 4-1 is connected with the nipple 3 being fixed on pouring orifice on gear-box 1；Described second bent sub
4-2 is connected with described second base.Described nipple 3 is fixed on described gear-box 1 by copper washer 2.
After the present invention being connected with car body 12 and gear-box 1 in the manner described above, gear-box 1 is internal has certain pressure
Gas communicated with outside by this device, owing to the internal diameter (30mm～40mm) of rubber hose 7 is relatively big, gear-box
Pressure gas physical ability within 1 is discharged in extraneous gas in time, it is ensured that gear-box 1 internal and external pressure balance, improves it and seals
Property, it is to avoid at gear-box 1 at a high speed the most voluntarily or when hanging together, fluid agitation is too fast, causes internal pressure to increase, causes sealing
Oil spilling at circle, at air-vent.Simultaneously because the filtration of cleaner 9, the impurity in extraneous gas cannot be introduced into gear
Case 1 is internal, it is ensured that the cleaning within gear-box 1.
Additionally, this gear-box 1 breather provides and conveniently refuels path, when gear-box 1 fluid is not enough
Time, can directly fluid cleaner 9 from container be added, the impurity quilt with the help of cleaner 9, in fluid
Filter out, it is ensured that the cleaning in gear-box 1；In refueling process, be positioned at the effusion meter 16 of the first base 8-3 with
The fluid amount that Shi Jilu adds, when oiling excessive velocities, the fluid in rubber hose 7 has little time to fully enter gear-box 1
In, now owing to being provided with buffer container 8, under the cushioning effect of buffer container 8, it is to avoid in refueling process, oil spilling is existing
The appearance of elephant.
The using method of a kind of gear-box breather in the present embodiment, comprises the steps:
Step one: hose assembly connection procedure: by described rubber hose and said two pipe joint the 5, first bent sub 4-1, the
Two bent sub 4-2 and two pipe clamps 6 are assembled into hose assembly, wherein use described pipe clamp 6 by described rubber hose 7 with
Described first bent sub 4-1, the second bent sub 4-2, are connect by described pipe joint 5 lock ring respectively with two described pipes together
5 are fastenedly connected；
Step 2: buffer container connection procedure: by three locking hole 11-2 on spanner and transfer block 11, by tight for transfer block 11
Guan County is contained on the first base 8-3 of buffer container 8, is installed on by effusion meter 16 in first base 8-3 passage, then,
By three screws 10, cleaner 9 is arranged in transfer block 11；
Step 3: hose assembly and gear-box connection procedure: copper washer 2 is enclosed within above nipple 3, and by nipple 3
It is fastenedly connected on gear-box 1, the first bent sub 4-1 is connected with nipple 3, by the second bent sub 4-2 and second
Base 8-6 connects.
Step 4: buffer container and car body connection procedure: by the bolt hole 8-5 on buffer container base plate 8-2, pass through
Buffer container 8 is arranged on car body 12 by two bolts 13 and spring washer 14, thus is installed to by whole breather
Position.
The present invention is not limited to aforementioned embodiments, and those skilled in the art are under the enlightenment of the technology of the present invention marrow, also
Other changes may be made, but as long as its function realized is same or similar with the present invention, the protection of the present invention all should be belonged to
Scope.
Claims (9)
1. a gear-box breather, ventilates for gear-box (1), refuels use, it is characterised in that: include buffer gear and bindiny mechanism；Described buffer gear includes a buffer container (8), the main body of described buffer container (8) includes outer wall and is enclosed the inner chamber set by described outer wall, two coaxial bases it are provided with in described main body, it is respectively the first base (8-3) and the second base (8-6), it is provided with a Ventilated cap on described first base (8-3), described second base (8-6) is connected with described bindiny mechanism, and described buffer container (8) is fixedly installed on car body (12)；Described bindiny mechanism is a hose assembly, described hose assembly includes a rubber hose (7), described rubber hose (7) two ends are connected to a pipe joint (5), described pipe joint (5) is connected to the first bent sub (4-1) and the second bent sub (4-2), and described first bent sub (4-1) is connected with the nipple (3) being fixed on pouring orifice on gear-box (1)；Described second bent sub (4-2) is connected with second base (8-6) of described buffer gear.
2. according to the gear-box breather described in claim 1, it is characterized in that: the main body of described buffer container (8) includes two end sockets (8-4) welded together, form outer wall and enclosed the inner chamber set by described outer wall, the top and bottom coaxial welding of described main body has described first base (8-3) and described second base (8-6), and described first base (8-3) and described second base (8-6) are provided with screwed hole.
3. according to the gear-box breather described in claim 2, it is characterised in that: described buffer container main body is the one in hollow cylinder, cuboid or square.
4. according to the gear-box breather described in claim 3, it is characterised in that: the left and right sides of described main body is symmetrically welded with two for the base plate (8-2) being fastenedly connected on car body (12) by described buffer container (8).
5. according to the gear-box breather described in claim 1, it is characterized in that: on described first base (8-3), be additionally provided with transfer block (11), described transfer block (11) includes the seat of honour (11-4) and the lower seat (11-5) of cylinder, the center of the described seat of honour and lower seat be one axially through pipeline (11-6), the described seat of honour (11-6) edge is axially evenly equipped with three through screw holes (11-1)；The side at the described seat of honour (11-4) is evenly equipped with three locking holes (11-2), and described three locking holes (11-2) are crisscross arranged with three screw holes (11-1)；Being provided with the external screw thread (11-3) matched with described first base (8-3) screwed hole on described lower seat, described transfer block (11) is connected with described first base (8-3) by described external screw thread (11-3).
6. according to the gear-box breather described in claim 5, it is characterized in that: described Ventilated cap is the one in cleaner or filter screen, described cleaner or filter screen are fixedly connected in described transfer block (11) by described screw hole (11-1) and screw (10).
7. according to the gear-box breather described in claim 5, it is characterised in that: also include that flow meters (16), described effusion meter (16) are arranged on the passage of described first base (8-3).
8. according to the gear-box breather described in claim 1, it is characterised in that: described pipe joint (5) is fastened or by the way of bolt fastening together with lock ring by pipe clamp (6) with rubber hose (7).
9. according to the using method of the gear-box breather described in claim 1, it is characterised in that comprise the steps:
Step one: hose assembly connection procedure: described rubber hose (7) is assembled into hose assembly with two pipe joints (5), the first bent sub (4-1), the second bent sub (4-2) and two pipe clamps (6), wherein use described pipe clamp (6) by described rubber hose (7) together with described pipe joint (5) lock ring, described first bent sub (4-1), the second bent sub (4-2) are fastenedly connected with two described pipe joints (5) respectively；
Step 2: buffer container connection procedure: by three locking holes (11-2) on spanner and transfer block (11), transfer block (11) is securedly mounted on first base (8-3) of buffer container (8), effusion meter (16) is installed in the first base (8-3) passage, then, by three screws (10), cleaner (9) is arranged in transfer block (11)；
Step 3: hose assembly and gear-box connection procedure: copper washer (2) is enclosed within nipple (3) above, and nipple (3) is fastenedly connected on gear-box (1), first bent sub (4-1) is connected with nipple (3), the second bent sub (4-2) is connected with the second base (8-6)；
Step 4: buffer container and car body connection procedure: by the bolt hole (8-5) on buffer container base plate (8-2), by two bolts (13) and spring washer (14), buffer container (8) is arranged on car body (12), thus whole breather is installed and puts in place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410511889.XA CN104315127B (en) | 2014-09-29 | 2014-09-29 | Gear-box breather and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410511889.XA CN104315127B (en) | 2014-09-29 | 2014-09-29 | Gear-box breather and using method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104315127A CN104315127A (en) | 2015-01-28 |
| CN104315127B true CN104315127B (en) | 2016-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410511889.XA Active CN104315127B (en) | 2014-09-29 | 2014-09-29 | Gear-box breather and using method thereof |
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| CN (1) | CN104315127B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486453B (en) * | 2019-06-27 | 2023-05-05 | 安徽省锦瑞汽车部件有限公司 | Ventilation plug capable of meeting wading requirement of automobile |
| CN111120633A (en) * | 2020-01-06 | 2020-05-08 | 东风柳州汽车有限公司 | Automatic speed changer breather pipe |
| US11920670B2 (en) * | 2021-07-12 | 2024-03-05 | Custom Performance, L.L.C. | Vented transmission cover |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11251736A (en) * | 1998-02-27 | 1999-09-17 | Hitachi Ltd | Heating device |
| JP5143161B2 (en) * | 2010-03-03 | 2013-02-13 | ジヤトコ株式会社 | Transmission air breather mechanism |
| CN102954191B (en) * | 2011-08-30 | 2016-02-24 | 常州市瑞泰工程机械有限公司 | Walking gear box body of railway vehicle |
| CN203098810U (en) * | 2012-12-25 | 2013-07-31 | 天津力神电池股份有限公司 | Reducer oil change device for maintenance of coating machine |
| CN104048022B (en) * | 2013-03-12 | 2016-04-27 | 南车戚墅堰机车车辆工艺研究所有限公司 | Subway Gear Box casing |
| CN203442096U (en) * | 2013-08-30 | 2014-02-19 | 青岛郁金香机械有限公司 | Feed mixer truck reduction gearbox with observation device |
| CN204153115U (en) * | 2014-09-29 | 2015-02-11 | 常州市瑞泰工程机械有限公司 | Gear-box air-breather |
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Effective date of registration: 20161024 Address after: 213011 Wuyi Road, Qishuyan District, Jiangsu, China, No. 99, No. Patentee after: CHANGZHOU RUITAI ENGINEERING MACHINERY Co.,Ltd. Patentee after: CRRC QISHUYAN INSTITUTE Co.,Ltd. Address before: 213011 Wuyi Road, Qishuyan District, Jiangsu, China, No. 99, No. Patentee before: CHANGZHOU RUITAI ENGINEERING MACHINERY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 213011 No. 99, Wuyi Road, Qishuyan District, Changzhou City, Jiangsu Province Patentee after: Changzhou CRRC Ruitai Equipment Technology Co.,Ltd. Patentee after: CRRC QISHUYAN INSTITUTE Co.,Ltd. Address before: 213011 No. 99, Wuyi Road, Qishuyan District, Changzhou City, Jiangsu Province Patentee before: CHANGZHOU RUITAI ENGINEERING MACHINERY Co.,Ltd. Patentee before: CRRC QISHUYAN INSTITUTE Co.,Ltd. |
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Address after: 213011 No. 99, Wuyi Road, Qishuyan District, Changzhou City, Jiangsu Province Patentee after: Changzhou CRRC Ruitai Equipment Technology Co.,Ltd. Country or region after: China Patentee after: CRRC Qishuyan Locomotive and Rolling Stock Technology Research Institute Co.,Ltd. Address before: 213011 No. 99, Wuyi Road, Qishuyan District, Changzhou City, Jiangsu Province Patentee before: Changzhou CRRC Ruitai Equipment Technology Co.,Ltd. Country or region before: China Patentee before: CRRC QISHUYAN INSTITUTE Co.,Ltd. |
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