CN107348914B - A kind of carpet removing dust and clearing ash device - Google Patents
A kind of carpet removing dust and clearing ash device Download PDFInfo
- Publication number
- CN107348914B CN107348914B CN201710636588.3A CN201710636588A CN107348914B CN 107348914 B CN107348914 B CN 107348914B CN 201710636588 A CN201710636588 A CN 201710636588A CN 107348914 B CN107348914 B CN 107348914B
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- Prior art keywords
- fixedly connected
- dust
- wall
- cabinet
- symmetrical
- Prior art date
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- 239000000428 dust Substances 0.000 title claims abstract description 21
- 238000003825 pressing Methods 0.000 claims description 10
- 238000009423 ventilation Methods 0.000 claims description 7
- 238000013016 damping Methods 0.000 claims description 5
- 239000011521 glass Substances 0.000 claims description 5
- 230000008602 contraction Effects 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 abstract description 15
- 239000013618 particulate matter Substances 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 8
- 210000000515 tooth Anatomy 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
- A47L11/32—Carpet-sweepers
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
- A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
- A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
- A47L11/4036—Parts or details of the surface treating tools
Landscapes
- Filtering Of Dispersed Particles In Gases (AREA)
- Cleaning In General (AREA)
Abstract
The invention discloses a kind of carpet removing dust and clearing ash devices, including cabinet, the inner wall top center of cabinet is fixedly connected with symmetrical electric telescopic rod, electric telescopic rod bottom is rotatably connected to clamping device by rotary connector, cabinet wall two sides are fixedly connected with symmetrical dust-proof motor case, dust-proof motor chamber interior wall is fixedly connected with first motor, first motor side is rotatably connected to belt pulley by output shaft, belt pulley is rotatably connected to external rotary sleeve by belt, and belt through dust-proof motor chamber interior wall and extends to outside dust-proof motor case, the present invention relates to household cleaning technical field of auxiliary equipment.The carpet removing dust and clearing ash device, the clean purpose of rotary high pressure jet is reached, the problem of keeping cleaning more comprehensively perfect, and a large amount of dusts and particulate matter by supporting filter screen to generate when having reached absorption cleaning, preventing the dust shaken off and particulate matter from air secondary being caused to pollute.
Description
Technical field
The present invention relates to household cleaning technical field of auxiliary equipment, specially a kind of carpet removing dust and clearing ash device.
Background technique
In actual life, family, shop, public place, public place of entertainment, spilling shop and kitchen etc., place can all exist because entering and leaving
Personnel's sole and object bottom carry dirt and keep floor tacky, thus need to spend human and material resources for keeping cleaning,
In the prior art, the puzzlement of spot is brought to reduce pedestrian to floor, often uses carpet or baking type dust-extraction unit, carpet
Although economical and practical, do not need to consume energy substantially, often move and move when cleaning, it is time-consuming and laborious, sometimes due to
Long-time is not cleaned or if weather rains always, water is unable to get on carpet and cleans out, when water is more long-pending
When more, then carpet just loses clean effect, for the cleaning for guaranteeing carpet, carpet is frequently necessary to replacement cleaning, but mesh
Preceding usual way is to be rolled into a roll carpet, is transplanted on cleaning place later and opens and cleaned again, after the completion of cleaning again
Carpet being rolled into a roll to, the above way undoubtedly considerably increases the clean treatment process of carpet and cost in case next time uses, and
Affect the cleaning efficiency of carpet.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of carpet removing dust and clearing ash device, existing carpet is solved
The problem of cleaning device use is more troublesome, and the dust shaken off on carpet be easy to cause air secondary to pollute.
In order to achieve the above object, the present invention is achieved by the following technical programs:
The inner wall top center of a kind of carpet removing dust and clearing ash device, including cabinet, the cabinet is fixedly connected with phase
Mutual symmetrical electric telescopic rod, the electric telescopic rod bottom is rotatably connected to clamping device, the case by rotary connector
Internal wall two sides are fixedly connected with symmetrical dust-proof motor case, and the dust-proof motor chamber interior wall is fixedly connected with the first electricity
Machine, the first motor side are rotatably connected to belt pulley by output shaft, and the belt pulley is rotatably connected to outer by belt
Portion's rotary sleeve, and the belt through dust-proof motor chamber interior wall and extends to outside dust-proof motor case, the cabinet wall two
Side and it is located at below dust-proof motor case and is fixedly connected with symmetrical inside fixing axle, and the external rotary sleeve inner wall
It is rotatablely connected with internal fixing axle, the external rotary sleeve side is fixedly connected with rotating disk, and the rotating disk side is fixed
It is connected with symmetrical compressed-air atomizer, is fixedly connected with below the cabinet wall two sides and internally positioned fixing axle
There is air compressor, the air compressor side is connected to by snorkel with internal fixing axle, the internal fixing axle and pressure
Contracting air nozzle connection, the inner wall two sides of the cabinet and be located at air compressor below be fixedly connected with support filter screen,
The support filter screen bottom centre position is fixedly connected with the second motor, and second motor bottom is rotatably connected to air draft
Fan, the bottom of box offer exhaust outlet.
The clamping device includes support frame, and the support frame bottom offers sliding slot, the support frame bottom and is located at
Sliding slot inner wall slidably connects symmetrical sliding block, and the opposite side of two sliding blocks is fixedly connected with contraction spring, described
The bottom of sliding block is fixedly connected with clamping riser, and the opposite side of the two clamping risers has been respectively fixedly connected with anti-skidding clip tooth,
Two slider tops and be located at support frame inside be rotatably connected to rotating bar, the two rotation top portions are not fixedly connected
On same fixed rotating block, pressing lever is fixedly connected at the top of the fixed rotating block, and the pressing lever runs through support frame
And extend to outside support frame, the pressing lever is fixedly connected with briquetting far from the side of fixed rotating block.
Preferably, the two sides of the bottom of the cabinet are fixedly connected with symmetrical shock-absorbing support leg, and the damping branch
Support leg inner wall is provided with damping spring.
Preferably, the surface of the cabinet is rotatably connected to chamber door by hinge, and the chamber door surface is fixedly connected with
Observe glass.
Preferably, the exhaust outlet inner wall is provided with ventilation and protection net, and the ventilation and protection net is set as honeycomb knot
Structure.
The present invention provides a kind of carpet removing dust and clearing ash devices.Have it is following the utility model has the advantages that
(1), the carpet removing dust and clearing ash device is fixedly connected with rotating disk, rotating disk one by external rotary sleeve side
Side is fixedly connected with compressed-air atomizer, and cabinet wall two sides are fixedly connected with air compressor, and air compressor side passes through
Snorkel is connected to internal fixing axle, and internal fixing axle is connected to compressed-air atomizer, and it is clean to have reached rotary high pressure jet
Purpose, and by the asynchronous up and down motion of two identical electric telescopic rods, dirty woollen blanket can be made to swing, having reached makes to clean
Clean purpose is improved more comprehensively.
(2), the carpet removing dust and clearing ash device is fixedly connected with support filter screen by the inner wall two sides of cabinet, supported
Filter screen bottom center is fixedly connected with the second motor, and the second motor bottom is rotatably connected to exhaust fan, and the bottom of box opens up
There is exhaust outlet, reached a large amount of dusts and particulate matter generated when absorption cleaning, prevents the dust shaken off from causing air secondary dirty
The problem of dye.
Detailed description of the invention
Fig. 1 is structure of the invention schematic internal view；
Fig. 2 is the structural schematic diagram of clamping device of the present invention；
Fig. 3 is the structural schematic diagram outside the present invention.
In figure: 1 cabinet, 2 electric telescopic rods, 3 rotary connectors, 4 clamping devices, 401 support frames, 402 sliding slots, 403 are slided
Block, 404 contraction springs, 405 clamping risers, 406 anti-skidding clip tooths, 407 rotating bars, 408 fixed rotating blocks, 409 pressing levers, 410
Briquetting, 5 dust-proof motor casees, 6 first motors, 7 belt pulleys, 8 belts, 9 outside rotary sleeves, 10 inside fixing axles, 11 rotations
Disk, 12 compressed-air atomizers, 13 air compressors, 14 snorkels, 15 support filter screens, 16 second motors, 17 exhaust fans, 18 rows
Air port, 19 shock-absorbing support legs, 20 damping springs, 21 hinges, 22 chamber doors, 23 observation glass, 24 ventilation and protection nets.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-3 is please referred to, the present invention provides a kind of technical solution:
The inner wall top center of a kind of carpet removing dust and clearing ash device, including cabinet 1, cabinet 1 is fixedly connected with mutually
Symmetrical electric telescopic rod 2,2 bottom of electric telescopic rod are rotatably connected to clamping device 4, clamping device 4 by rotary connector 3
Facilitate and clamp dirty woollen blanket, 1 inner wall two sides of cabinet are fixedly connected with symmetrical dust-proof motor case 5, and 5 inner wall of dust-proof motor case is solid
Surely it is connected with first motor 6, dust-proof motor case 5 prevents first motor 6 because dust causes to damage, and 6 side of first motor passes through defeated
Shaft is rotatably connected to belt pulley 7, and belt pulley 7 is rotatably connected to external rotary sleeve 9 by belt 8, and belt 8 is through dust-proof
5 inner wall of motor housing simultaneously extends to outside dust-proof motor case 5, the fixed company in 1 inner wall two sides of cabinet and the lower section for being located at dust-proof motor case 5
It is connected to symmetrical inside fixing axle 10, and external 9 inner wall of rotary sleeve and internal fixing axle 10 are rotatablely connected, outside rotation
9 side of axle sleeve is fixedly connected with rotating disk 11, and 11 side of rotating disk is fixedly connected with symmetrical compressed-air atomizer 12, case
1 inner wall two sides of the body and lower section of internally positioned fixing axle 10 is fixedly connected to air compressor 13,13 side of air compressor
It is connected to by snorkel 14 with internal fixing axle 10, internal fixing axle 10 is connected to compressed-air atomizer 12, the inner wall two of cabinet 1
Side and be located at air compressor 13 lower section be fixedly connected with support filter screen 15, support filter screen 15 absorb generate dust and
Particle, support 15 bottom centre position of filter screen are fixedly connected with the second motor 16, and 16 lower rotation of the second motor is connected with row
Fan 17,1 bottom of cabinet offer exhaust outlet 18, and 18 inner wall of exhaust outlet is provided with ventilation and protection net 24, and ventilation and protection net 24
It is set as honeycomb structure, the two sides of the bottom of cabinet 1 are fixedly connected with symmetrical shock-absorbing support leg 19, and shock-absorbing support leg
19 inner walls are provided with damping spring 20, and the surface of cabinet 1 is rotatably connected to chamber door 22 by hinge 21, and 22 surface of chamber door is fixed
It is connected with observation glass 23, observation glass 23 facilitates observation cleaning situation.
Clamping device 4 includes support frame 401, and 401 bottom of support frame offers sliding slot 402,401 bottom of support frame and is located at
402 inner wall of sliding slot slidably connects symmetrical sliding block 403, and the opposite side of two sliding blocks 403 is fixedly connected with contraction spring
404, the bottom of sliding block 403 is fixedly connected with clamping riser 405, and the opposite side of two clamping risers 405 has been respectively fixedly connected with
Anti-skidding clip tooth 406, the top of two sliding block 403 and is located inside support frame 401 and is rotatably connected to rotating bar 407, two rotating bars 407
Top is fixedly connected on respectively on same fixed rotating block 408, is fixedly connected with pressing lever 409 at the top of fixed rotating block 408, and
Pressing lever 409 is through support frame 401 and extends to outside support frame 401, side of the pressing lever 409 far from fixed rotating block 408
It is fixedly connected with briquetting 410.
In use, opening chamber door 22, briquetting 410 is pinned, dirty woollen blanket is put into the opposite side of two clamping risers 405,
Briquetting 410 is unclamped, the inside Slideslip of riser 405 is clamped, is tangled dirty woollen blanket by anti-skidding clip tooth 406, first motor 6 drives
Rotating disk 11 rotates, and pressure-air is delivered to compressed-air atomizer 12 by air compressor 13, compressed-air atomizer 12 sprays
High pressure gas out carries out drifting dust processing to dirty woollen blanket, and by the two asynchronous up and down motions of identical electric telescopic rod 2, can be with
So that dirty woollen blanket is swung, keeps cleaning more comprehensive.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions.By sentence " element limited including one ..., it is not excluded that
There is also other identical elements in the process, method, article or apparatus that includes the element ".
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (4)
1. a kind of carpet removing dust and clearing ash device, including cabinet (1), it is characterised in that:
The inner wall top center of the cabinet (1) is fixedly connected with symmetrical electric telescopic rod (2), described electronic to stretch
Contracting bar (2) bottom is rotatably connected to clamping device (4) by rotary connector (3), and cabinet (1) the inner wall two sides are fixedly connected
There is symmetrical dust-proof motor case (5), dust-proof motor case (5) inner wall is fixedly connected with first motor (6), and described first
Motor (6) side is rotatably connected to belt pulley (7) by output shaft, and the belt pulley (7) is rotatably connected to outer by belt (8)
Portion's rotary sleeve (9), and the belt (8) through dust-proof motor case (5) inner wall and extends to dust-proof motor case (5) outside；
Cabinet (1) the inner wall two sides and it is located at below dust-proof motor case (5) and is fixedly connected with symmetrical inside and fixes
Axis (10), and external rotary sleeve (9) inner wall and internal fixing axle (10) are rotatablely connected, the external rotary sleeve (9)
Side is fixedly connected with rotating disk (11), and rotating disk (11) side is fixedly connected with symmetrical compressed-air atomizer
(12), air compressor (13) are fixedly connected to below cabinet (1) the inner wall two sides and internally positioned fixing axle (10),
Air compressor (13) side be connected to by snorkel (14) with internal fixing axle (10), it is described inside fixing axle (10) and
Compressed-air atomizer (12) connection；
The inner wall two sides of the cabinet (1) and be located at air compressor (13) below be fixedly connected with support filter screen (15),
Support filter screen (15) bottom centre position is fixedly connected with the second motor (16), the second motor (16) lower rotation
It is connected with exhaust fan (17), cabinet (1) bottom offers exhaust outlet (18)；
The clamping device (4) includes support frame (401), and support frame (401) bottom offers sliding slot (402), the branch
Support frame (401) bottom and be located at sliding slot (402) inner wall slidably connect symmetrical sliding block (403), two sliding blocks (403)
Opposite side is fixedly connected with contraction spring (404), and the bottom of the sliding block (403) is fixedly connected with clamping riser (405),
The opposite side of two clampings riser (405) has been respectively fixedly connected with anti-skidding clip tooth (406), at the top of two sliding blocks (403)
And be located inside support frame (401) and be rotatably connected to rotating bar (407), it is fixed respectively at the top of two rotating bars (407) to connect
It connects on same fixed rotating block (408), is fixedly connected with pressing lever (409) at the top of the fixed rotating block (408), and described
Pressing lever (409) is through support frame (401) and extends to support frame (401) outside, and the pressing lever (409) is far from fixed rotation
The side of block (408) is fixedly connected with briquetting (410).
2. a kind of carpet removing dust and clearing ash device according to claim 1, it is characterised in that: the bottom two of the cabinet (1)
Side is fixedly connected with symmetrical shock-absorbing support leg (19), and the shock-absorbing support leg (19) inner wall is provided with damping spring
(20)。
3. a kind of carpet removing dust and clearing ash device according to claim 1, it is characterised in that: the surface of the cabinet (1) is logical
It crosses hinge (21) to be rotatably connected to chamber door (22), and the chamber door (22) surface is fixedly connected with observation glass (23).
4. a kind of carpet removing dust and clearing ash device according to claim 1, it is characterised in that: exhaust outlet (18) inner wall is set
It is equipped with ventilation and protection net (24), and the ventilation and protection net (24) is set as honeycomb structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710636588.3A CN107348914B (en) | 2017-07-31 | 2017-07-31 | A kind of carpet removing dust and clearing ash device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710636588.3A CN107348914B (en) | 2017-07-31 | 2017-07-31 | A kind of carpet removing dust and clearing ash device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107348914A CN107348914A (en) | 2017-11-17 |
| CN107348914B true CN107348914B (en) | 2019-09-24 |
Family
ID=60284919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710636588.3A Active CN107348914B (en) | 2017-07-31 | 2017-07-31 | A kind of carpet removing dust and clearing ash device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107348914B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108057666A (en) * | 2017-12-07 | 2018-05-22 | 合肥市春华起重机械有限公司 | A kind of environment-friendly dustless quantitative cleaning equipment |
| CN108888201B (en) * | 2018-06-28 | 2020-10-09 | 乐清市梦依轩居室用品有限公司 | Square ground mat rotation type cleaning equipment is used to house |
| CN108914525B (en) * | 2018-09-06 | 2021-10-15 | 广东聚晨知识产权代理有限公司 | Quick belt cleaning device of carpet |
| CN109349960B (en) * | 2018-10-30 | 2020-09-01 | 宁波市晶隆电子商务有限公司 | Hand-push type carpet dust remover |
| CN113680140B (en) * | 2021-08-12 | 2022-07-26 | 安徽南国冷热综合能源有限公司 | Air conditioner filter screen dust removal device and dust removal method thereof |
| CN113857153B (en) * | 2021-11-21 | 2023-07-21 | 湖南玖芯光电科技有限公司 | Optical fiber end face cleaning method and equipment |
| CN114700319B (en) * | 2022-03-15 | 2024-03-26 | 滨州市宏诺新材料有限公司 | Automatic soot blower of electrolytic aluminum bus frame |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2451424Y (en) * | 2000-10-26 | 2001-10-03 | 谢志国 | Surface impurity cleaning machine |
| JP2008136957A (en) * | 2006-12-04 | 2008-06-19 | Masanori Shimoda | Mat sweeping machine |
| CN105193347A (en) * | 2015-08-25 | 2015-12-30 | 罗杰芝 | Dust removal device for carpet |
| CN205134053U (en) * | 2015-11-04 | 2016-04-06 | 天津巨越地毯有限公司 | Surperficial tufting processing apparatus of carpet |
| CN205436009U (en) * | 2016-04-05 | 2016-08-10 | 哈尔滨理工大学 | Electrostatic dust removing device |
| CN206350709U (en) * | 2016-08-28 | 2017-07-25 | 天津吉象地毯有限公司 | A kind of adjustable carpet dust elimination machine |
-
2017
- 2017-07-31 CN CN201710636588.3A patent/CN107348914B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2451424Y (en) * | 2000-10-26 | 2001-10-03 | 谢志国 | Surface impurity cleaning machine |
| JP2008136957A (en) * | 2006-12-04 | 2008-06-19 | Masanori Shimoda | Mat sweeping machine |
| CN105193347A (en) * | 2015-08-25 | 2015-12-30 | 罗杰芝 | Dust removal device for carpet |
| CN205134053U (en) * | 2015-11-04 | 2016-04-06 | 天津巨越地毯有限公司 | Surperficial tufting processing apparatus of carpet |
| CN205436009U (en) * | 2016-04-05 | 2016-08-10 | 哈尔滨理工大学 | Electrostatic dust removing device |
| CN206350709U (en) * | 2016-08-28 | 2017-07-25 | 天津吉象地毯有限公司 | A kind of adjustable carpet dust elimination machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107348914A (en) | 2017-11-17 |
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Effective date of registration: 20190829 Address after: Hangzhou City, Zhejiang province Fuyang District 311404 Dong Qiao Zhen virtuous Ruan Cun Ren Applicant after: HANGZHOU FUYANG YONNGFU MACHINE Co.,Ltd. Address before: 230000 Private Science Park, Hefei Economic and Technological Development Zone, Anhui Province Applicant before: HEFEI ENTENG ELECTRONIC TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20240805 Address after: Unit D01, 3rd Floor, Block D, Wangjing Industrial Building, 2 Dayou Street, San Po Kong, Kowloon, Hong Kong, China Patentee after: British Commercial Carpet Co.,Ltd. Country or region after: Hong-Kong Address before: 214000 Huishan Avenue 108-4-1511-1, Huishan District, Wuxi City, Jiangsu Province (Subway Xizhang Station Area) Patentee before: Jiangsu Hengda Yongxin Enterprise Management Co.,Ltd. Country or region before: China |
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