CN108756546A - Electromagnetism door-inhale - Google Patents
Electromagnetism door-inhale Download PDFInfo
- Publication number
- CN108756546A CN108756546A CN201810361675.7A CN201810361675A CN108756546A CN 108756546 A CN108756546 A CN 108756546A CN 201810361675 A CN201810361675 A CN 201810361675A CN 108756546 A CN108756546 A CN 108756546A
- Authority
- CN
- China
- Prior art keywords
- door
- permanent magnetism
- inhale
- tube body
- bearing spring
- 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.)
- Granted
Links
- 230000005389 magnetism Effects 0.000 claims abstract description 53
- 230000003068 static effect Effects 0.000 claims abstract description 31
- 230000005294 ferromagnetic effect Effects 0.000 claims abstract description 18
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 12
- 230000005672 electromagnetic field Effects 0.000 claims abstract description 6
- 230000005611 electricity Effects 0.000 claims 1
- 230000005291 magnetic effect Effects 0.000 abstract description 12
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 241001122767 Theaceae Species 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
- E05C17/00—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith
- E05C17/56—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by magnetic or electromagnetic attraction or operated by electric or electromagnetic means
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
- E05F1/08—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings
- E05F1/10—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance
- E05F1/1041—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance with a coil spring perpendicular to the pivot axis
- E05F1/105—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance with a coil spring perpendicular to the pivot axis with a compression spring
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
- E05Y2900/13—Type of wing
- E05Y2900/132—Doors
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
- Closing And Opening Devices For Wings, And Checks For Wings (AREA)
Abstract
The present invention provides a kind of electromagnetism door-inhale, including pedestal；Pedestal includes end plate and permanent magnetism tube body；The battery cavities for loading battery are equipped in permanent magnetism tube body；Battery cavities are externally provided with the solenoid coaxial with permanent magnetism tube body；Permanent magnetism tube body outer cover is equipped with bearing spring, and the outer end for supporting spring connects a ferromagnetic suction cap；Solenoidal one end is electrically connected with the battery cathode in battery cavities, and the other end is electrically connected to the moving contact of ferromagnetic suction cap inner end；The outer end of permanent magnetism tube body is equipped with the static contact to match with moving contact, in the state that the door-inhale column at door body rear is attracted naturally by electromagnetism door-inhale, has interval between moving contact and static contact；Static contact is electrically connected the anode in battery cavities；After a distance is inwardly compressed in bearing spring, moving contact, static contact contact with each other, and solenoid is switched at this time, and generate the electromagnetic field cancelled out each other with the permanent magnetic field of permanent magnetism tube body.The electromagnetism door-inhale can easily discharge the door body being sucked.
Description
The application is the divisional application of the patent application of entitled electromagnetism door-inhale application No. is 2017106221622.
Technical field
The present invention relates to house decoration articles for use fields, particularly, are related to a kind of door-inhale.
Background technology
Door-inhale is the basic accessory of current household timber, for making the timber of open state be fixed on by wall displacement.Due to
Current door-inhale is made of permanent magnet, has stable magnetic attraction to door body, therefore after door body is sucked, it needs to spend larger
Strength could pull open door body from door-inhale, more painstaking for child；And in the moment pulled open, due to magnetic attraction
It die-offs, is easy to make body generation significantly to rock, be easy to cause wrestling or the excessive situation of tea in this case.
Invention content
In view of the above-mentioned problems, the purpose of the present invention is to provide a kind of electromagnetism door-inhale, which can easily release
Put the door body being sucked.
The first technical solution is used by the present invention solves its technical problem：The electromagnetism door-inhale includes being fixed on vertically
The pedestal of wall；The pedestal includes end plate and one section of permanent magnetism tube body extended horizontally forward from end plate；In the permanent magnetism tube body
Equipped with the battery cavities for loading battery；The battery cavities are externally provided with the solenoid coaxial with permanent magnetism tube body；Outside the permanent magnetism tube body
It is arranged with bearing spring, the outer end of the bearing spring connects a ferromagnetic suction cap coaxial with the permanent magnetism tube body；The spiral shell
One end of spool is electrically connected with the battery cathode in the battery cavities, and the other end is electrically connected to institute by the bearing spring
State the moving contact of ferromagnetic suction cap inner end；The outer end of the permanent magnetism tube body is equipped with the static contact to match with the moving contact, in door
In the state that the door-inhale column at body rear is attracted naturally by the electromagnetism door-inhale, there is interval between the moving contact and static contact；
The static contact is electrically connected the anode in the battery cavities；It is described after a distance is inwardly compressed in the bearing spring
Moving contact, static contact contact with each other, and the solenoid is switched at this time, and generate and mutually supported with the permanent magnetic field of the permanent magnetism tube body
The electromagnetic field to disappear.
Preferably, the ferromagnetic outer end for inhaling cap forms cavity, in order to coordinate with the door-inhale column at door body rear.
Preferably, the moving contact includes one section of power spring extended to the permanent magnetism tube body, at door body rear
Door-inhale column be attracted naturally by the electromagnetism door-inhale in the state of, have between the free end of the power spring and the static contact
There is interval.
The advantageous effect of the first above-mentioned technical solution is that, when opening the door, the not magnetic door-inhale column in door body rear leans on
When the nearly electromagnetism door-inhale, is attracted by the permanent magnetism tube body, make door-inhale capital on the ferromagnetic suction cap, and make magnetic attraction
Reach balance with the elastic force of the bearing spring；And needing at closing time, only door body need to further be promoted to metope, until institute
The moving contact for stating ferromagnetic suction cap inner end contacts with each other with permanent magnetism tube body outer end static contact, at this point, the solenoid is switched on, it is described
Permanent magnetism tube body is unmagnetized；And after letting go at this time, the bearing spring will provide a bounce to door body, and door body is able in elastic force
Effect is lower far from electromagnetism door-inhale；Due to during so that door body is left wall, being not in the phenomenon that pulling force is die-offed, therefore not
Substantially rocking for body can be caused, and overcomes the magnetic attraction of permanent magnetism tube body compared with great strength without consumption, it is seen then that the electromagnetism door-inhale
The door body being sucked can easily be discharged.
The present invention solves second of technical solution used by its technical problem：The electromagnetism door-inhale includes being fixed on vertically
The pedestal of wall；The pedestal includes end plate and one section of permanent magnetism tube body extended horizontally forward from end plate；In the permanent magnetism tube body
Equipped with the battery cavities for loading battery；The permanent magnetism tube body outer cover is equipped with bearing spring, and the spring silk table face of the bearing spring is set
There is insulating layer；The outer end of the bearing spring connects a ferromagnetic suction cap coaxial with the permanent magnetism tube body；The bearing spring
One end and the battery cavities in battery cathode be electrically connected, the other end, which is electrically connected to, described ferromagnetic to be inhaled the dynamic of cap inner end and touches
Head；The outer end of the permanent magnetism tube body is equipped with the static contact to match with the moving contact, and the door-inhale column at door body rear is described
In the state that electromagnetism door-inhale is attracted naturally, there is interval between the moving contact and static contact；The static contact is electrically connected institute
State the anode in battery cavities；After a distance is inwardly compressed in the bearing spring, the moving contact, static contact phase mutual connection
It touches, the bearing spring is switched at this time, constitutes inductance coil by the bearing spring itself, and generate and the permanent magnetism tube body
The opposite electromagnetic field of permanent magnetism field direction.
Preferably, the bearing spring also concatenates current-limiting resistance.
Preferably, the moving contact includes one section of power spring extended to the permanent magnetism tube body, at door body rear
Door-inhale column be attracted naturally by the electromagnetism door-inhale in the state of, have between the free end of the power spring and the static contact
There is interval.
Above-mentioned second of technical solution is compared with the first technical solution, directly by the bearing spring instead of described
Solenoid makes structure more simplify stabilization.
Description of the drawings
Fig. 1 is the schematic diagram of this electromagnetism door-inhale embodiment one.
Fig. 2 is the schematic diagram of this electromagnetism door-inhale embodiment two.
Fig. 3 is the schematic diagram of this electromagnetism door-inhale embodiment one.
Specific implementation mode
Present invention will be further explained below with reference to the attached drawings and examples：
Embodiment one：
In embodiment one shown in Fig. 1, which includes the pedestal for being fixed on vertical wall；The pedestal includes end plate
11 and one section of permanent magnetism tube body 12 extended horizontally forward from end plate；The battery cavities for loading battery are equipped in the permanent magnetism tube body 12
120；The battery cavities 120 are externally provided with the solenoid 13 coaxial with permanent magnetism tube body 12；12 outer cover of permanent magnetism tube body is equipped with branch
Spring 2 is held, the outer end of the bearing spring 2 connects a ferromagnetic suction cap 3 coaxial with the permanent magnetism tube body 12；The solenoid
13 one end is electrically connected with the battery cathode in the battery cavities 120, and the other end is electrically connected to by the bearing spring 2
The ferromagnetic moving contact 311 for inhaling 3 inner end of cap；The outer end of the permanent magnetism tube body 12, which is equipped with, to match with the moving contact 311
Static contact 111, the door-inhale column at door body rear（It is not shown）In the state of being attracted naturally by the electromagnetism door-inhale, the moving contact
There is interval between 311 and static contact 111；The static contact 111 is electrically connected the anode in the battery cavities 120；Institute
State bearing spring 2 a distance is inwardly compressed after, the moving contact 311, static contact 111 contact with each other, at this time the solenoid
13 are switched on, and generate the electromagnetic field cancelled out each other with the permanent magnetic field of the permanent magnetism tube body 12.
Above-mentioned electromagnetism door-inhale, the ferromagnetic outer end for inhaling cap 3 forms cavity, in order to match with the door-inhale column at door body rear
It closes.
Above-mentioned electromagnetism door-inhale, when opening the door, when the not magnetic door-inhale column in door body rear is close to the electromagnetism door-inhale, by
To the attraction of the permanent magnetism tube body 12, make door-inhale capital on the ferromagnetic suction cap 3, and make magnetic attraction and the bearing spring 2
Elastic force reach balance；And needing at closing time, only door body need to further be promoted to metope, until in the ferromagnetic suction cap 3
The moving contact 311 at end contacts with each other with 12 outer end static contact 111 of permanent magnetism tube body, at this point, the solenoid 13 is switched on, it is described forever
Magnetic tube body 12 is unmagnetized；And after letting go at this time, the bearing spring 2 will provide a bounce to door body, and door body is able in bullet
Far from electromagnetism door-inhale under force effect；Due to during so that door body is left wall, being not in the phenomenon that pulling force is die-offed, therefore
Substantially rocking for body will not be caused, and overcomes the magnetic attraction of permanent magnetism tube body compared with great strength without consumption, it is seen then that the electromagnetic door
Suction can easily discharge the door body being sucked.
Embodiment two：
For embodiment two shown in Fig. 2, with embodiment one the difference is that：The moving contact 311 includes one section
The power spring 3111 extended to the permanent magnetism tube body 12；What the door-inhale column at door body rear was attracted naturally by the electromagnetism door-inhale
Under state, there is interval between the free end of the power spring 3111 and the static contact 111.In view of drawing is clear in Fig. 2
Sub-fraction bearing spring 2 is omitted in clear degree.
The advantageous effect of embodiment two is, during door body leaves wall under the elastic force effect for supporting spring 2, is in
The power spring 3111 of compressive state gradually stretch by rebound, so that the turn-on time of static contact 111 and moving contact 311 substantially carries
Door body more effectively can be pushed away metope by height to make the bounce suffered by door body substantially extend.
Embodiment three：
In embodiment three shown in Fig. 3, which includes the pedestal for being fixed on vertical wall；The pedestal includes end plate
11 and one section of permanent magnetism tube body 12 extended horizontally forward from end plate 11；The battery cavities for loading battery are equipped in the permanent magnetism tube body 12
120；12 outer cover of permanent magnetism tube body is equipped with bearing spring 2, and the spring silk table face of the bearing spring 2 is equipped with insulating layer；It is described
The outer end for supporting spring 2 connects a ferromagnetic suction cap 3 coaxial with the permanent magnetism tube body 12；It is described bearing spring 2 one end with
Battery cathode in the battery cavities 120 is electrically connected, and the other end is electrically connected to the ferromagnetic moving contact for inhaling 3 inner end of cap
311；The outer end of the permanent magnetism tube body 12 is equipped with the static contact 111 to match with the moving contact 311, the door-inhale at door body rear
In the state that column is attracted naturally by the electromagnetism door-inhale, there is interval between the moving contact 311 and static contact 111；It is described quiet
Contact 111 is electrically connected the anode in the battery cavities 120；It is described after a distance is inwardly compressed in the bearing spring 2
Moving contact 311, static contact 111 contact with each other, and the bearing spring 2 is switched at this time, and inductance is constituted in itself by the bearing spring 2
Coil, and generate the electromagnetic field opposite with the permanent magnetism field direction of the permanent magnetism tube body 12.In addition, the bearing spring 2 can be with
A current-limiting resistance is concatenated, to prevent exciting current excessive.
As embodiment two, the moving contact 311 includes one section of power spring extended to the permanent magnetism tube body 12
3111, in the state that the door-inhale column at door body rear is attracted naturally by the electromagnetism door-inhale, the freedom of the power spring 3111
There is interval between end and the static contact 111.
Embodiment three is directly made by the bearing spring 2 instead of the solenoid 13 compared with embodiment one, two
Structure more simplifies stabilization.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, made by any modification, equivalent replacement, should all be included in the protection scope of the present invention.
Claims (3)
1. a kind of electromagnetism door-inhale, which includes the pedestal for being fixed on vertical wall；The pedestal includes end plate（11）And
One section of permanent magnetism tube body extended horizontally forward from end plate（12）；It is characterized in that：The permanent magnetism tube body（12）Interior be equipped with loads electricity
The battery cavities in pond（120）；The permanent magnetism tube body（12）Outer cover is equipped with bearing spring（2）, the bearing spring（2）Spring silk table
Face is equipped with insulating layer；The bearing spring（2）Outer end connect one with the permanent magnetism tube body（12）Coaxial ferromagnetic suction cap
（3）；The bearing spring（2）One end and the battery cavities（120）Interior battery cathode is electrically connected, and the other end is electrically connected
To the ferromagnetic suction cap（3）The moving contact of inner end（311）；The permanent magnetism tube body（12）Outer end be equipped with and the moving contact
（311）The static contact to match（111）, in the state that the door-inhale column at door body rear is attracted naturally by the electromagnetism door-inhale, institute
State moving contact（311）With static contact（111）Between have interval；The static contact（111）It is electrically connected the battery cavities（120）
Interior anode；The bearing spring（2）After a distance is inwardly compressed, the moving contact（311）, static contact（111）Phase
It mutually contacts, at this time the bearing spring（2）It is switched on, by the bearing spring（2）Itself constitute inductance coil, and generate with it is described
Permanent magnetism tube body（12）The opposite electromagnetic field of permanent magnetism field direction.
2. electromagnetism door-inhale according to claim 1, it is characterised in that：The bearing spring（2）Also concatenate current-limiting resistance.
3. electromagnetism door-inhale according to claim 1, it is characterised in that：The moving contact（311）It include one section to described
Permanent magnetism tube body（12）The power spring of extension（3111）, shape that the door-inhale column at door body rear is attracted naturally by the electromagnetism door-inhale
Under state, the power spring（3111）Free end and the static contact（111）Between have interval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810361675.7A CN108756546B (en) | 2017-07-27 | 2017-07-27 | Electromagnetic door stopper |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710622162.2A CN107178264B (en) | 2017-07-27 | 2017-07-27 | Electromagnetism door-inhale |
| CN201810361675.7A CN108756546B (en) | 2017-07-27 | 2017-07-27 | Electromagnetic door stopper |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710622162.2A Division CN107178264B (en) | 2017-07-27 | 2017-07-27 | Electromagnetism door-inhale |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108756546A true CN108756546A (en) | 2018-11-06 |
| CN108756546B CN108756546B (en) | 2020-05-05 |
Family
ID=59837840
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810361675.7A Active CN108756546B (en) | 2017-07-27 | 2017-07-27 | Electromagnetic door stopper |
| CN201710622162.2A Active CN107178264B (en) | 2017-07-27 | 2017-07-27 | Electromagnetism door-inhale |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710622162.2A Active CN107178264B (en) | 2017-07-27 | 2017-07-27 | Electromagnetism door-inhale |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN108756546B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110696947B (en) * | 2019-08-27 | 2020-07-17 | 范叶哲 | Sharing bicycle strorage device |
| CN111502452B (en) * | 2020-05-07 | 2021-09-21 | 抚州天成门业有限公司 | Intelligent anti-collision door stopper |
| CN113153038A (en) * | 2021-04-23 | 2021-07-23 | 南京航空航天大学 | Embedded door stop limiter and control method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3161756U (en) * | 2010-01-06 | 2010-08-12 | 株式会社サンライズ | magnet catch |
| CN202718496U (en) * | 2012-05-22 | 2013-02-06 | 无锡商业职业技术学院 | Variable magnetic force attracting and closing device |
| CN203822011U (en) * | 2014-04-10 | 2014-09-10 | 汪阳 | Novel variable magnetic door stopper |
| US9051764B1 (en) * | 2012-06-21 | 2015-06-09 | Amazon Technologies, Inc. | Internal rotational locking mechanism |
| CN205206541U (en) * | 2015-11-10 | 2016-05-04 | 黄礼洪 | Electromagnetism door -inhale |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5125010Y2 (en) * | 1971-10-26 | 1976-06-25 | ||
| CN1514099A (en) * | 2002-08-28 | 2004-07-21 | 付明生 | Linear multidirection semi circule side clump block slide way type multifunction opening and closing device for door and window |
| AT503949B1 (en) * | 2006-03-08 | 2008-02-15 | Blum Gmbh Julius | LOCKING AND OPENING DEVICE FOR A FURNITURE STORED ON A FURNITURE |
| CN201047215Y (en) * | 2007-06-01 | 2008-04-16 | 陈敏 | No-spacing slide moving door magnetic suction device |
| CN201254907Y (en) * | 2008-08-01 | 2009-06-10 | 林世亮 | Bounce magnet door knocker |
-
2017
- 2017-07-27 CN CN201810361675.7A patent/CN108756546B/en active Active
- 2017-07-27 CN CN201710622162.2A patent/CN107178264B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3161756U (en) * | 2010-01-06 | 2010-08-12 | 株式会社サンライズ | magnet catch |
| CN202718496U (en) * | 2012-05-22 | 2013-02-06 | 无锡商业职业技术学院 | Variable magnetic force attracting and closing device |
| US9051764B1 (en) * | 2012-06-21 | 2015-06-09 | Amazon Technologies, Inc. | Internal rotational locking mechanism |
| CN203822011U (en) * | 2014-04-10 | 2014-09-10 | 汪阳 | Novel variable magnetic door stopper |
| CN205206541U (en) * | 2015-11-10 | 2016-05-04 | 黄礼洪 | Electromagnetism door -inhale |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107178264B (en) | 2018-08-03 |
| CN107178264A (en) | 2017-09-19 |
| CN108756546B (en) | 2020-05-05 |
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Effective date of registration: 20200330 Address after: 512026 room 704, block A2, 13 Yanjiang Road, Wujiang District, Shaoguan, Guangdong. Applicant after: Hu Shuangzhen Address before: Room 2107, Wuzhong Mall Building, 388 Dongwu South Road, Suzhou City, Jiangsu Province, 215000 Applicant before: Zhao Yaqin |
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Effective date of registration: 20201110 Address after: Shop 3, first floor, building 9-11, Huayuan new village, Xinhua South Road, Wujiang District, Shaoguan City, Guangdong Province Patentee after: Shaoguan Kade Environmental Protection Technology Co., Ltd Address before: 512026 room 704, block A2, 13 Yanjiang Road, Wujiang District, Shaoguan, Guangdong. Patentee before: Hu Shuangzhen |
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Effective date of registration: 20210312 Address after: 512026 room 704, block A2, 13 Yanjiang Road, Wujiang District, Shaoguan, Guangdong. Patentee after: Hu Shuangzhen Address before: 512026 shop 3, first floor, building 9-11, Huayuan new village, Xinhua South Road, Wujiang District, Shaoguan City, Guangdong Province Patentee before: Shaoguan Kade Environmental Protection Technology Co., Ltd |
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