CN108131069B - Special vertical hinged door virtual mask device with bearing for architectural decoration - Google Patents

Special vertical hinged door virtual mask device with bearing for architectural decoration Download PDF

Info

Publication number
CN108131069B
CN108131069B CN201810152819.8A CN201810152819A CN108131069B CN 108131069 B CN108131069 B CN 108131069B CN 201810152819 A CN201810152819 A CN 201810152819A CN 108131069 B CN108131069 B CN 108131069B
Authority
CN
China
Prior art keywords
bearing
magnet
circular ring
positioning shaft
fork
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.)
Active
Application number
CN201810152819.8A
Other languages
Chinese (zh)
Other versions
CN108131069A (en
Inventor
欧阳刚
欧阳桦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chongqing Vocational College of Public Transportation
Original Assignee
Chongqing Vocational College of Public Transportation
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Chongqing Vocational College of Public Transportation filed Critical Chongqing Vocational College of Public Transportation
Priority to CN201810152819.8A priority Critical patent/CN108131069B/en
Publication of CN108131069A publication Critical patent/CN108131069A/en
Application granted granted Critical
Publication of CN108131069B publication Critical patent/CN108131069B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05CBOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C17/00Devices 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
    • E05C17/56Devices 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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Hinges (AREA)

Abstract

A special vertical hinged door virtual mask device with a bearing for building decoration comprises a main positioning plate, an auxiliary positioning plate, a magnet, a bearing, a screw, a door frame and a door leaf; the device is characterized in that a main locating plate through hole and a supporting rod are arranged on the main locating plate; the top end of the supporting rod is provided with a circular ring, and a magnet is arranged in the middle of the circular ring; the side face of the circular ring is provided with a bearing positioning shaft, and the bearing positioning shaft is provided with a bearing; the auxiliary positioning plate is provided with an auxiliary positioning plate through hole, a supporting rod and a fork head, and a fork opening is arranged in the middle of the fork head; the magnet is fixed in the circular ring, and two ends of the magnet protrude outwards; the diameter of the outer circle of the bearing on the bearing positioning shaft is smaller than the width of the fork opening; the height dimension of the magnet is smaller than the diameter dimension of the outer circle of the bearing on the bearing positioning shaft; the rubber ring is sleeved outside the bearing, so that the magnet can be prevented from not contacting the fork head, and the bearing has a mute function.

Description

Special vertical hinged door virtual mask device with bearing for architectural decoration
Technical Field
The invention relates to door and window hardware equipment, in particular to a vertical hinged door virtual masking device with a bearing special for architectural decoration.
Background
The staff in the office does not want to open the door greatly, because the former staff often can be distracted by the staff in the office, and the work efficiency of the staff in the office can be reduced when the door is opened greatly; if the door of the office is closed, normal communication between the personnel in the external office and the staff in the room is influenced; it is desirable to properly fix the door leaf of an office in a half-open position, and to open or close the door leaf when needed without being blown open or closed by wind, and such hardware fittings are required in the current building interior decoration industry.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a vertical hinged door virtual mask device with a bearing special for architectural decoration.
The technical scheme adopted by the invention is as follows: a special vertical hinged door virtual mask device with a bearing for building decoration comprises a main positioning plate, an auxiliary positioning plate, a magnet, a bearing, a screw, a door frame and a door leaf; the device is characterized in that a main locating plate through hole and a supporting rod are arranged on the main locating plate; the top end of the supporting rod is provided with a circular ring, and a magnet is arranged in the middle of the circular ring; the side face of the circular ring is provided with a bearing positioning shaft, and the bearing positioning shaft is provided with a bearing; the auxiliary positioning plate is provided with an auxiliary positioning plate through hole, a supporting rod and a fork head, and a fork opening is arranged in the middle of the fork head; the magnet is fixed in the circular ring, and two ends of the magnet protrude outwards; the diameter of the outer circle of the bearing on the bearing positioning shaft is smaller than the width of the fork opening; the height dimension of the magnet is smaller than the diameter dimension of the outer circle of the bearing on the bearing positioning shaft; the screws fix the main locating plate on the door frame through the through holes of the main locating plate; the screw fixes the auxiliary locating plate on the door leaf through the auxiliary locating plate through hole; the door frame is provided with a pressing strip which is used for limiting the closing position of the door leaf.
The fork opening can completely accommodate the annular bearing positioning shaft, the bearing positioning shaft and the bearings arranged on the bearing positioning shaft.
After the main locating plate and the auxiliary locating plate are respectively and correctly installed on the door frame and the door leaf, the ring and the bearing locating shaft on the main locating plate can not influence the opening and closing of the door leaf; when the main locating plate and the auxiliary locating plate are respectively and correctly installed on the door frame and the door leaf, the magnet and the bearing locating shaft installed in the circular ring and the bearing installed on the bearing locating shaft pass through the middle of the fork opening integrally; the fork head is made of a magneto-philic material, and when the whole magnet arranged in the circular ring passes through the middle of the fork opening, the magnet can generate attractive force to the fork head; when the whole magnet installed in the circular ring passes through the middle of the fork opening, the magnet cannot be contacted with any part of the fork head; when the magnet is too close to one of the prongs and excessive attraction occurs, the bearing will first touch the too close prong to prevent the magnet from contacting the prong.
By adopting the technical scheme of the invention, the method has the following beneficial effects:
1) The invention utilizes the performance of the magnet to make the door leaf virtually mask, which is beautiful and convenient;
2) The positioning part arranged on the door leaf can be attracted and prevent the door leaf from moving only when the positioning part is close to the positioning magnet, and the door leaf at other positions can not be restrained by the positioning device, so that the door leaf is free to use;
3) The invention is provided with the rotatable bearing, and the bearing can prevent the magnet from being completely contacted with the fork opening so as to prevent overlarge door opening or closing resistance; by adopting the design with the bearing, the magnet can be prevented from being contacted with the fork head, and even if the magnet with stronger magnetism is arranged in the circular ring for limiting, the door can still be opened or closed smoothly;
4) The rubber ring is sleeved outside the bearing, so that the magnet can be prevented from not contacting the fork head, and the bearing has a mute function.
Drawings
FIG. 1 is a perspective view of the present invention (the positioner is not mounted to the door frame, the magnet and bearing positioning shaft and the bearings on the bearing positioning shaft all enter the fork);
FIG. 2 is a perspective view of the present invention (the retainer is not mounted to the door frame, the magnet and bearing retainer shaft and the bearings on the bearing retainer shaft are not in the fork);
FIG. 3 is a schematic view of the invention in use (the positioner is mounted on the door frame of the door leaf, the magnet and the bearing positioning shaft and the bearing on the bearing positioning shaft enter the fork, the door leaf is in a virtual masking state);
fig. 4 is a schematic view of the use of the invention (with the positioner mounted on the door frame, the magnet and bearing positioning shaft and the bearing on the bearing positioning shaft disengaged from the fork, the door has been closed);
in the figure: 10-main locating plate, 11-main locating plate through hole, 12-supporting rod, 13-circular ring, 14-bearing locating shaft, 20-auxiliary locating plate, 21-auxiliary locating plate through hole, 22-supporting rod, 23-fork head, 24-fork mouth, 30-magnet, 40-bearing, 50-screw, 60-door frame, 61-pressing strip and 70-door leaf.
Detailed Description
The invention is further illustrated by the following figures and examples: as shown in fig. 1 to 4, a vertical hinged door virtual mask device with a bearing special for architectural decoration comprises a main positioning plate 10, an auxiliary positioning plate 20, a magnet 30, a bearing 40, a screw 50, a door frame 60 and a door leaf 70; the device is characterized in that a main positioning plate through hole 11 and a supporting rod 12 are arranged on the main positioning plate 10; the top end of the supporting rod 12 is provided with a circular ring 13, and a magnet 30 is arranged in the middle of the circular ring 13; the side surface of the circular ring 13 is provided with a bearing positioning shaft 14, and the bearing positioning shaft 14 is provided with a bearing 40; the auxiliary positioning plate 20 is provided with an auxiliary positioning plate through hole 21, a supporting rod 22 and a fork head 23, and a fork opening 24 is arranged in the middle of the fork head 23; the magnet 30 is fixed in the circular ring 13, and two ends of the magnet 30 protrude outwards; the diameter of the outer circle of the bearing 40 on the bearing positioning shaft 14 is smaller than the width of the fork opening 24; the height dimension of the magnet 30 is smaller than the outer diameter dimension of the bearing 40 on the bearing positioning shaft 14; the screw 50 fixes the main locating plate 10 on the door frame 60 through the main locating plate through hole 11; the screw 50 fixes the auxiliary locating plate 20 on the door leaf 70 through the auxiliary locating plate through hole 21; the door frame 60 is provided with a pressing bar 61, and the pressing bar 61 is used for limiting the closing position of the door leaf 70.
The fork 24 can completely accommodate the ring 13 and the bearing positioning shaft 14, and the bearing positioning shaft 14 and the bearing 40 arranged on the bearing positioning shaft 14.
When the main positioning plate 10 and the auxiliary positioning plate 20 are correctly installed on the door frame 60 and the door leaf 70 respectively, the ring 13 and the bearing positioning shaft 14 on the main positioning plate 10 do not influence the door leaf opening and closing; when the main positioning plate 10 and the auxiliary positioning plate 20 are correctly installed on the door frame 60 and the door leaf 70 respectively, the magnet 30 and the bearing positioning shaft 14 installed in the circular ring 13 and the bearing 40 installed on the bearing positioning shaft 14 pass through the middle of the fork opening 24 as a whole; the fork head 23 is made of a magneto-philic material, and when the whole magnet 30 arranged in the circular ring 13 passes through the middle of the fork opening 24, the magnet 30 can generate attractive force to the fork head 23; when the magnet 30 installed in the circular ring 13 integrally passes through the fork opening 24, the magnet 30 cannot contact any part of the fork head 23; when the magnet 30 comes too close to one of the prongs 23 and excessive attraction occurs, the bearing 40 will first touch the too close prong 23 to prevent the magnet 30 from contacting the prong 23.
The rubber ring is arranged outside the bearing of the embodiment, and the rubber ring does not make sound when touching the fork head 23.
The invention utilizes the performance of the magnet to make the door leaf virtually mask, which is beautiful and convenient; the positioning part arranged on the door leaf can be attracted and prevent the door leaf from moving only when the positioning part is close to the positioning magnet, and the door leaf at other positions can not be restrained by the positioning device, so that the door leaf is free to use; the invention is provided with the rotatable bearing, and the bearing can prevent the magnet from being completely contacted with the fork opening so as to prevent overlarge door opening or closing resistance; by adopting the design with the bearing, the magnet can be prevented from being completely contacted with the fork head, and even if the magnet with stronger magnetism is arranged in the circular ring for limiting, the door can still be smoothly opened or closed; the rubber ring is arranged outside the bearing, so that the mute effect is achieved.
The above examples of the present invention are illustrative of exemplary embodiments of the present invention and are not intended to be limiting of the embodiments of the present invention. Obvious variations that result from the prompts of the embodiments of the invention are still within the scope of the claims of the invention.

Claims (1)

1. The utility model provides a special vertical hinged door virtual mask device of taking bearing of architectural decoration, includes main locating plate (10), vice locating plate (20), magnet (30), bearing (40), screw (50), door frame (60), door leaf (70); the device is characterized in that a main locating plate through hole (11) and a supporting rod (12) are arranged on the main locating plate (10); the top end of the supporting rod (12) is provided with a circular ring (13), and a magnet (30) is arranged in the middle of the circular ring (13); the side surface of the circular ring (13) is provided with a bearing positioning shaft (14), and the bearing positioning shaft (14) is provided with a bearing (40); the outer ring of the bearing (40) is sleeved with a rubber ring, and has a mute function; the auxiliary positioning plate (20) is provided with an auxiliary positioning plate through hole (21) and a supporting rod (22), the supporting rod (22) is provided with a fork head (23), and a fork opening (24) is arranged in the middle of the fork head (23); the magnet (30) is fixed in the circular ring (13), and two ends of the magnet (30) protrude outwards; the diameter of the outer circle of the bearing (40) on the bearing positioning shaft (14) is smaller than the width of the fork opening (24); the height dimension of the magnet (30) is smaller than the outer circle diameter dimension of the bearing (40) on the bearing positioning shaft (14); the screw (50) fixes the main locating plate (10) on the door frame (60) through the main locating plate through hole (11); the screw (50) fixes the auxiliary locating plate (20) on the door leaf (70) through the auxiliary locating plate through hole (21); the door frame (60) is provided with a pressing strip (61), and the pressing strip (61) is used for limiting the closing position of the door leaf (70); the fork opening (24) can completely accommodate the ring (13) and the bearing positioning shaft (14) and the bearings (40) arranged on the bearing positioning shaft (14) and the bearing positioning shaft (14); after the main positioning plate (10) and the auxiliary positioning plate (20) are respectively and correctly installed on the door frame (60) and the door leaf (70), the ring (13) and the bearing positioning shaft (14) on the main positioning plate (10) can not influence the door leaf to be opened and closed; when the main positioning plate (10) and the auxiliary positioning plate (20) are respectively and correctly installed on the door frame (60) and the door leaf (70), the magnet (30) and the bearing positioning shaft (14) which are installed in the circular ring (13) and the bearing (40) which is installed on the bearing positioning shaft (14) pass through the middle of the fork opening (24) as a whole; the fork head (23) is made of a magneto-philic material, and when the whole magnet (30) arranged in the circular ring (13) passes through the middle of the fork opening (24), the magnet (30) can generate attractive force on the fork head (23); when the whole magnet (30) arranged in the circular ring (13) passes through the middle of the fork opening (24), the magnet (30) can not contact any part of the fork head (23), and even if the magnet with stronger magnetism is arranged in the circular ring for limiting, the door opening or closing can still be smooth; when the magnet (30) is too close to one of the prongs (23) and excessive attraction occurs, the bearing (40) will first touch the too close prong (23) to prevent the magnet (30) from contacting the prong (23).
CN201810152819.8A 2018-02-20 2018-02-20 Special vertical hinged door virtual mask device with bearing for architectural decoration Active CN108131069B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810152819.8A CN108131069B (en) 2018-02-20 2018-02-20 Special vertical hinged door virtual mask device with bearing for architectural decoration

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810152819.8A CN108131069B (en) 2018-02-20 2018-02-20 Special vertical hinged door virtual mask device with bearing for architectural decoration

Publications (2)

Publication Number Publication Date
CN108131069A CN108131069A (en) 2018-06-08
CN108131069B true CN108131069B (en) 2024-04-12

Family

ID=62431045

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810152819.8A Active CN108131069B (en) 2018-02-20 2018-02-20 Special vertical hinged door virtual mask device with bearing for architectural decoration

Country Status (1)

Country Link
CN (1) CN108131069B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108131069B (en) * 2018-02-20 2024-04-12 重庆公共运输职业学院 Special vertical hinged door virtual mask device with bearing for architectural decoration
CN113982390B (en) * 2021-11-28 2023-03-21 重庆工业职业技术学院 Installation and use method of door leaf virtual masking device
CN114059864A (en) * 2021-11-28 2022-02-18 重庆公共运输职业学院 Method for installing and using door leaf virtual covering device with prompting function
CN114059867B (en) * 2021-11-28 2023-05-26 重庆公共运输职业学院 Door leaf virtual mask device with prompt function
CN113982391B (en) * 2021-11-28 2023-03-21 重庆工业职业技术学院 Door leaf virtual covering device with cancelling limiting function

Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08128248A (en) * 1994-10-29 1996-05-21 Toshiyuki Noguchi Opening holding tool of hinged door
KR200411558Y1 (en) * 2006-01-04 2006-03-15 이병남 Holding device for operating a door
KR20090110604A (en) * 2008-04-18 2009-10-22 김지환 Door keeper using magnetic
CN101597986A (en) * 2008-06-04 2009-12-09 王兰群 Mighty door stopper
DE202009012829U1 (en) * 2009-09-24 2010-03-04 Holzbau Schmid Gmbh & Co. Kg Locking device for a particular provided with a door closer door
CN201539170U (en) * 2009-09-14 2010-08-04 王婷婷 Door stopper fastener
CN103225455A (en) * 2013-04-27 2013-07-31 杨学谦 Opened and closed door fixing methods and devices
CN203547318U (en) * 2013-10-29 2014-04-16 江顺富 Optionally-fixable door leaf
CN104563687A (en) * 2014-12-25 2015-04-29 青岛文创科技有限公司 Door stopper
KR101663982B1 (en) * 2016-02-29 2016-10-12 김현국 Bidirectional stopper for hinged door and locking device including the same
CN106193856A (en) * 2016-08-16 2016-12-07 阜阳祥云木业有限公司 A kind of Radix Saposhnikoviae door-inhale
CN107524362A (en) * 2017-09-02 2017-12-29 重庆工业职业技术学院 A kind of noiseless door attraction device and its installation method
CN108131069A (en) * 2018-02-20 2018-06-08 重庆工业职业技术学院 A kind of vertical hinged door of building decoration band special bearing is left unlocked or unlatched device
CN208294299U (en) * 2018-02-20 2018-12-28 重庆工业职业技术学院 A kind of building door leaf with bearing is magnetic-type to be left unlocked or unlatched device
CN110173176A (en) * 2018-02-19 2019-08-27 重庆公共运输职业学院 A kind of magnetic-type vertical hinged door is left unlocked or unlatched device
CN113982390A (en) * 2021-11-28 2022-01-28 重庆工业职业技术学院 Installation and use method of door leaf virtual masking device

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08128248A (en) * 1994-10-29 1996-05-21 Toshiyuki Noguchi Opening holding tool of hinged door
KR200411558Y1 (en) * 2006-01-04 2006-03-15 이병남 Holding device for operating a door
KR20090110604A (en) * 2008-04-18 2009-10-22 김지환 Door keeper using magnetic
CN101597986A (en) * 2008-06-04 2009-12-09 王兰群 Mighty door stopper
CN201539170U (en) * 2009-09-14 2010-08-04 王婷婷 Door stopper fastener
DE202009012829U1 (en) * 2009-09-24 2010-03-04 Holzbau Schmid Gmbh & Co. Kg Locking device for a particular provided with a door closer door
CN103225455A (en) * 2013-04-27 2013-07-31 杨学谦 Opened and closed door fixing methods and devices
CN203547318U (en) * 2013-10-29 2014-04-16 江顺富 Optionally-fixable door leaf
CN104563687A (en) * 2014-12-25 2015-04-29 青岛文创科技有限公司 Door stopper
KR101663982B1 (en) * 2016-02-29 2016-10-12 김현국 Bidirectional stopper for hinged door and locking device including the same
CN106193856A (en) * 2016-08-16 2016-12-07 阜阳祥云木业有限公司 A kind of Radix Saposhnikoviae door-inhale
CN107524362A (en) * 2017-09-02 2017-12-29 重庆工业职业技术学院 A kind of noiseless door attraction device and its installation method
CN110173176A (en) * 2018-02-19 2019-08-27 重庆公共运输职业学院 A kind of magnetic-type vertical hinged door is left unlocked or unlatched device
CN108131069A (en) * 2018-02-20 2018-06-08 重庆工业职业技术学院 A kind of vertical hinged door of building decoration band special bearing is left unlocked or unlatched device
CN208294299U (en) * 2018-02-20 2018-12-28 重庆工业职业技术学院 A kind of building door leaf with bearing is magnetic-type to be left unlocked or unlatched device
CN113982390A (en) * 2021-11-28 2022-01-28 重庆工业职业技术学院 Installation and use method of door leaf virtual masking device

Also Published As

Publication number Publication date
CN108131069A (en) 2018-06-08

Similar Documents

Publication Publication Date Title
CN108131069B (en) Special vertical hinged door virtual mask device with bearing for architectural decoration
US11274490B2 (en) Top-hanging sliding door including bottom guide and seal
KR101613239B1 (en) Automatic opening and closing window for ventilation of inside in structure
CN101397871B (en) Magnetic damping hinge
AU2009234370A1 (en) Animal door having an adjustable resistance against being opened
KR101695658B1 (en) Door system having automatic door closing apparatus using magnetic force
EP3508674A1 (en) Anti-jamming guided roller wheel
CN207905559U (en) A kind of magnetic-type vertical hinged door that can prevent magnet friction is left unlocked or unlatched device
CN109958351B (en) Virtual mask positioning device for vertical hinged door
CN201358661Y (en) Magnetic damping hinge
US20050229358A1 (en) Door stop
CA2957945A1 (en) Magnetic door securing device for use on a door stopper
CN210152465U (en) Fixed-point magnetic attraction contact type positioning device for virtual covering of vertical hinged door
KR100844217B1 (en) Holding device for operating a door
CN208294299U (en) A kind of building door leaf with bearing is magnetic-type to be left unlocked or unlatched device
CN209509986U (en) A kind of aluminium profiles door and window
CN105971433A (en) Movable connection structure between adapting parts of single-arm three-dimensional measurement scriber
CN114790860A (en) Double-door adjustable door leaf limiter for digital media classroom
CN110173175A (en) A kind of contactless vertical hinged door is left unlocked or unlatched locator
CN110173176A (en) A kind of magnetic-type vertical hinged door is left unlocked or unlatched device
TW201802341A (en) Magnetic repulsion hinge characterized by using magnetic repulsion properties to provide functions of automatic door closing and door stop, and to achieve simple installation, easy to use, and reliable operation
CN114790859A (en) Installation and use method of classroom double-opening door leaf limiter
CN219993436U (en) Door stopper structure
CN110173177B (en) Two-way flat-open glass door locator
US20150121762A1 (en) Pull cord fixing support for inner and outer windows

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
TA01 Transfer of patent application right

Effective date of registration: 20240317

Address after: No. 638, Xueyuan Avenue, Shuangfu Street, Jiangjin District, Chongqing 402247

Applicant after: CHONGQING VOCATIONAL College OF PUBLIC TRANSPORTATION

Country or region after: China

Address before: 401121 No. 1000 Taoyuan Avenue, Shuangfengqiao, Yubei District, Chongqing

Applicant before: CHONGQING INDUSTRY POLYTECHNIC College

Country or region before: China

TA01 Transfer of patent application right
GR01 Patent grant
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract

Application publication date: 20180608

Assignee: Chongqing heat source technology development Co.,Ltd.

Assignor: CHONGQING VOCATIONAL College OF PUBLIC TRANSPORTATION

Contract record no.: X2024980011534

Denomination of invention: A flat door virtual masking device with bearings for building decoration

Granted publication date: 20240412

License type: Common License

Record date: 20240813

Application publication date: 20180608

Assignee: Chongqing Oukeyi Trading Co.,Ltd.

Assignor: CHONGQING VOCATIONAL College OF PUBLIC TRANSPORTATION

Contract record no.: X2024980011527

Denomination of invention: A flat door virtual masking device with bearings for building decoration

Granted publication date: 20240412

License type: Common License

Record date: 20240813