Patents by Inventor Zhanqiang Li

Zhanqiang Li has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10995787
    Abstract: The present invention discloses a quick locking piece, comprising a shaft sleeve and a rotary shaft which are cooperatively installed; the rotary shaft has a locked section and a sliding section, and the locked section is located at one end portion of the rotary shaft; an outer contour surface of the sliding section is provided with a first guide slot for guiding the rotary shaft to move and lock and a second guide slot for guiding the rotary shaft to rotate; the locked section of the rotary shaft is sleeved with a connector pivotally connected with the shaft sleeve; a first positioning post is provided on the connector at a position corresponding to the first guide slot, a second positioning post is provided on the shaft sleeve at a position corresponding to the second guide slot. The quick locking piece has a simpler structure, which can improve the installation efficiency.
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: May 4, 2021
    Assignee: ROE Visual Co., Ltd.
    Inventors: Danhu Cai, Zhanqiang Li, Yongfei Yu, Shunwen Tian, Chen Lu, Dries Vermeulen
  • Patent number: 10857656
    Abstract: The present invention discloses a leveling device for adjusting an installation gap between a first component and a second component. The first component and the second component respectively have a cooperative installation surface, the cooperative installation surface of the first component is provided with at least one leveling device; the leveling device comprises a driving device installed in the cooperative installation surface of the first component and an adjustment head rotatably connected to the driving device, the adjustment head moves upwardly or retracts downwardly relative to the cooperative installation surface of the first component; the driving device drives the adjustment head to protrude outside an installation position thereof and abut with the second component located on an opposite side of the installation position of the adjustment head to adjust the gap between the first and second component. The present invention relates to an easy-to-level display screen using the leveling device.
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: December 8, 2020
    Assignee: Roe Visual Co., Ltd.
    Inventors: Danhu Cai, Yongfei Yu, Shunwen Tian, Ping Wu, Sen Zhang, Zhanqiang Li, Chen Lu, Dries Vermeulen
  • Patent number: 10775656
    Abstract: The present invention discloses a guiding device and a self-unloading anti-separation display device for guiding a first component to move on a second component, wherein the first component and the second component respectively have a cooperative installation surface, and at least one of the cooperative installation surface of the first component and the cooperative installation surface of the second component is provided with at least one unloading device; the unloading device has a driving device and a pushing mechanism protruding towards the second component, and the pushing mechanism is butted with the second component to apply a counter force to the first component; the cooperative installation surface of the first component is provided with at least one guidepost; at least one guide hole is arranged at a position of the cooperative installation surface of the second component corresponding to the guidepost; the guidepost is inserted into the guide hole.
    Type: Grant
    Filed: July 13, 2018
    Date of Patent: September 15, 2020
    Assignee: ROE Visual Co., Ltd.
    Inventors: Danhu Cai, Yongfei Yu, Shunwen Tian, Ping Wu, Sen Zhang, Zhanqiang Li, Chen Lu, Dries Vermeulen
  • Patent number: 10713979
    Abstract: The present invention discloses an unloading device and a self-unloading display device having a first component or a second component cooperatively installed, the first and the second component respectively have a cooperative installation surface, the cooperative installation surface of the first component is provided with at least one unloading device; the unloading device comprises a driving device and a pushing mechanism; the pushing mechanism is connected to a driving device in a transmission way, the pushing mechanism has at least a set of telescopic dowel bars, an end part of the dowel bar is an inclined surface, a small end formed by the inclined surface is arranged close to the cooperative installation surface of the first component; the driving device drives the dowel bar to move along the cooperative installation surface of the first component, the inclined surface of the dowel bar abuts with and moves along the second component.
    Type: Grant
    Filed: July 27, 2018
    Date of Patent: July 14, 2020
    Assignee: ROE Visual Co., Ltd.
    Inventors: Danhu Cai, Yongfei Yu, Shunwen Tian, Ping Wu, Sen Zhang, Zhanqiang Li, Chen Lu, Dries Vermeulen
  • Publication number: 20190316623
    Abstract: The present invention discloses a quick locking piece, comprising a shaft sleeve and a rotary shaft which are cooperatively installed; the rotary shaft has a locked section and a sliding section, and the locked section is located at one end portion of the rotary shaft; an outer contour surface of the sliding section is provided with a first guide slot for guiding the rotary shaft to move and lock and a second guide slot for guiding the rotary shaft to rotate; the locked section of the rotary shaft is sleeved with a connector pivotally connected with the shaft sleeve; a first positioning post is provided on the connector at a position corresponding to the first guide slot, a second positioning post is provided on the shaft sleeve at a position corresponding to the second guide slot. The quick locking piece has a simpler structure, which can improve the installation efficiency.
    Type: Application
    Filed: December 29, 2017
    Publication date: October 17, 2019
    Inventors: Danhu Cai, Zhanqiang Li, Yongfei Yu, Shunwen Tian, Chen Lu, Dries Vermeulen
  • Publication number: 20180374400
    Abstract: The present invention discloses an unloading device and a self-unloading display device having a first component or a second component cooperatively installed, the first and the second component respectively have a cooperative installation surface, the cooperative installation surface of the first component is provided with at least one unloading device; the unloading device comprises a driving device and a pushing mechanism; the pushing mechanism is connected to a driving device in a transmission way, the pushing mechanism has at least a set of telescopic dowel bars, an end part of the dowel bar is an inclined surface, a small end formed by the inclined surface is arranged close to the cooperative installation surface of the first component; the driving device drives the dowel bar to move along the cooperative installation surface of the first component, the inclined surface of the dowel bar abuts with and moves along the second component.
    Type: Application
    Filed: July 27, 2018
    Publication date: December 27, 2018
    Inventors: Danhu CAI, Yongfei YU, Shunwen TIAN, Ping WU, Sen ZHANG, Zhanqiang LI, Chen LU, Dries VERMEULEN
  • Publication number: 20180318985
    Abstract: The present invention discloses a leveling device for adjusting an installation gap between a first component and a second component. The first component and the second component respectively have a cooperative installation surface, the cooperative installation surface of the first component is provided with at least one leveling device; the leveling device comprises a driving device installed in the cooperative installation surface of the first component and an adjustment head rotatably connected to the driving device, the adjustment head moves upwardly or retracts downwardly relative to the cooperative installation surface of the first component; the driving device drives the adjustment head to protrude outside an installation position thereof and abut with the second component located on an opposite side of the installation position of the adjustment head to adjust the gap between the first and second component. The present invention relates to an easy-to-level display screen using the leveling device.
    Type: Application
    Filed: July 11, 2018
    Publication date: November 8, 2018
    Inventors: Danhu CAI, Yongfei YU, Shunwen TIAN, Ping WU, Sen ZHANG, Zhanqiang LI, Chen LU, Dries VERMEULEN
  • Publication number: 20180321544
    Abstract: The present invention discloses a guiding device and a self-unloading anti-separation display device for guiding a first component to move on a second component, wherein the first component and the second component respectively have a cooperative installation surface, and at least one of the cooperative installation surface of the first component and the cooperative installation surface of the second component is provided with at least one unloading device; the unloading device has a driving device and a pushing mechanism protruding towards the second component, and the pushing mechanism is butted with the second component to apply a counter force to the first component; the cooperative installation surface of the first component is provided with at least one guidepost; at least one guide hole is arranged at a position of the cooperative installation surface of the second component corresponding to the guidepost; the guidepost is inserted into the guide hole.
    Type: Application
    Filed: July 13, 2018
    Publication date: November 8, 2018
    Inventors: Danhu CAI, Yongfei YU, Shunwen TIAN, Ping WU, Sen ZHANG, Zhanqiang LI, Chen LU, Dries VERMEULEN
  • Patent number: D804712
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: December 5, 2017
    Assignee: ROE VISUAL Co., Ltd.
    Inventors: Danhu Cai, Zhanqiang Li, Yongfei Yu
  • Patent number: D817285
    Type: Grant
    Filed: October 19, 2016
    Date of Patent: May 8, 2018
    Assignee: ROE Visual Co., Ltd.
    Inventors: Danhu Cai, Zhanqiang Li, Hong Zhang, Xuhua Jiang
  • Patent number: D821497
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: June 26, 2018
    Assignee: ROE Visual Co., Ltd.
    Inventors: Danhu Cai, Zhanqiang Li, Jun Li, Hong Zhang
  • Patent number: D822666
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: July 10, 2018
    Assignee: ROE Visual Co., Ltd.
    Inventors: Danhu Cai, Zhanqiang Li, Jun Li, Hong Zhang
  • Patent number: D822667
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: July 10, 2018
    Assignee: ROE Visual Co., Ltd.
    Inventors: Danhu Cai, Zhanqiang Li, Jun Li, Hong Zhang
  • Patent number: D822668
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: July 10, 2018
    Assignee: ROE Visual Co., Ltd.
    Inventors: Danhu Cai, Zhanqiang Li, Jun Li, Hong Zhang
  • Patent number: D828971
    Type: Grant
    Filed: December 25, 2016
    Date of Patent: September 18, 2018
    Assignee: ROE Visual Co., Ltd.
    Inventors: Danhu Cai, Zhanqiang Li, Xuhua Jiang, Hong Zhang
  • Patent number: D849726
    Type: Grant
    Filed: December 30, 2016
    Date of Patent: May 28, 2019
    Assignee: ROE Visual Co., Ltd.
    Inventors: Danhu Cai, Zhanqiang Li, Jun Li, Xuhua Jiang
  • Patent number: D865222
    Type: Grant
    Filed: December 30, 2016
    Date of Patent: October 29, 2019
    Assignee: ROE Visual Co., Ltd.
    Inventors: Danhu Cai, Zhanqiang Li, Xuhua Jiang, Hong Zhang