Patents by Inventor Yajun DONG

Yajun DONG 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: 10745248
    Abstract: A handrail belt tension device is provided for an escalator having a truss and an annular handrail belt rotatable relative to the truss. The handrail belt tension device includes: a base plate on which a roller for supporting the handrail belt is provided, and a guiding mechanism which is fixed to the truss. The base plate is connected to the guiding mechanism, and rotatable and translatable relative to the guiding mechanism so as to adjust the handrail belt by the base plate thereby the handrail belt can be in a well tensioned status. The handrail belt tension device ensures that the tension device is installed in a more accurate position, making it easier to adjust the tensioning force of the handrail belt, reducing the time for adjusting the handrail belt, and increasing the service life of the handrail belt.
    Type: Grant
    Filed: February 5, 2019
    Date of Patent: August 18, 2020
    Assignees: KONE ELEVATORS CO., LTD., KONE CORPORATION
    Inventors: Lining Liu, Yajun Dong
  • Patent number: 10457524
    Abstract: The present disclosure discloses a tension device for a drive chain of a handrail system of an escalator system, a method and an escalator system including the same. The tension device for the drive chain applies pressures in opposite directions to a drive chain so as to make portions of the drive close to each other to tension the drive chain. The pressures are applied to the drive chain via a weight or a pre-loaded spring. The present disclosure also provides a method for tensioning a drive chain. The present disclosure can eliminate loosening of the drive chain after running several months, eliminate periodic heavy work on site for the escalator system and a drive system comprising the drive chain, and improve quality thereof in a simple, reliable and low cost manner.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: October 29, 2019
    Assignees: KONE CORPORATION, KONE ELEVATOR CO., LTD.
    Inventors: Yajun Dong, Andreas Mnich
  • Publication number: 20190241405
    Abstract: The invention provides a handrail belt tension device for an escalator, the escalator comprising a truss and an annular handrail belt rotatable relative to the truss, wherein the handrail belt tension device comprises: a base plate on which a roller for supporting the handrail belt is provided; a guiding mechanism which is fixed to the truss; and wherein the base plate is connected to the guiding mechanism, and rotatable and translatable relative to the guiding mechanism so as to adjust the handrail belt by the base plate thereby the handrail belt can be in a well tensioned status. The handrail belt tension device ensures that the tension device is installed in a more accurate position, making it easier to adjust the tensioning force of the handrail belt, reducing the time for adjusting the handrail belt, and increasing the service life of the handrail belt.
    Type: Application
    Filed: February 5, 2019
    Publication date: August 8, 2019
    Applicants: KONE Elevator Co., Ltd., KONE CORPORATION
    Inventors: Lining LIU, Yajun DONG
  • Publication number: 20190071286
    Abstract: The present disclosure discloses a tension device for a drive chain of a handrail system of an escalator system, a method and an escalator system including the same. The tension device for the drive chain applies pressures in opposite directions to a drive chain so as to make portions of the drive close to each other to tension the drive chain. The pressures are applied to the drive chain via a weight or a pre-loaded spring. The present disclosure also provides a method for tensioning a drive chain. The present disclosure can eliminate loosening of the drive chain after running several months, eliminate periodic heavy work on site for the escalator system and a drive system comprising the drive chain, and improve quality thereof in a simple, reliable and low cost manner.
    Type: Application
    Filed: August 31, 2018
    Publication date: March 7, 2019
    Applicants: KONE CORPORATION, KONE Elevator Co., Ltd.
    Inventors: Yajun DONG, Andreas MNICH
  • Patent number: 9487379
    Abstract: A landing cover system for an escalator floor and an escalator system are disclosed. The landing cover system includes at least two covers configured to form the surface of the escalator floor by matching the two covers together, a frame configured to support the at least two covers and a first water groove disposed at the inner side of the frame and configured to receive the fluid flowing from the at least two covers into the frame. The escalator system includes a first landing cover system disposed at the upper portion of the escalator system, a second landing cover system disposed at the lower portion of the escalator system and an electric driving system disposed between the first landing system and the second landing system to transport objects between the first landing system and the second landing system, wherein the first landing system and the second landing system are the landing systems described previously.
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: November 8, 2016
    Assignee: KONE CORPORATION
    Inventor: Yajun Dong
  • Publication number: 20160130118
    Abstract: A landing cover system for an escalator floor and an escalator system are disclosed. The landing cover system includes at least two covers configured to form the surface of the escalator floor by matching the two covers together, a frame configured to support the at least two covers and a first water groove disposed at the inner side of the frame and configured to receive the fluid flowing from the at least two covers into the frame. The escalator system includes a first landing cover system disposed at the upper portion of the escalator system, a second landing cover system disposed at the lower portion of the escalator system and an electric driving system disposed between the first landing system and the second landing system to transport objects between the first landing system and the second landing system, wherein the first landing system and the second landing system are the landing systems described previously.
    Type: Application
    Filed: November 6, 2015
    Publication date: May 12, 2016
    Applicant: KONE Corporation
    Inventor: Yajun DONG