Patents by Inventor Daniel-Jun Cheng

Daniel-Jun Cheng 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).

  • Locking device for high-voltage switchgear
    Patent number: 9875868
    Abstract: The device is used for locking an access for actuating two switching devices of high-voltage switchgear with the aid of a drive shaft transmitting drive force onto the two switching devices. In order to increase the operational safety of the high-voltage switchgear with little outlay, the locking device comprises a closing disk which is fastened on the drive shaft, a rocker bar arrangement containing at least four rocker bars, and a slider. The slider can be moved, on-site, into two positions, the first of which releases an access for the actuation on-site and blocks an access for the actuation from a remote location, and the second of which blocks the access for the on-site actuation and releases the access for the remote actuation.
    Type: Grant
    Filed: August 10, 2016
    Date of Patent: January 23, 2018
    Assignee: ABB Schweiz AG
    Inventors: Daniel-Jun Cheng, James-Sheng Qiang Li, JianMei Wang, Severin Neubauer, Markus Widenhorn
  • LOCKING DEVICE FOR HIGH-VOLTAGE SWITCHGEAR
    Publication number: 20170047179
    Abstract: The device is used for locking an access for actuating two switching devices of high-voltage switchgear with the aid of a drive shaft transmitting drive force onto the two switching devices. In order to increase the operational safety of the high-voltage switchgear with little outlay, the locking device comprises a closing disk which is fastened on the drive shaft, a rocker bar arrangement containing at least four rocker bars, and a slider. The slider can be moved, on-site, into two positions, the first of which releases an access for the actuation on-site and blocks an access for the actuation from a remote location, and the second of which blocks the access for the on-site actuation and releases the access for the remote actuation.
    Type: Application
    Filed: August 10, 2016
    Publication date: February 16, 2017
    Inventors: Daniel-Jun Cheng, James-Sheng Qiang Li, JianMei Wang, Severin Neubauer, Markus Widenhorn