Patents by Inventor Kazuaki Chida

Kazuaki Chida 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).

  • Elevator rope maintenance method
    Patent number: 11465879
    Abstract: During a maintenance inspection, an optical rope diameter measuring device is provided at a predetermined position along a path of a wire rope, rope diameter is measured at multiple measuring points while the elevator is driven in test mode, and diameter reduction at each measuring point is determined and stored as a first diameter reduction (S2_S6). During a subsequent maintenance inspection, rope diameter is similarly measured at each measuring point to determine diameter reduction constituting a second diameter reduction (S7_S11). Based on these two diameter reductions, the time at which diameter reduction will reach a predetermined threshold value is predicted for each measuring point, and the earliest time is displayed as a rope replacement time (S12_S14).
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: October 11, 2022
    Assignees: NIPPON OTIS ELEVATOR COMPANY, MEIDENSHA CORPORATION
    Inventors: Mitsuru Kato, Hirotomo Tanaka, Takashi Takeuchi, Ryuji Onoda, Yusuke Watabe, Yoshiki Nota, Kazuaki Chida
  • ELEVATOR ROPE MAINTENANCE METHOD
    Publication number: 20190359450
    Abstract: During a maintenance inspection, an optical rope diameter measuring device is provided at a predetermined position along a path of a wire rope, rope diameter is measured at multiple measuring points while the elevator is driven in test mode, and diameter reduction at each measuring point is determined and stored as a first diameter reduction (S2_S6). During a subsequent maintenance inspection, rope diameter is similarly measured at each measuring point to determine diameter reduction constituting a second diameter reduction (S7_S11). Based on these two diameter reductions, the time at which diameter reduction will reach a predetermined threshold value is predicted for each measuring point, and the earliest time is displayed as a rope replacement time (S12_S14).
    Type: Application
    Filed: January 23, 2018
    Publication date: November 28, 2019
    Inventors: Mitsuru Kato, Hirotomo Tanaka, Takashi Takeuchi, Ryuji Onoda, Yusuke Watabe, Yoshiki Nota, Kazuaki Chida