Patents by Inventor Tung-Chao Cheng

Tung-Chao 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).

  • Electric scooter power switching device
    Patent number: 6634452
    Abstract: A power switching device mounted on an electric scooter is provided. The device comprises a coupling mechanism including a seat and an n-shaped connection member, a switching mechanism including a bent lever, an elastic mechanism, and a drive mechanism. The lever is operable to quickly switch the switching mechanism in one of an engaged locked state when the scooter is manually operated, a disengaged limited state, and a disengaged locked state both when the scooter is battery-operated.
    Type: Grant
    Filed: December 28, 2001
    Date of Patent: October 21, 2003
    Assignee: Chaw Khong Technology Co., Ltd.
    Inventors: Tung-Chao Cheng, Yung Tay Yu
  • Electric scooter power switching device
    Publication number: 20020092688
    Abstract: A power switching device mounted on an electric scooter is provided. The device comprises a coupling mechanism including a seat and an n-shaped connection member, a switching mechanism including a bent lever, an elastic mechanism, and a drive mechanism. The lever is operable to quickly switch the switching mechanism in one of an engaged locked state when the scooter is manually operated, a disengaged limited state, and a disengaged locked state both when the scooter is battery-operated.
    Type: Application
    Filed: December 28, 2001
    Publication date: July 18, 2002
    Applicant: CHAW KHONG TECHNOLOGY CO., LTD.
    Inventors: Tung-Chao Cheng, Yung Tay Yu