Patents by Inventor Tsang-I Cheng

Tsang-I 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).

  • Power source electrical switch
    Patent number: 6525639
    Abstract: An electrical switch comprises a housing in which at least two power source terminals and a conductive piece are disposed such that the conductive piece is fastened at one end with one of the two power source terminals for electrically conducting or interrupting the two power source terminals. The conductive piece is connected with a link structure by which an external force causes the conductive piece to make contact with or separate from other one of the two power source terminals. A spring piece is fastened at one end with the housing and at other end with the link structure. The spring piece enables the conductive piece to jump so as to separate from other one of the two power source terminals at the time when the conductive piece is overheated.
    Type: Grant
    Filed: August 15, 2001
    Date of Patent: February 25, 2003
    Inventor: Tsang-I Cheng
  • ELECTRICAL SWITCH
    Publication number: 20030034871
    Abstract: An electrical switch comprises a housing in which at least two power source terminals and a conductive piece are disposed such that the conductive piece is fastened at one end with one of the two power source terminals for electrically conducting or interrupting the two power source terminals. The conductive piece is connected with a link structure by which an external force causes the conductive piece to make contact with or separate from other one of the two power source terminals. A spring piece is fastened at one end with the housing and at other end with the link structure. The spring piece enables the conductive piece to jump so as to separate from other one of the two power source terminals at the time when the conductive piece is overheated.
    Type: Application
    Filed: August 15, 2001
    Publication date: February 20, 2003
    Inventor: Tsang-I Cheng