Patents by Inventor Guo-Heng Chang

Guo-Heng Chang 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).

  • Fixture for an electrical device
    Patent number: 6679712
    Abstract: A fixture for an electrical device includes a pin casing, a spring, a ring block and a pin. A pin casing has a trough formed from a bottom and a round-wall for containing spring and ring block. The round-wall forms at least a flange to limit ring block inside pin casing. The pin has a press portion and a wedge portion. The wedge portion passes through ring block, spring and pin casing so as to combine those together. The press portion is used for pushing the ring block to compress the spring.
    Type: Grant
    Filed: June 19, 2002
    Date of Patent: January 20, 2004
    Inventor: Guo-Heng Chang
  • FIXTURE FOR AN ELECTRICAL DEVICE
    Publication number: 20030236028
    Abstract: A fixture for an electrical device includes a pin casing, a spring, a ring block and a pin. A pin casing has a trough formed from a bottom and a round-wall for containing spring and ring block. The round-wall forms at least a flange to limit ring block inside pin casing. The pin has a press portion and a wedge portion. The wedge portion passes through ring block, spring and pin casing so as to combine those together. The press portion is used for pushing the ring block to compress the spring.
    Type: Application
    Filed: June 19, 2002
    Publication date: December 25, 2003
    Inventor: Guo-Heng Chang