Patents by Inventor Wang-Hai Chang

Wang-Hai 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).

  • Fastening device for use in a casing assembly
    Patent number: 7234738
    Abstract: A casing assembly includes a casing having a receiving space and an entrance, and a lid mounted detachably in the entrance to deny access into the space. A fastening device is disposed in the casing, and includes a blocking plate and a resilient clip urging the blocking plate to rotate in a predetermined direction to engage the same with the lid, thereby preventing removal of the lid from the casing. The lid may include a downwardly extending tongue which passes through a hole in the casing and is to be engaged by a hook-like portion on the end of the blocking plate.
    Type: Grant
    Filed: August 11, 2005
    Date of Patent: June 26, 2007
    Assignee: Inventec Applicances Corp.
    Inventors: Johnson Tsao, Hsin-Chih Liu, Wang-Hai Chang
  • Fastening device for use in a casing assembly
    Publication number: 20070037451
    Abstract: A casing assembly includes a casing having a receiving space and an entrance, and a lid mounted detachably in the entrance to deny access into the space. A fastening device is disposed in the casing, and includes a blocking plate and a resilient clip urging the blocking plate to rotate in a predetermined direction to engage the same with the lid, thereby preventing removal of the lid from the casing.
    Type: Application
    Filed: August 11, 2005
    Publication date: February 15, 2007
    Inventors: Johnson Tsao, Hsin-Chih Liu, Wang-Hai Chang