Patents by Inventor Ding B. Chen

Ding B. Chen 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).

  • Integral body speaker with detachable terminal plate
    Patent number: 4979220
    Abstract: A speaker having a core casing for enclosing a magnetic casing and a housing which form one integral piece. The integral piece accurately retains a magnetic plate and a magnetic core relative to the housing. An annular cavity is formed between the magnetic plate and the magnetic core for receiving a voice coil bobbin and cone assembly and allows the assembly to vibrate freely. The housing comprises an annular front face which has a terminal plate mounted on an outer edge thereof. A detachable terminal plate fits on the terminal plate mount core casing.
    Type: Grant
    Filed: May 5, 1988
    Date of Patent: December 18, 1990
    Assignee: Audiovox International Limited
    Inventor: Ding B. Chen