Patents by Inventor John T. Wiggins

John T. Wiggins 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).

  • Voice coil centering and suspension for vented pole piece
    Patent number: 4508941
    Abstract: An apparatus and method for centering a voice coil in a loudspeaker having a vented pole piece. The voice coil centering is accomplished by means of a concentrically located voice coil suspension and an attached cylindrical mounting ring that can be set into a recess, or otherwise positively located on the pole piece. The pole piece is formed in such a way so as to precisely receive a suspension mounting ring and center the voice coil in the magnetic field gap with no further adjustments. This invention permits the use of a pole piece mounted voice coil suspension on a ventilated pole piece.
    Type: Grant
    Filed: October 28, 1982
    Date of Patent: April 2, 1985
    Assignee: Community Light & Sound Inc.
    Inventor: John T. Wiggins