Patents by Inventor James J. Wellwood

James J. Wellwood 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).

  • Patent number: 4275888
    Abstract: An attachment for a phonograph pickup cartridge capable of removing static and stabilizing vibration of the cartridge body. A brush comprising bristles capable of engaging the inside of the grooves of a disc-type phonograph record is coupled to the cartridge body through a bearing which provides a mechanical resistance capable of damping both vertical and lateral vibrations. The brush is made from an electrical conductor, such as carbon, and is connected to the shield of the cartridge to remove static electricity from the surface and grooves of the record.
    Type: Grant
    Filed: October 30, 1979
    Date of Patent: June 30, 1981
    Assignee: Shure Brothers, Inc.
    Inventors: Carl R. Anderson, James J. Wellwood, Lawrence R. Happ
  • Patent number: D254004
    Type: Grant
    Filed: September 14, 1977
    Date of Patent: January 22, 1980
    Assignee: Shure Brothers Incorporated
    Inventors: James J. Wellwood, Robert L. Deschamps