Patents by Inventor Michael F. J. Selwyn

Michael F. J. Selwyn 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).

  • Corotron apparatus
    Patent number: 4073587
    Abstract: Apparatus for vibrating a corotron wire to prevent contamination including piezoelectric means to vibrate the wire. Also disclosed is an activation arrangement for the wire vibrating means including a striker plate movable with a rotating portion of the machine to periodically vibrate the wire. Additional specific configurations for vibrating means are disclosed.
    Type: Grant
    Filed: March 26, 1976
    Date of Patent: February 14, 1978
    Assignee: Rank Xerox Ltd.
    Inventor: Michael F. J. Selwyn