Patents by Inventor George C. Thornley

George C. Thornley 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).

  • Electrical brush having a wear indicator
    Patent number: 5739619
    Abstract: An electrical brush having a wear indicator in the form of a marking substance within the brush which removes a film from a rotating collector surface of an electrical device just prior to the brush becoming worn to its minimum length. The removal of the film leaves a bright streak on the collector surface, and provides a visual indication that the brush is in need of replacement.
    Type: Grant
    Filed: March 19, 1996
    Date of Patent: April 14, 1998
    Assignee: Life Cycle Engineering, Inc.
    Inventor: George C. Thornley