Patents by Inventor Thomas F. Keene, Jr.

Thomas F. Keene, Jr. 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).

  • Disconnect switch with viewing window
    Patent number: 5243161
    Abstract: An electrical disconnect switch having a viewing window for viewing the internal switching mechanism is disclosed. The viewing window utilizes gaskets, rivets, a substantially transparent viewing window plate, and a viewing window retainer to provide a dust-tight, water-tight and drip-tight viewing window.
    Type: Grant
    Filed: March 20, 1992
    Date of Patent: September 7, 1993
    Assignee: Square D Company
    Inventors: Russell Cox, Thomas F. Keene, Jr.