Patents by Inventor Stephen S. Thomas

Stephen S. Thomas 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).

  • Latch mechanism for a circuit breaker
    Patent number: 6727788
    Abstract: An apparatus for operating a circuit breaker. The circuit breaker includes a housing, a cradle mounted in the housing and coupled to a handle and to a movable contact. The apparatus comprises a latch frame mounted in the circuit breaker housing. A latch roller is mounted on the cradle. A latch member is configured to selectively engage the latch roller and the latch member is rotatably coupled to the latch frame. A latch shaft assembly is rotatably mounted in the latch frame and selectively engaged by the latch member. Upon rotation of the latch shaft assembly, the latch shaft assembly will disengage from the latch member and cause the movable contact to move.
    Type: Grant
    Filed: June 20, 2002
    Date of Patent: April 27, 2004
    Assignee: Siemens Energy & Automation, Inc.
    Inventors: Robert P. Lawson, Andrew Hall, William C. McCoy, Stephen S. Thomas, Ralph Leon Newton