Patents by Inventor Stacey L. Duvall

Stacey L. Duvall 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).

  • Terminal barrier system for molded case circuit breaker
    Patent number: 6172586
    Abstract: A circuit breaker (10) including a terminal barrier system (140). The terminal barrier system (140) includes a terminal barrier (142) attached to a circuit breaker base (12) at the terminals (16, 18), line and load, of the breaker (10) and a terminal connector (144) mounted in the terminal barrier (142) to align with a terminal (16, 18) of the breaker (10). Several embodiments of the terminal barrier (142) and terminal connector (144) are provided which allow flexibility in combining the various terminal barriers and terminal connectors for a given current rating of the breaker (10). The terminal barrier system (140) protects the terminals (16, 18) of the circuit breaker during short circuit condition operations, prevents pole to pole electrification and prevents accidental contact with live electrical wires in the contacts (42, 44).
    Type: Grant
    Filed: November 5, 1999
    Date of Patent: January 9, 2001
    Assignee: Siemens Energy & Automation Inc.
    Inventors: James F. Ferree, W. Dale Robbins, Michael W. Souza, Stacey L. Duvall, James H. Blessitt, Peter P. Clickner