Patents by Inventor Allen J. Hendry

Allen J. Hendry 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).

  • Circuit breaker with one-way adjustment of tripping current level
    Patent number: 3975701
    Abstract: A molded case circuit breaker having a solid-state trip unit adjustable over a variety of ratings. One-way adjustment is provided, permitting a reduction in the rating of the circuit breaker and preventing an increase in the rating. A ratchet mechanism and a one-way screw mechanism are provided to implement the one-way adjustment.
    Type: Grant
    Filed: October 10, 1974
    Date of Patent: August 17, 1976
    Assignee: Westinghouse Electric Corporation
    Inventors: Allen J. Hendry, Alfred E. Maier