Patents by Inventor Serge Leclerc

Serge Leclerc 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).

  • Spring actuated brake cylinder device with fluid pressure operable release piston lockout means
    Patent number: 4116113
    Abstract: A brake cylinder device including a brake piston operable by a spring force to an application position and to a release position in response to an opposing fluid pressure force, and a fluid pressure operable locking device operable responsively to release pressure for locking the piston in the release position and for delaying such locking of the piston in the release position during normal operations to prevent untimely locking-up of the piston.
    Type: Grant
    Filed: July 11, 1977
    Date of Patent: September 26, 1978
    Assignee: Wabco Westinghouse
    Inventor: Serge Leclerc