Patents by Inventor Peter F. Zupan

Peter F. Zupan 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).

  • Safety coupler-air brake interlock
    Patent number: 5297858
    Abstract: A safety interlock for an intermodal train has a locking pin shiftable for locking a coupling pin in a coupling position. An air valve is associated with the locking pin for providing an air pressure signal when the locking pin is retracted, which signal actuates another air valve for venting the brake pipe of a braking system.
    Type: Grant
    Filed: June 11, 1992
    Date of Patent: March 29, 1994
    Assignee: Wabash National Corporation
    Inventor: Peter F. Zupan