Patents by Inventor Richard M. Hisker

Richard M. Hisker 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).

  • Application and release magnet valve
    Patent number: 5454399
    Abstract: An application and release magnet valve including an electropneumatic pilot valve portion for controlling a main air valve portion for supplying, maintaining, and releasing air pressure in the brake cylinders on a railway vehicle. The electropneumatic pilot valve portion includes an application solenoid which opens a first diaphragm actuated ball check valve in the main air valve portion to supply air from a supply port to a delivery port and includes a release solenoid which opens a second diaphragm actuated ball check valve to vent air from the delivery port to an exhaust port.
    Type: Grant
    Filed: April 8, 1993
    Date of Patent: October 3, 1995
    Assignee: Westinghouse Air Brake Company
    Inventors: Michael V. Kazakis, Padmanab L. Gowda, Richard M. Hisker