Patents by Inventor Jeffrey A. Fennig

Jeffrey A. Fennig 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).

  • Transit vehicle door control apparatus
    Patent number: 4679508
    Abstract: A transit vehicle having a door includes a zero speed condition detection apparatus provided to logically supply a zero condition output signal for each of a plurality of axles when both of the tachometers for each of those axles are under a predetermined zero speed condition. When two or more zero condition output signals are so supplied, a failsafe driver is energized to operate a control relay for determining the operation of the door.
    Type: Grant
    Filed: February 21, 1986
    Date of Patent: July 14, 1987
    Assignee: Westinghouse Electric Corp.
    Inventors: Mark T. Fruehan, Jeffrey A. Fennig, Jayant K. Kapadia