Patents by Inventor John D. Shupe

John D. Shupe 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).

  • Escalator wheel monitor
    Patent number: 7225912
    Abstract: The present invention teaches a mechanical device that monitors the support wheels, or rollers, of a moving escalator stair step. The diameter of each support wheel is indirectly measured by determining the height of each support wheel axial above a given plane. Support wheels that have unacceptable diameter trip an activation mechanism that sends an electrical signal to stop the escalator's driving motor.
    Type: Grant
    Filed: February 24, 2005
    Date of Patent: June 5, 2007
    Assignee: FujiTec America Inc.
    Inventors: H. Eugene Toennisson, Kyle A. Apperson, Mark T. Davidson, Dustin J. Charville, John D. Shupe, Masashi Tsuchihata
  • Light bulb
    Patent number: D310422
    Type: Grant
    Filed: December 26, 1985
    Date of Patent: September 4, 1990
    Inventor: John D. Shupe