Patents by Inventor Ryszard J. Pryputniewicz

Ryszard J. Pryputniewicz 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).

  • Wiper for sliding electrical contact
    Patent number: 4572599
    Abstract: Wipers for sliding electrical contact have a form with gradual and progressive reduction in width and therfore decreasing stiffness and mass as they proceed towards the tip. This form results in higher resonant vibrational frequencies, enabling a wiper to follow the contact surface in high speed motion with less contact force. The lower contact force in turn produces less wiper distortion and consequently less hysteresis and wear.
    Type: Grant
    Filed: May 27, 1983
    Date of Patent: February 25, 1986
    Assignee: Waters Manufacturing, Inc.
    Inventors: Ryszard J. Pryputniewicz, John Clayton, Robert A. Waters