Patents by Inventor Richard E. Spielmaker

Richard E. Spielmaker 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).

  • Power supply
    Patent number: 4945898
    Abstract: A pulsed power supply for providing power to a piezoelectric crystal. The power supply provides power to the piezoelectric crystal causing contraction of the crystal. Upon reaching a predetermined degree of contraction, the electrical voltage form the power supply is removed from the piezoelectric crystal by creating a short-circuit between the power supply and the crystal. Removal of electrical voltage from the crystal causes the immediate expansion of the crystal and a resulting energy wave.
    Type: Grant
    Filed: July 12, 1989
    Date of Patent: August 7, 1990
    Assignee: Diasonics, Inc.
    Inventors: James W. Pell, Richard E. Spielmaker, Arthur W. Zikorus