Patents by Inventor Edwin A. Dvorak

Edwin A. Dvorak 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).

  • Liquid level sensor switch
    Patent number: 4467156
    Abstract: A liquid level sensor switch to indicate whether a sensed liquid is above or below a predetermined level utilizing a generally cylindrical float element that is slightly ballasted along its length so that it is self-orienting with respect to the vertical. Electrically connected contacts are placed at opposite ends of the ballasted float element and are maintained in a proper downward orientation so as to connect and disconnect an electrically conducting path when the liquid level changes about a predetermined level.
    Type: Grant
    Filed: January 10, 1983
    Date of Patent: August 21, 1984
    Assignee: Ford Motor Company
    Inventors: Edwin A. Dvorak, George Nagy, Jr., Boris Puscasu, Gary A. Pniewski