Patents by Inventor Phillip J. Leipf

Phillip J. Leipf 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).

  • Automotive oil level control apparatus
    Patent number: 5195678
    Abstract: A fluid level control valve has a base with an aperture formed therethrough. A cover is movably disposed over the aperture and is biased by a thermostatic element in a direction tending to close the aperture. The thermostatic element is a generally U-shaped strip having one end mounted on the base with its opposite end biased against the cover. The cover is adapted to pivot about one hinge at temperatures below a selected temperature value and pivot about a second hinge at temperatures above the selected value. A second embodiment particularly adapted to accommodate different flow rates employs a movable first hinge location.
    Type: Grant
    Filed: December 20, 1991
    Date of Patent: March 23, 1993
    Assignee: Texas Instruments Incorporated
    Inventors: Eric J. Giasson, Alfred J. White, Narendra R. Zaveri, Joseph M. Gondusky, Phillip J. Leipf