Patents by Inventor Lynn M. Walker

Lynn M. Walker 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).

  • Venting cap assembly
    Patent number: 5348179
    Abstract: A capping assembly for attachment to a ferrule of a manhole assembly in a tanker truck having a cap which is provided with a central aperture for venting. The cap is further provided with threads for accommodating the threads of the ferrule. A diaphragm having a flexible central member larger than the aperture of the cap and peripheral apertures is fittably connectable to the ferrule and positionable between the cap and the opening of the ferrule. The diaphragm includes an outer circumferential beveled surface for seatingly engaging a beveled upper inner surface of the ferrule.
    Type: Grant
    Filed: May 11, 1992
    Date of Patent: September 20, 1994
    Assignee: Walker Stainless Equipment Company, Inc.
    Inventor: Lynn M. Walker