Patents by Inventor James Westhoff

James Westhoff 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).

  • Patent number: 4387900
    Abstract: A resilient gasket having an outer annular flange positioned within a manhole opening and maintained thereagainst under compression by means of a compression band. The gasket is provided with a central opening defined by an enlarged beaded periphery having an elasticity adapted to tightly encircle the outer periphery of the pipe. A folded intermediate section is arranged between and integrally joined to the outer flange and the beaded inner periphery, the intermediate section is comprised of first and second diagonally aligned annular portions integrally joined along a fold to define a V-shape which imparts a yieldability enabling the gasket to maintain a watertight seal between the manhole opening and the pipe, even in the presence of a significant misalignment therebetween. A strap is positioned about the intermediate section of the gasket adjacent the inner beaded periphery to enhance the watertight seal between the gasket and the pipe.
    Type: Grant
    Filed: May 5, 1982
    Date of Patent: June 14, 1983
    Assignee: A-Lok Products, Inc.
    Inventors: Jack Ditcher, James A. Westhoff