Patents by Inventor Robert J. Higgs

Robert J. Higgs 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).

  • Gasket for making joints in corrugated plastic pipe
    Patent number: 4702502
    Abstract: A telescopic joint in low pressure corrugated plastic pipe. The joint includes a one-piece elastomeric gasket which functions as a seal between the telescoped pipes. The gasket has a sealing portion adapted to be disposed in a groove in one of the pipes and an anchoring portion adapted to be disposed in an adjacent groove. As the pipes are telescoped together the anchoring portion is trapped in the groove and anchors the sealing portion in place as it is compressed due to an interference fit with the pipes as the joint is made.
    Type: Grant
    Filed: August 6, 1985
    Date of Patent: October 27, 1987
    Assignee: Contech Construction Products Inc.
    Inventors: James W. Shade, Robert J. Higgs