Patents by Inventor Matthew L. Kelley

Matthew L. Kelley 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).

  • Dual gasket lined pipe connector
    Patent number: 5405171
    Abstract: A multi-piece, pipe joint seal has a slidable interface between seal pieces. The slidable interface allows for slippage between pieces during pipe joint assembly and disassembly, minimizing rotational and other stresses on the seal pieces and pipe sealing surfaces which may damage or endanger the deformable seal. The slidable interface seal is especially useful for joining brittle-lined pipe sections handling harsh fluids.
    Type: Grant
    Filed: June 1, 1993
    Date of Patent: April 11, 1995
    Assignee: Union Oil Company of California
    Inventors: William C. Allen, William M. Rickard, Daniel P. Hoyer, David E. Stikkers, Matthew L. Kelley