Patents by Inventor Donald F. Appling

Donald F. Appling 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).

  • Apparatus and method for coupling polymer conduits to metallic bodies
    Patent number: 4600222
    Abstract: A polymer socket is secured to a metallic conduit by snapping a split polymer sleeve around the conduit with a flange on the sleeve engaged within a groove in the conduit, and then securing the sleeve against spreading. The securing function is provided by an annular insert bonded within the sleeve. A throughbore within the sleeve provides the socket.
    Type: Grant
    Filed: February 13, 1985
    Date of Patent: July 15, 1986
    Assignee: Waterman Industries
    Inventor: Donald F. Appling