Patents by Inventor Patrick Hollis

Patrick Hollis 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).

  • Restraint coupling assembly for double containment pipe system
    Patent number: 5402831
    Abstract: A restraint coupling assembly is provided for a double containment pipe system having an inner carrier pipe formed from a first thermoplastic material and an outer containment pipe formed from a second thermoplastic material. The restraint coupling assembly includes a carrier component formed from the first thermoplastic material and having a carrier cylinder conforming to the diameter of the carrier pipe, and having a carrier flange extending rigidly outwardly from the carrier cylinder. The restraint coupling assembly further includes a pair of containment components formed from the second thermoplastic material. Each containment component includes a containment cylinder conforming to the diameter of the containment pipe. Each containment component further includes an inwardly extending containment flange having an aperture therein with the diameter of the aperture greater than the outer diameter of the carrier pipe.
    Type: Grant
    Filed: August 1, 1991
    Date of Patent: April 4, 1995
    Assignee: Asahi/America, Inc.
    Inventor: Patrick Hollis