Patents by Inventor Patrick F. Davy

Patrick F. Davy 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).

  • Pipe couplings
    Patent number: 4258938
    Abstract: A pipe coupling comprising an elastomeric bellows having annular end faces which, in use, abut corresponding annular flanges of the pipes being coupled, the bellows further including an internal wall defining a passageway for fluid flowing through the coupling, and an external wall forming an annular cavity around the passageway, each of the walls having at least one arch to allow for expansion and contraction of the bellows.
    Type: Grant
    Filed: March 8, 1979
    Date of Patent: March 31, 1981
    Assignee: Andre Rubber Company Limited
    Inventor: Patrick F. Davy