Patents by Inventor Robert L. Cresswell

Robert L. Cresswell 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).

  • Odor trap assembly
    Patent number: 4706701
    Abstract: An odor trap assembly (10) comprising a drain hose unit (12) connected between a holding tank inlet (12) connected between a holding tank inlet (20) and a remote collection receptacle (50); and, a framework unit (11) having at least one elevated support surface (14) formed intermediate its ends; wherein the height of the said at lest one elevated support surface (14) is sufficient to create a liquid barrier (100) within the drain hose unit (12) when a portion of said drain hose unit (12) is draped over said at least one elevated (12) support surface.
    Type: Grant
    Filed: July 31, 1986
    Date of Patent: November 17, 1987
    Inventor: Robert L. Cresswell