Patents by Inventor Paul R. DuPont, Jr.

Paul R. DuPont, Jr. 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).

  • Patent number: 5320389
    Abstract: A quick-connect, clampable fitting for a flexible hose which comprises a flexible main body of plastic material that is moldable or otherwise affixable to the hose. The main body including an integral flange member having an O-ring ribbed sealing face. The main body nests within a separate reinforcing shell of steel which absorbs the stress applied by the make-up clamp. For affixing the main body to the hose in the filed an alternative embodiment of the main body includes a plurality of channels and galleries into which an adherent fluid may be injected. Silicone rubber is a preferred material for the main body and for the adherent fluid which may be vulcanized.
    Type: Grant
    Filed: July 20, 1992
    Date of Patent: June 14, 1994
    Assignee: Sani-Tech, Inc.
    Inventor: Paul R. Dupont, Jr.
  • Patent number: 5176411
    Abstract: A three-part, re-usable coupling for making a sanitary connection to a flexible hose is disclosed which includes a coupling body of corrosion-resistant material having a central channel for laminar flow. At one end of the central bore, the coupling body is provided with a standard sanitary conduit flange-face. At the other end the coupling body is provided with a notched, substantially cylindrical barb for insertion into the lumen of the flexible hose. An externally threaded section lies between the two ends of the coupling body. A split collar or sleeve which is at least as long as the barb has an externally tapered surface and a cylindrical, internal, threaded surface applies uniform compression to the end-portion of the flexible hose through which the barb is inserted. A nut having an internal taper that matches the external taper of the split collar makes up on the external threads of the coupling body urging the split collar to firmly secure the hose to the barb.
    Type: Grant
    Filed: December 17, 1990
    Date of Patent: January 5, 1993
    Assignee: Sani-Tech Incorporated
    Inventor: Paul R. DuPont, Jr.