Patents by Inventor Paul P. Spahr

Paul P. Spahr 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).

  • Check valves for fuel cartridges
    Patent number: 8196894
    Abstract: In accordance with different embodiments of the present invention, duckbill check valve 10, having an orifice 11, and conical check valve 12, having an orifice 13, are responsive to the differential pressure of fluid F as it flows between inlet 14 and outlet 16. In an innovative aspect of the invention, orifice 11 and orifice 13 each have a variable effective diameter. In one embodiment, the duckbill check valve 10 and conical check valve 12 have a conical end that is aligned with the direction of fluid flow. In another embodiment, the duckbill check valve 10 can have a conical end that faces the direction of fluid flow. A pin may traverse orifice 11 or 13.
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: June 12, 2012
    Assignee: Societe BIC
    Inventors: Paul P. Spahr, Andrew J. Curello
  • Check Valves for Fuel Cartridges
    Publication number: 20080160371
    Abstract: In accordance with different embodiments of the present invention, duckbill check valve 10, having an orifice 11, and conical check valve 12, having an orifice 13, are responsive to the differential pressure of fluid F as it flows between inlet 14 and outlet 16. In an innovative aspect of the invention, orifice 11 and orifice 13 each have a variable effective diameter. In one embodiment, the duckbill check valve 10 and conical check valve 12 have a conical end that is aligned with the direction of fluid flow. In another embodiment, the duckbill check valve 10 can have a conical end that faces the direction of fluid flow. A pin may traverse orifice 11 or 13.
    Type: Application
    Filed: March 14, 2008
    Publication date: July 3, 2008
    Applicant: Societe BIC
    Inventors: Paul P. Spahr, Andrew J. Curello