Patents by Inventor Etienne Hochain

Etienne Hochain 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).

  • Butterfly valve
    Patent number: 4154426
    Abstract: The valve closure element has an annular peripheral groove opening outwardly onto the periphery of the closure element. An annular sealing element has an annular heel portion disposed in the groove. The latter has an inner end face whose diameter is less than the inside diameter of the heel portion. The groove is defined laterally by two confronting annular faces of the closure element which have a substantially rectilinear generatrix and grip the heel portion so as to prevent relative movement of the heel portion and closure element.
    Type: Grant
    Filed: January 23, 1978
    Date of Patent: May 15, 1979
    Assignee: Pont-a-Mousson S.A.
    Inventors: Jean Santy, Etienne Hochain, Andre Schneider
  • Butterfly valve
    Patent number: 4083529
    Abstract: The valve closure element has an annular peripheral groove opening outwardly onto the periphery of the closure element. An annular sealing element has an annular heel portion disposed in the groove. The latter has an inner end face whose diameter is less than the inside diameter of the heel portion. The groove is defined laterally by two confronting annular faces of the closure element which have a substantially rectilinear generatrix and grip the heel portion so as to prevent relative movement of the heel portion and closure element.
    Type: Grant
    Filed: December 3, 1975
    Date of Patent: April 11, 1978
    Assignee: Pont-a-Mousson S.A.
    Inventors: Jean Santy, Etienne Hochain, Andre Schneider