Patents by Inventor Henri Besnard

Henri Besnard 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).

  • Self cleaning valve for powdery, granular and pasty products
    Patent number: 4610430
    Abstract: The technical field of the invention is that of guillotine type valves for powdery, granular or pasty products.The technical problem posed consists in improving the valve disclosed in U.S. Pat. No. 4,356,838, so as to simplify the construction and maintenance thereof and to improve the operation thereof.According to the invention, the arms (7) of the plate (3) are removable, as well as the sleeve (23) force fitted into the external face of the orifice of the front and rear bodies of the valve. The internal face of each of the bodies (1, 2) is covered with a "duplex" seal (26) and the movable arms of the plate slide with respect to PTFE seals (16, 18). Finally, the abutment member (4) at the end of travel of the plate (3) is made retractable by means of a pneumatic or spring return device.
    Type: Grant
    Filed: July 9, 1985
    Date of Patent: September 9, 1986
    Assignees: Trouvay & Cauvin S.A., Aldo Morello
    Inventors: Henri Besnard, Daniel Fremau
  • Apparatus for indicating fluid flow
    Patent number: 4484536
    Abstract: A flow indicator has a pivoting flap fitted in ducting of a hydraulic installation which transports contaminated liquids. To permit the purge of a reservoir, the flap has an opening for air returning through the ducting. The opening prevents overpressure or vacuum in a circuit. The invention applies specifically to purge and vent circuits for nuclear power installations.
    Type: Grant
    Filed: March 5, 1982
    Date of Patent: November 27, 1984
    Assignee: Etablissements Trouvay and Cauvin S.A.
    Inventors: Jean Henocque, Henri Besnard