Patents by Inventor Jean Arnoult

Jean Arnoult 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).

  • Gas regulating valve
    Patent number: 4781216
    Abstract: In a gas flow regulating valve, the needle (37) axially shifted by a rod (40) includes a recess (70) which is of variable depth and cooperates with an expanding sealing element (43). The valve is provided with a safety closure means comprising a valve member (33) which has a spring (35) and whose displacements are controlled by a free connection tube (30).
    Type: Grant
    Filed: February 5, 1988
    Date of Patent: November 1, 1988
    Assignee: L'Air Liquide
    Inventors: Jean Arnoult, Gerard Loiseau, Maurice Molozay