Patents by Inventor Jean Vilbeuf

Jean Vilbeuf 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).

  • Seat with damped suspension system
    Patent number: 4272117
    Abstract: This sprung seat notably for off-road vehicles is mounted on the vehicle's frame and provided with elastic return means in the form of a hydropneumatic device associated with an automatic monitoring distributor adapted to be connected to the pressure fluid circuit of the vehicle and capable of regulating the fluid pressure in the hydropneumatic device as a function of the seat squab frame oscillation. The hydropneumatic device is constructed to eliminate suction and incorporates an adjustable valve means adapted to be set as a function of the weight of the occupant of the seat.
    Type: Grant
    Filed: July 6, 1978
    Date of Patent: June 9, 1981
    Assignee: Sifra
    Inventor: Jean Vilbeuf
  • Sprung seat for all vehicles
    Patent number: 4148518
    Abstract: This sprung seat notably for off-the-road vehicles is mounted on a base frame and provided with elastic return means in the form of a hydropneumatic device associated with an automatic monitoring distributor adapted to be connected to the pressure fluid circuit of the vehicle and capable of regulating the fluid pressure in the hydropneumatic device as a function of the seat squab frame oscillation. The hydropneumatic device is constructed to eliminate any mechanical frictional contact and incorporates adjustable valve means adapted to be set as a function of the weight of the occupant of the seat.
    Type: Grant
    Filed: April 22, 1977
    Date of Patent: April 10, 1979
    Assignee: Societe Sifra
    Inventor: Jean Vilbeuf