Patents by Inventor Jean Jolivet

Jean Jolivet 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).

  • Large-amplitude low-frequency vibrator
    Patent number: 5111697
    Abstract: A vibrator acting in a low frequency vibration domain, for fixing to and applying low frequency vibrations on a frame in a first predetermined direction along an axis X'X.
    Type: Grant
    Filed: February 12, 1991
    Date of Patent: May 12, 1992
    Assignee: Societe de Mecanique Magnetique S.A.
    Inventors: Helmut Habermann, Jean Jolivet
  • Auxiliary bearing having a graphite stator for a rotary shaft mounted on magnetic bearings
    Patent number: 4982126
    Abstract: The auxiliary bearing comprises a chromium steel rotor (2) mounted on the rotary shaft (1), a graphite stator (3) mounted on the frame (5) and disposed to face the rotor (2) and to leave clearance relative thereto which is narrower than the air gap in the magnetic bearings which constitute the main supports of the rotary shaft, a network (4) of liquid feed channels opening out into the empty space between the rotor (2) and the stator (3), and selective control means for controlling the supply of liquid through said network of feed channels. The auxiliary bearing may be of the radial clearance type or of the axial clearance type.
    Type: Grant
    Filed: March 31, 1989
    Date of Patent: January 1, 1991
    Assignee: Societe de Mecanique Magnetique S.A.
    Inventors: Jean Jolivet, Helmut Habermann