Patents by Inventor Rene Ficheux

Rene Ficheux 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-powered elevator using a linear electric motor as counterweight
    Patent number: 4402386
    Abstract: An elevator system using a linear induction motor for propulsion. The linear induction motor is mounted in the elevator counterweight along with a battery, motor control equipment, and battery charger. The counterweight is guided by a tubular rail which acts as the motor armature.
    Type: Grant
    Filed: July 20, 1981
    Date of Patent: September 6, 1983
    Assignee: Otis Elevator Company
    Inventors: Rene Ficheux, Marcel Pavoz
  • Elevator motor control system for A.C. induction motor
    Patent number: 4068741
    Abstract: An alternating current induction motor control system suitable to employ the motor as a hoisting motor for an elevator. The motor includes a high speed winding and a low speed winding, the high speed winding being used for acceleration and the low speed winding for deceleration. The low speed winding is connected in such a way as to rotate the motor in a direction opposite to that in which the high speed winding rotated it. A motion detector is provided to prevent the elevator from moving in the opposite direction after being brought to a stop at a landing.
    Type: Grant
    Filed: February 19, 1976
    Date of Patent: January 17, 1978
    Assignee: United Technologies Corporation
    Inventors: Rene Ficheux, Francois Ronsin