Patents by Inventor Fiorenzo Cigana

Fiorenzo Cigana 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).

  • Circuit for controlling rotational direction and rotational speed of an electric motor
    Patent number: 4942346
    Abstract: A motor is connected in series with a power supply through a reversing device for reversing the direction of rotation of the motor and a speed control circuit. The reversing device includes two switches normally in a standby position in which the supply circuit of the motor is open. A command device is capable of alternatively and temporarily switching the switches into an operating position, for starting the motor in the respective opposite directions of rotation, when it receives a signal to do so from detector elements which generate the signal only when they detect a condition of normal operation of the control device of the motor.
    Type: Grant
    Filed: June 22, 1989
    Date of Patent: July 17, 1990
    Assignee: Procond Elettronica S.p.A.
    Inventors: Giuseppe Ardit, Fiorenzo Cigana, Renzo Magris