Patents by Inventor Bogdan A. Ghibu

Bogdan A. Ghibu 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).

  • High speed variable reluctance motor with equal tooth ratios
    Patent number: 4947066
    Abstract: A variable reluctance motor having untapered stator teeth and more rotor teeth than stator teeth. Two stator teeth are formed on each stator pole. The rotor tooth ratio (of tooth width to gap between teeth width) is equal to the stator tooth ratio for the two teeth on each stator pole. The rotor tooth ratio is in the range of about 0.70 to about 0.90, preferably about 0.78. With this configuration the motor has very low torque ripple. The stator teeth are magnetically saturated, so the motor can be operated at current levels above the saturation point, producing a linear torque to current function and high output torque.
    Type: Grant
    Filed: November 1, 1988
    Date of Patent: August 7, 1990
    Assignee: Servo Products Co.
    Inventors: Bogdan A. Ghibu, Michael F. Bent