Patents by Inventor Bernard Capaldi

Bernard Capaldi 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).

  • Axial gap squirrel cage induction electric motor
    Patent number: 4370582
    Abstract: The stator (21) of the motor is of annular form, with generally radial slots (22) which receive the energizing windings. The squirrel cage of the rotor has a magnetic component (16) and a conductive component comprising inner ring (10) and outer ring (12) joined by bars (14). The bars (14) are curved so as to follow a path with a higher radial component at the inner end than at the outer end. This reduces perceived noise by avoiding sharp registering of the rotor bars with the stator slots, and also by providing a more uniform ratio of magnetic to conductive material in the rotor at different radii around the rotor axis.
    Type: Grant
    Filed: October 9, 1980
    Date of Patent: January 25, 1983
    Assignee: Sealed Motor Construction Company, Limited
    Inventors: Roy W. Addicott, Bernard Capaldi