Patents by Inventor Masatoshi Koyanagi

Masatoshi Koyanagi 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).

  • Alternating current generator for a car
    Patent number: 4492885
    Abstract: An alternating current generator for a car comprises the first centrifugal fan which is fixed to one end of the rotor and has a diameter smaller than that of the rotor, the first ventilating hole for feeding a coolant air which is formed in the end portion in the axial direction of the bracket in the side of the centrifugal fan, the second ventilating hole for discharging the coolant air which is formed in the cylindrical portion of the bracket in which the first ventilating hole is formed, the second centrifugal fan which is fixed to the other end of the rotor and has a diameter larger than that of the rotor, the third ventilating hole for feeding a coolant air which is formed in the end in the axial direction of the other bracket and the fourth ventilating hole for discharging a coolant air which is formed in the cylindrical portion of the other bracket.
    Type: Grant
    Filed: March 16, 1982
    Date of Patent: January 8, 1985
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yutaka Kitamura, Yoshihisa Kitora, Masatoshi Koyanagi