Patents by Inventor Sadayoshi Narusawa

Sadayoshi Narusawa 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).

  • Actuating apparatus and actuator
    Patent number: 5646466
    Abstract: First and second stationary driving coils are disposed about drive shaft means on which magnetized rotor means are mounted so as to exert on the drive shaft means output torques 90 degrees out of phase with each other. Coupling means connect the drive shaft means to an output shaft so as the combine the output torques. Sinusoidal driving signals for the driving coils are generated by Hall devices or other means synchronized to the drive shaft means.
    Type: Grant
    Filed: July 8, 1994
    Date of Patent: July 8, 1997
    Assignees: Tamron Co., Ltd., Nihon Mini Motor Co., Ltd.
    Inventors: Takayoshi Noji, Sadayoshi Narusawa