Patents by Inventor Nobuto Ohnuma

Nobuto Ohnuma 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).

  • Motor and production method of motor
    Patent number: 6700253
    Abstract: The present invention is a motor which has a motor casing (5) and a reduction gearing casing (7) integrally formed, a hole (8) formed on a portion shared by these casings, through which an output shaft (3a) of a rotor (3) extends from the motor casing side to the reduction gearing casing side, and a lubrication oil (9) filling the reduction gearing casing. And, a method for producing a motor comprises the step of charging a resin (11) into and curing it in the motor casing to adhere the resin to a coil of an armature and the inner surface of the motor casing. Besides, the motor casing (5) has a first casing member (510), a second casing member (520) and a third casing member (530) for covering a control section (4), and the first casing member is assembled with the second casing member, and the first casing member is assembled with the third casing member.
    Type: Grant
    Filed: January 18, 2002
    Date of Patent: March 2, 2004
    Assignee: Tokyo R & D Co., Ltd.
    Inventors: Nobuto Ohnuma, Toru Yosizawa, Osamu Watanabe