Patents by Inventor Shuichi Odaka

Shuichi Odaka 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).

  • Squirrel-cage type rotor and method for its manufacture
    Patent number: 4760300
    Abstract: When the slotted conductor 1e and the end rings 1d of the squirrel-cage type rotor core 1 are to be formed, molten aluminum is filled in them at a flow rate of 1.5 m/sec. or below, and then the molten aluminum is solidified under a pressure as high as 400 kg/cm.sup.2 or above, whereby improved density of aluminum as solidified is attained in a range of from 2.64 to 2.70 g/cm.sup.3. On account of this, there can be effectively obtained a squirrel-cage type rotor with improved torque characteristic, quality and operational reliability, thus realizing reduction in size and weight of the motor.
    Type: Grant
    Filed: March 4, 1987
    Date of Patent: July 26, 1988
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Akio Yoshida, Kenji Kawaguchi, Enkichi Oura, Takashi Okada, Shuichi Odaka