Dynamoelectric Machine (e.g., Motor, Generator, Etc.), Rotational System Or Device (e.g., Clutch, Rotor, Bearing, Etc.), Or Components Thereof Patents (Class 505/166)
  • Patent number: 5314868
    Abstract: A bearing device for supporting a rotary body relative to a fixed portion in a noncontact state includes a superconducting bearing assembly comprising an annular permanent magnet portion fixedly mounted on the rotary body concentrically therewith and an annular superconductor portion disposed as opposed to the permanent magnet portion. A magnetic bearing assembly is disposed axially away from the superconducting bearing assembly and comprises electromagnets for controlling the position of the rotary body with respect to two radial directions orthogonal to each other.
    Type: Grant
    Filed: August 6, 1992
    Date of Patent: May 24, 1994
    Assignee: Koyo Seiko Co., Ltd.
    Inventors: Ryoichi Takahata, Hirochika Ueyama