Patents by Inventor Yozo Nakamura

Yozo Nakamura 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).

  • Piston stroke control device for free piston type oscillating compressors
    Patent number: 4613285
    Abstract: In a free piston type oscillating compressor, closed spaces separate from gas springs are provided, and pressures of the closed spaces are regulated, whereby the amplitude, and central position of the stroke, of a free piston can be precisely controlled.
    Type: Grant
    Filed: April 2, 1985
    Date of Patent: September 23, 1986
    Assignee: Hitachi, Ltd.
    Inventors: Eiji Sato, Tamio Fukuda, Masaharu Ishii, Mitsuru Nakamura, Yozo Nakamura
  • Constant velocity universal joint
    Patent number: 4192154
    Abstract: A constant velocity universal joint of the three-roller type, capable of exactly transmitting power at constant velocity, comprises two drive members, one of which includes three yoke pins with respective roller means. Each roller means comprises an inner movable member adapted to rotate about the axis of the associated yoke pin and move axially of the pin, and an outer movable member disposed outside of the inner movable member and tiltable with respect to the rotational axis of the inner movable member. The other drive member includes guide grooves for guiding the outer movable members of the roller means along the rotational axis of the drive member itself.
    Type: Grant
    Filed: October 20, 1977
    Date of Patent: March 11, 1980
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Yozo Nakamura, Morio Ohshina