Patents Assigned to Nippo Sangyo Kabushiki Kaisha Co Ltd
  • Torque limiter for paper feeding device of office machine and the like
    Patent number: 4785688
    Abstract: A torque limiter for an office machine includes a planetary differential. Its sun and ring gear are limited in their degree of rotational speed difference by a hysterisis magnetic coupling. The hysterisis coupling is formed as two concentric cylinders with space between them. Selected portions of the hysterisis coupling may be magnetized to alter the coupling's characteristics.
    Type: Grant
    Filed: March 27, 1987
    Date of Patent: November 22, 1988
    Assignee: Nippo Sangyo Kabushiki Kaisha Co Ltd
    Inventors: Takeshi Shiozaki, Atsuo Takeuchi
  • One-way clutch
    Patent number: 4770279
    Abstract: A one-way clutch that employs spaced apart magnetic members to draw rollers into portions of a cam surface so that a shaft and race will rotate as one.
    Type: Grant
    Filed: March 27, 1987
    Date of Patent: September 13, 1988
    Assignee: Nippo Sangyo Kabushiki Kaisha Co Ltd
    Inventors: Takeshi Shiozaki, Yutaka Tokizane, Mitsuo Mizuno