TREA

Shigeharu Arai

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Patents Grantslast 30 patents

  • Information Patent Grant

    Electromagnetic spring clutch
    • Patent number 5,687,822
    • Issue date Nov 18, 1997
    • Ogura Clutch Co., Ltd.
    • Shigeharu Arai
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Control circuits for electromagnetic coupling apparatus
    • Patent number 4,649,458
    • Issue date Mar 10, 1987
    • Ogura Clutch
    • Shigeharu Arai
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...