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Patent applications and USPTO patent grants for Hapeman; Martin Jay.The latest application filed is for "tractive effort control method and system for recovery from a wheel slip condition in a diesel-electric traction vehicle".
Patent | Date |
---|---|
Tractive effort control method and system for recovery from a wheel slip condition in a diesel-electric traction vehicle Grant 5,661,378 - Hapeman August 26, 1 | 1997-08-26 |
Lifting force responsive load control for electrically propelled earthmoving vehicles Grant 4,017,739 - Hapeman , et al. April 12, 1 | 1977-04-12 |
Motorized wheel brake system Grant 3,892,300 - Hapeman , et al. July 1, 1 | 1975-07-01 |
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