Power plants – Pressure fluid source and motor – Input pump and rotary output motor system having...
Reexamination Certificate
2007-05-15
2007-05-15
Lopez, F. Daniel (Department: 3745)
Power plants
Pressure fluid source and motor
Input pump and rotary output motor system having...
Reexamination Certificate
active
11081891
ABSTRACT:
In a hydrostatic continuously variable transmission, a hydraulic pump is linked to a hydraulic motor by a hydraulic closed circuit to change the capacity of the hydraulic motor so as to change the speed of a motorcycle continuously. A clutch device comprising a clutch valve for connecting and disconnecting a high pressure side oil passage and a low pressure side oil passage constituting the hydraulic closed circuit. A governor mechanism for generating governor force corresponding to the input rotation speed of the hydraulic pump and applying this governor force in the closing direction of the clutch valve. A spring for giving urging force in the opening direction of the clutch valve, and a buffer mechanism having a variable oil chamber and an oil pool chamber for easing the opening and closing movements of the clutch valve activated according to the governor force and the urging force.
REFERENCES:
patent: 3165892 (1965-01-01), Roberts
patent: 3364679 (1968-01-01), Osojnak
patent: 3704588 (1972-12-01), Trabbic
patent: 5353595 (1994-10-01), Hayashi et al.
patent: 6-42446 (1994-02-01), None
patent: 9-100909 (1997-04-01), None
patent: 2920772 (1999-04-01), None
Mitsubori Toshimasa
Nakamura Kazuhiko
Ozeki Takashi
Yoshida Yoshihiro
Hamre Schumann Mueller & Larson PC
Honda Motor Co. Ltd.
Lopez F. Daniel
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