Power plants – Pressure fluid source and motor – Condition responsive control of motive fluid flow
Reexamination Certificate
2006-02-07
2008-11-25
Kershteyn, Igor (Department: 3745)
Power plants
Pressure fluid source and motor
Condition responsive control of motive fluid flow
C060S431000, C060S488000
Reexamination Certificate
active
07454905
ABSTRACT:
A clutch mechanism for a hydrostatic continuously variable transmission has a hydraulic circuit including a high pressure oil path for feeding working oil from a hydraulic pump to a hydraulic motor and a low pressure oil path for feeding working oil from the hydraulic motor to the hydraulic pump. The clutch mechanism is located between the hydraulic pump and the hydraulic motor. A clutch valve is arranged on the transmission shaft and is slid by a centrifugal governor to cause the oil paths to be shortened. A cam plate member is arranged on the transmission shaft. A roller is engaged with the cam plate member and is moved outwardly in a diametrical direction by a centrifugal force. A roller bearing member receives a roller pressing force through outward motion of the roller. A pressure plate and shaft of the roller bearing member are separately formed and thereafter integrally formed.
REFERENCES:
patent: 5575151 (1996-11-01), Hayashi et al.
patent: 2005/0144940 (2005-07-01), Yoshida et al.
patent: 2005/0198952 (2005-09-01), Yoshida et al.
patent: 1 226 607 (1966-10-01), None
patent: 2004-70331 (2004-03-01), None
Mitsubori Toshimasa
Yoshida Yoshihiro
Birch & Stewart Kolasch & Birch, LLP
Honda Motor Co. Ltd.
Kershteyn Igor
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