Power plants – Pressure fluid source and motor – Input pump and rotary output motor system having...
Reexamination Certificate
2006-10-10
2006-10-10
Lopez, F. Daniel (Department: 3745)
Power plants
Pressure fluid source and motor
Input pump and rotary output motor system having...
Reexamination Certificate
active
07117672
ABSTRACT:
A pump and motor distribution valve formed by a hydraulic closed circuit for connection between a pump and a motor. In a hydraulic non-stage transmission CVT including a swash plate plunger type hydraulic pump P and a swash plate plunger type hydraulic motor M connected to each other through a hydraulic closed circuit, a pump swash plate member is driven to rotate. A pump cylinder and a motor cylinder are connected to each other and disposed in a connected state on an output shaft. A motor swash plate, restricted in rotation, is oscillated, and the swash plate angle can be regulated variably. A pump-side spool rotatable as one body with the pump swash plate member and a motor-side spool maintained fixedly are inserted in a valve hole formed in the output shaft to penetrate through the output shaft in the axial direction. A hydraulic closed circuit includes the spools and a plurality of communication oil passages formed in the pump cylinder, the motor cylinder and the output shaft.
REFERENCES:
patent: 5353595 (1994-10-01), Hayashi et al.
patent: 5575151 (1996-11-01), Hayashi et al.
patent: 6-2753 (1994-01-01), None
patent: 7-88884 (1995-09-01), None
Kanno Yoshihisa
Okuzaki Hideo
Sakakibara Kenji
Birch & Stewart Kolasch & Birch, LLP
Lopez F. Daniel
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