Motors: expansible chamber type – With motive fluid valve – Inlet fluid supplemented by controlled fluid pressurized in...
Patent
1999-03-24
2000-12-19
Lopez, F. Daniel
Motors: expansible chamber type
With motive fluid valve
Inlet fluid supplemented by controlled fluid pressurized in...
91441, 91447, F15B 11024
Patent
active
06161467&
ABSTRACT:
A fluid control system including a control valve providing a simple, easy to use regeneration capability in association with a pump, a tank, and a double acting actuator having a first actuating chamber and a second actuating chamber. The control valve has a first actuating chamber port connected to the first actuating chamber, a second actuating chamber port connected to the second actuating chamber, a tank port connected to the tank, a first pump port and a second pump port. The control valve includes a connecting passage connecting the first pump port and the second pump port to the pump, and is operable in a first position to allow fluid flow from the pump through the first pump port and the first actuating chamber port to the first actuating chamber and fluid flow from the second actuating chamber through the second actuating chamber port and the tank port to the tank. For regeneration, the control valve member is movable from the first position to a second position to allow the fluid flow from the second actuating chamber port to be diverted to the second pump port such that the fluid flow can pass through the connecting passage to the first pump port and through the first actuating chamber port to the first actuating chamber of the actuator.
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A'Hearn Michael A.
Hajek, Jr. Thomas J.
Marcott Tony L.
Tolappa Srikrishnan T.
Burrows J. W.
Caterpillar Inc.
Lopez F. Daniel
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