Power plants – Pressure fluid source and motor – With means purging – cleaning or separating undesirables from...
Patent
1995-06-26
1997-06-17
Lopez, F. Daniel
Power plants
Pressure fluid source and motor
With means purging, cleaning or separating undesirables from...
60460, 60464, 91420, F16D 3102
Patent
active
056386796
ABSTRACT:
The disclosure relates to a new valve and a hydraulic system incorporating such valve. A mode-selection assembly on the valve is adjustable between an open-loop position for system purging and a closed-loop position for normal system operation. A sealing member moves with the spool and with the mode-selection assembly in the open-loop position, the sealing member may be urged against a stationary abutment member in the valve. Such cooperative sealing member/abutment member contact blocks the closed-loop flow path and causes fluid to be "rerouted" to tank rather than back to the pump. The system is thereby temporarily converted to open-loop configuration for purging and is restored to closed-loop configuration by moving the mode-selection assembly to the closed-loop position. The new valve is particularly useful in hydraulic steering circuits for boats.
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IMO Industries Inc.
Lopez F. Daniel
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