Electronically controlled fluid powered motor
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United States of America Patent
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-
Jun 27, 1995
Grant Date -
N/A
app pub date -
Feb 25, 1994
filing date -
Feb 25, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A reciprocating piston fluid powered motor which has a fluid inlet and a fluid outlet. Reciprocation of the piston is controlled by a reciprocable valve spool which communicates with the fluid inlet and fluid outlet. The valve spool cooperates with a valve slide which is shiftable on said valve spool to control spool reciprocation. Fluid flow through the fluid inlet and outlet is controlled by electrically actuated solenoid valves connected in flow communication to the fluid inlet and a park port. An electric pulse width modulating switch is connected to each solenoid valve and has a plurality of positions to enable the piston to reciprocate at continuous low and high speed as well as in an intermittent mode. The switch may also be connected to an air powered washer fluid pump to deliver cleaning fluid on command.
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