Motors: expansible chamber type – With motive fluid valve – Electrically operated
Patent
1994-02-25
1995-06-27
Look, Edward K.
Motors: expansible chamber type
With motive fluid valve
Electrically operated
91465, 91DIG1, 92136, F15B 13044, F01B 900
Patent
active
054270120
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.
REFERENCES:
patent: 4538644 (1985-09-01), Knutson et al.
patent: 4574686 (1986-03-01), Budzich
patent: 4632013 (1986-12-01), Frigon
patent: 4651627 (1987-03-01), Stewart
patent: 4753071 (1988-06-01), Sugden
patent: 4754693 (1988-07-01), Teltscher
patent: 5018431 (1991-05-01), Gray et al.
patent: 5148735 (1992-09-01), Veletovac
Berndt Dennis L.
Frigon Richard J.
McIntyre Allan E.
Stronczek Steven J.
Look Edward K.
Nguyen Hoang
Sprague Devices, Inc.
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