Pumps – Motor driven – Fluid motor
Patent
1998-03-03
2000-05-23
Thorpe, Timothy S.
Pumps
Motor driven
Fluid motor
F04B 3502
Patent
active
060659459
ABSTRACT:
A hydraulic engine employs dual cylinders and pistons of different diameter connected end-to-end in collinear alignment. Fluid from a pressurized source drives the large piston to transmit power to a crankshaft. An electromagnetic actuator, controlled by a distributor, opens a control valve, admitting fluid to the large cylinder. A hydraulic actuator closes the control valve, shutting off fluid flow. The hydraulic actuator responds to pressure drop when the large piston uncovers an exhaust port. Fluid drains to a tank, and the cycle repeats. The small piston recirculates fluid from the tank to the source.
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LaPointe Dennis G.
Thorpe Timothy S.
Torrente David J.
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