Fluid motor

Details Fluid motor Fluid motor

1981-12-18

1984-06-12

Maslousky, Paul E.

Motors: expansible chamber type

Working member moved by stored motive fluid charge

91 28, 91376R, F15B 2000, F15B 2100, F15B 910

Patent

active

044534507

ABSTRACT:
A fluid motor (10) having a housing (12) with first (14), second (16) and third (18) chambers therein. A first partition (22) separates the first chamber (14) from the second chamber (16). A second partition (24) separates the second chamber (16) from the third chamber (18). The third chamber (18) is connected to a source of fluid under pressure. A valve mechanism (91) controls the communication of the source of fluid between the second (16) and third (18) chambers. A poppet valve (42) allows the fluid to flow into the first chamber (14) from the second chamber (16). The first chamber (14) is connected to the third chamber (18) through a check valve (118). The valve mechanism (91) responds to an operator input signal by terminating fluid communication between the second (16) and third (18) chambers and initiating communicationof the second chamber (16) with the atmosphere to allow fluid to escape and create a pressure differential across the first (22) and second (24) partitions. This pressure differential holds the first partition (22) stationary but acts on the second partition (24) to develop an output force corresponding to the input signal. Should the source of fluid be interrupted, the stored fluid in chamber (14) flows into chamber (18) to assure for the continued development of an operational pressure differential.

REFERENCES:
patent: 3188920 (1965-06-01), Hager
patent: 3321916 (1967-05-01), Cripe
patent: 3482485 (1969-12-01), Abbott

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