Fluid motor apparatus

Details Fluid motor apparatus Fluid motor apparatus

1975-08-29

1977-07-26

Maslousky, Paul E.

Motors: expansible chamber type

Cyclically operable

Distributor in piston

91225, 91227, 91235, 91289, F01L 1512, F01L 2504, F01L 2102, F01B 718

Patent

active

040375200

ABSTRACT:
An improved fluid motor having only two moving components, a reciprocatable piston and a fluid actuated valve spool. The piston is supported for linear movement in a piston support bore of a barrel assembly, and is moved in alternating directions by the operation of selected porting of a pressure fluid selectively admitted against differential piston pressure faces. The valve spool is disposed in an inner bore in the piston and is alternately driven in opposing directions by automatically controlled and selective application of fluid pressure. The fluid motor experiences no mechanical impact between the valve spool and the piston.

REFERENCES:
patent: 181386 (1876-08-01), Winchester
patent: 931449 (1909-08-01), Mauss
patent: 1031340 (1912-07-01), Howard
patent: 2932175 (1960-04-01), May
patent: 3468222 (1969-09-01), Cordes et al.
patent: 3620126 (1971-11-01), Fuhrimann
patent: 3969984 (1976-07-01), Bouyoucos

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