Mechanical piston retention for free wheeling

Details Mechanical piston retention for free wheeling Mechanical piston retention for free wheeling

1975-04-21

1976-09-07

Freeh, William L.

Motors: expansible chamber type

Three or more cylinders arranged in parallel radial or...

Radially disposed cylinders

92 26, 92 30, F01B 1306

Patent

active

039787710

ABSTRACT:
A fixed displacement fluid motor or pump of the ball or roller piston type in which a plurality of axially or radially extending reciprocating pistons coact with a cam track to produce output motion or to generate pressure fluid output, respectively. A mechanical locking device, preferably in the form of an expansible retaining ring, is secured to each piston, being adapted to lock the piston in a fixed retracted position and out of contact with the cam in a tapered portion of the cylinder bore in modes of operation during which no motor or pump output is required.

REFERENCES:
patent: 2295961 (1942-09-01), Meyer
patent: 3166990 (1965-01-01), Hoffmann
patent: 3283668 (1966-11-01), Louhio
patent: 3733971 (1973-05-01), Sugimoto
patent: 3824899 (1974-07-01), Dzioba

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