Fluid motor with rotary output

Details Fluid motor with rotary output Fluid motor with rotary output

1986-08-20

1987-11-10

Hershkovitz, Abraham

Motors: expansible chamber type

Fluid supply through diverse paths to single expansible chamber

Selective cyclic and noncyclic operation or parking

91180, 91188, 91470, F01L 3302, F15B 1108

Patent

active

047049464

ABSTRACT:
A fluid motor for converting reciprocation of a piston within a cylinder to rotation by a crankshaft includes a valve for supplying a fluid to the cylinder and discharging the fluid therefrom. The valve comprises a rotary valve member rotatable with the crankshaft and a fixed valve body slidably in contact with the rotary valve member. When the motor stops, at least one-half portion of a fluid intake groove formed in the rotary valve member is positioned at one side, toward a direction opposite to the direction of rotation of the rotary valve member, of a position opposed to a cylinder connection port formed in the fixed valve body so that a sufficient amount of pressure fluid can be supplied to the cylinder at the start when the motor is initiated into operation again.

REFERENCES:
patent: 871660 (1907-11-01), Andrews
patent: 1554756 (1925-09-01), Peters
patent: 1989212 (1935-01-01), Pascolini
patent: 3022733 (1962-02-01), Krute
patent: 4094227 (1978-06-01), King
patent: 4183285 (1980-01-01), Stevenson
patent: 4286500 (1981-09-01), Stevenson

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