Hydraulically operable linear motor

Details Hydraulically operable linear motor Hydraulically operable linear motor

1975-12-03

1977-05-03

Maslousky, Paul E.

Motors: expansible chamber type

Cyclically operable

Working member controlled motive fluid for distributor motor

91300, 91321, F01L 2504, F01B 718

Patent

active

040207463

ABSTRACT:
A hydraulically operable linear motor with a double-acting reciprocable piston in a cylinder, in which one side of the piston has connected thereto a piston rod so as to form with this one side an annular piston surface which is continuously exposed to a desired working pressure. The other side of the piston is by means of a hydraulically actuated control valve alternately exposed to the working pressure and to the pressure in an exhaust conduit. The pressure for actuating the valve spool of the control valve is generated in a conduit section which communicates with two annular grooves in the two cylinder sections separated from each other by the piston and adapted alternately to be closed off from the above mentioned conduit section. This conduit section communicates through throttles with the exhaust conduit. The annular groove located in that cylinder section which is defined by the annular piston surface and the cylinder end wall faced thereby communicates through a preloaded check valve with the exhaust conduit.

REFERENCES:
patent: 3322038 (1967-05-01), Dobson
patent: 3552269 (1971-01-01), Arndt
patent: 3774502 (1973-11-01), Arndt

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