Hydraulic oscillator

Details Hydraulic oscillator Hydraulic oscillator

1978-05-18

1981-07-28

Maslousky, Paul E.

Motors: expansible chamber type

Cyclically operable

Working member controlled motive fluid for distributor motor

91337, F01L 2506, F01L 3108

Patent

active

042803969

ABSTRACT:
A hydraulic oscillator in which a piston reciprocates between first and second positions in a cylinder. A reversing pilot valve controls fluid flow to ends of the cylinder and flow through first and second pilot passages control the reversing operation of the pilot valve. The cylinder has a pilot channel or groove coupled to a pilot supply line. The piston has (1) a first logic channel for fluidly coupling the pilot channel and first pilot passage as the piston approaches the second position and (2) a second logic channel for fluidly coupling the pilot channel and second pilot passage as the piston approaches the first position thereby to alternately reverse the pilot valve and produce the reciprocation of the piston.

REFERENCES:
patent: 109980 (1870-12-01), Weinman
patent: 217952 (1879-07-01), Neff
patent: 3780621 (1973-12-01), Romell
patent: 3983788 (1976-10-01), Andersson et al.

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