Device for controlling a longitudinally movable driving means

Details Device for controlling a longitudinally movable driving means Device for controlling a longitudinally movable driving means

1977-02-17

1980-03-25

Maslousky, Paul E.

Motors: expansible chamber type

Fluid supply through diverse paths to single expansible chamber

Position responsive

91 29, 91361, 91448, F15B 1316, F01B 2504

Patent

active

041944348

ABSTRACT:
A device for controlling both the displacement of, and the transmittal of force by, a longitudinally movable driving apparatus comprising a piston rod which is hydraulically movable inside a cylinder, an emitter and receiver for ultrasonic waves, which are transmitted between a movable and a fixed part of the driving apparatus, a logic circuit and a controllable source of force, said receiver being electronically connected to said controllable source of force via said logic circuit.

REFERENCES:
patent: 2755966 (1956-07-01), Lindars
patent: 3365624 (1968-01-01), Komendera
patent: 3521535 (1970-07-01), Oelrich
patent: 3522764 (1970-08-01), Biber et al.

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