Servovalve employing a rotatable feedback linkage

Details Servovalve employing a rotatable feedback linkage Servovalve employing a rotatable feedback linkage

1997-11-25

1998-12-15

Michalsky, Gerald A.

Fluid handling

Systems

Multi-way valve unit

91374, 91382, 13762564, F15B 1343

Patent

active

058486127

ABSTRACT:
The invention is a mechanical-type position-sensing and feedback system employed between a main stage spool valve and a pilot stage spool valve of an electro-hydraulic servovalve. The feedback mechanism makes use of a rotatable feedback link that directly senses the position of the slide of the main stage valve and transforms a linear motion of the slide into a linear movement of the sleeve of the pilot stage valve. The feedback link has an elongated body and is adapted for rotation about its body's longitudinal axis.

REFERENCES:
patent: 2463931 (1949-03-01), Wyckoff
patent: 2969808 (1961-01-01), Horlacher
patent: 3000363 (1961-09-01), Hayner et al.
patent: 3046945 (1962-07-01), Hayner
patent: 3653409 (1972-04-01), Brannon
patent: 3875849 (1975-04-01), Patel
patent: 4011891 (1977-03-01), Knutson et al.
patent: 5573036 (1996-11-01), Porter et al.

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