Directional control valve having a plurality of switching positi

Details Directional control valve having a plurality of switching positi Directional control valve having a plurality of switching positi

1990-08-03

1991-12-24

Michalsky, Gerald A.

Fluid handling

Systems

Multi-way valve unit

91464, 251113, F15B 1301

Patent

active

050743350

ABSTRACT:
A directional control valve is provided which can be switched into one of its switching positions only after the operator has supplied an additional signal.

REFERENCES:
patent: 959022 (1910-05-01), Luna
patent: 2723681 (1955-11-01), MacGlashan
patent: 3011519 (1961-12-01), Brinkel
patent: 3215163 (1963-11-01), Henderson
patent: 3457951 (1969-07-01), Williams
patent: 3667501 (1972-06-01), Snoy et al.
patent: 3677281 (1972-07-01), Tennis
patent: 3823739 (1974-07-01), McMullan
patent: 4793378 (1988-12-01), Loeffler et al.

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