Hydraulic control valve with independently operable bypass valve

Details Hydraulic control valve with independently operable bypass valve Hydraulic control valve with independently operable bypass valve

1985-04-05

1986-02-18

Camby, John J.

Fluid handling

Systems

Supply and exhaust

91444, 91448, 91450, 13759614, 13759618, F15B 1108, F16K 1110

Patent

active

045706727

ABSTRACT:
A hydraulic sectional control valve includes separate pump pressure and function control spools. The spools may be actuated independently and sequentially to provide raising, holding and power down functions for earthmoving and construction vehicles. Additional function control spools may be added in the valve structure to provide multiple function control.

REFERENCES:
patent: 3216443 (1965-11-01), Schmiel
patent: 3464443 (1969-06-01), Tennis
patent: 3771424 (1973-11-01), Allen et al.

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