Fluid controller having rotary/axial valving, and spring arrange

Details Fluid controller having rotary/axial valving, and spring arrange Fluid controller having rotary/axial valving, and spring arrange

1991-11-15

1992-11-10

Michalsky, Gerald A.

Fluid handling

Systems

Multi-way valve unit

60384, 91467, F15B 908

Patent

active

051615770

ABSTRACT:
A fluid controller (11) is provided of the type which controls the flow of fluid from a source to at least a first fluid pressure operated device. The controller is of the type including a primary, spool valve (39;39') and a follow-up sleeve valve (41;41'). The spool and sleeve are of the type in which relative rotation therebetween defines a main fluid path through a fluid meter (23), and in which axial movement of the sleeve (39') defines a parallel fluid path (FIG. 7) or an auxiliary fluid path. A neutral centering spring arrangement is provided including at least one compression spring (101) having its ends disposed in engagement with seat members (97,99) to bias the spool and sleeve toward their neutral rotary position. The compression springs (101) are disposed in annular grooves (93,95) defined by the sleeve and spool, respectively, with one of the grooves being configured to permit relative axial movement between the spool and sleeve, as the sleeve is displaced away from its neutral axial position (FIG. 6), or away from its first axial position (FIG. 9).

REFERENCES:
patent: 3819307 (1974-06-01), Uppal
patent: 4232708 (1980-11-01), Miller
patent: 5016672 (1991-05-01), Stephenson
patent: 5065793 (1991-11-01), Stephenson et al.
patent: 5080135 (1992-01-01), Stephenson
patent: 5115640 (1992-05-01), Stephenson et al.

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