Spool type valve

Details Spool type valve Spool type valve

1994-03-16

1995-06-06

Michalsky, Gerald A.

Fluid handling

Systems

Multi-way valve unit

251900, 277165, F15B 1304, F16K 1107

Patent

active

054213673

ABSTRACT:
A spool type valve for minimizing degradation in sealing ability is provided. The spool type valve comprises a spool 30 having land portions 36A-36E. The spool is inserted into a sleeve 20 for slidable movement along the axis thereof so as to define a plurality of fluid passages 23, 24 in the sleeve. The spool controllably opens and closes ports 21A-21E of the sleeve. Each land portion includes a slider member 38 and an O-ring 37. The slider member is divided into plural elements and is in slidable engagement with the inner wall 22 of the sleeve. The O-ring is adapted to resiliently urge the slider member against the inner wall of the sleeve. The slider member includes an annular groove 39B into which the O-ring 37 is fitted.

REFERENCES:
patent: 3115701 (1963-12-01), Jones
patent: 3554235 (1971-01-01), Opel et al.
patent: 3996965 (1976-12-01), Peters
patent: 4646785 (1987-03-01), Ruedle et al.
patent: 4876857 (1989-10-01), Feltz et al.
patent: 4986168 (1991-01-01), Geffroy et al.
patent: 5095949 (1992-03-01), Day
Communication from EP for corresponding European patent application-European Search Report (Dec. 7, 1994).
Abstract for Sliding Valve for Carburetor, vol. 13, No. 143 (M-811) 7 Apr. 1989 & JP-A-63 306 265 (Asahi Glass) 14 Dec. 1988.

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