Fluid switch

Details Fluid switch Fluid switch

1996-07-08

1997-08-05

Lee, Kevin

Valves and valve actuation

Electrically actuated valve

Solenoid having plural coils

251297, F15B 13044

Patent

active

056534213

ABSTRACT:
A fluid switch suitable for use as a fuel shut-off valve is disclosed. In one aspect, the fluid switch includes a housing defining a generally cylindrical bore and having an inlet port, an outlet port and a detent spring passage. A valve member having a spool portion and a detent portion is slidably disposed within the bore. The spool portion can selectively close or open the ports with respect to one another. A detent spring is inserted through the detent spring passage and across the bore to interfit with the detent portion of the valve member to maintain it in the open or closed position in the absence of control inputs. A solenoid core attached to the valve member and solenoid coils surrounding the housing may be provided for moving the valve member between the open and closed positions to operate the fluid switch.

REFERENCES:
patent: 2407184 (1946-09-01), Sparrow
patent: 4353394 (1982-10-01), Loup
patent: 4354526 (1982-10-01), Hodgson
patent: 4522373 (1985-06-01), Shelbourn et al.
patent: 4936346 (1990-06-01), Kugler
patent: 4946130 (1990-08-01), Kooiman
patent: 4989829 (1991-02-01), Bickel
patent: 5106053 (1992-04-01), Miller et al.
patent: 5242149 (1993-09-01), Sikkema
patent: 5314163 (1994-05-01), Bacardit

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