Valves and valve actuation – Electrically actuated valve – With means to bias valve open
Patent
1994-12-05
1995-12-19
Hepperle, Stephen M.
Valves and valve actuation
Electrically actuated valve
With means to bias valve open
239 93, 2395338, 251 3005, 25112907, 25112916, F16K 3106
Patent
active
054762456
ABSTRACT:
In a pressure-compensated solenoid valve disposed in a passage for controlling communication therethrough a central valve housing part which includes a guide bore with an increased-diameter end section providing for a bore shoulder and a stepped control rod movably disposed in the guide bore and having an increased-diameter end portion received in the increased-diameter guide bore end section and a shoulder disposed opposite the guide bore shoulder so as to define an annular space therebetween, a first housing end part is disposed on the central housing part adjacent said increased-diameter guide bore and has an opening in alignment with the control rod and a second housing end part is disposed on the central housing part opposite the first housing end part and includes biasing means for biasing the control rod onto the opening in the first housing end part for closing the opening and electromagnetic means are provided for retracting the control rod to establish communication through the opening wherein the increased-diameter control rod section has a passage in alignment with the opening and extending to the annular space between the two shoulders to exert on the control rod a pressure force compensating for the force applied thereto by fluid at the opening controlled by the control rod.
REFERENCES:
patent: 647706 (1900-04-01), Robertshaw
patent: 2543010 (1951-02-01), Gardner
patent: 3253615 (1966-05-01), Armstrong
patent: 4618095 (1986-10-01), Spoolstra
patent: 4776518 (1988-10-01), Yamamoto
patent: 5007584 (1991-04-01), Rossignol
Bach Klans J.
Hepperle Stephen M.
Mercedes-Benz AG
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