Precision fluid dispense valve

A micro dispense valve arrangement for accurately dispensing minute quantities of a fluid. The valve arrangement interfaces an enclosed interior region under pressure with an exterior region of less pressure through an orifice opening. The orifice wall is tapered from interior to exterior to bound a...

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Bibliographic Details
Main Authors LORBER; HAROLD W, HORCHOS; LEONARD A
Format Patent
LanguageEnglish
Published 25.12.1984
Edition3
Subjects
ACTUATING-FLOATS
BLASTING
COCKS
DEVICES FOR VENTING OR AERATING
ENGINEERING ELEMENTS AND UNITS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
LIGHTING
MECHANICAL ENGINEERING
TAPS
THERMAL INSULATION IN GENERAL
VALVES
WEAPONS
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Summary:A micro dispense valve arrangement for accurately dispensing minute quantities of a fluid. The valve arrangement interfaces an enclosed interior region under pressure with an exterior region of less pressure through an orifice opening. The orifice wall is tapered from interior to exterior to bound a frustoconical region constricting toward the exterior to accommodate a magnetizable pellet or ball. The ball is held in its seated position against the orifice wall by permanent magnets imbedded in the wall. An AC coil surrounding the orifice opening acts when energized to cause the ball to move between its seated or closed position and a non-magnetizable screen in its open position. The frequency and duration of applied positive and negative pulses driving the coil act to control the on/off fluid flow duty cycle of the valve.
Bibliography:Application Number: US19820347843