Solenoid controlled fluid flow valve

Details Solenoid controlled fluid flow valve Solenoid controlled fluid flow valve

1988-06-10

1991-01-01

Nilson, Robert G.

Valves and valve actuation

Fluid actuated or retarded

Pilot or servo type motor

137504, F16K 1706

Patent

active

049812815

ABSTRACT:
A remotely controllable fluid valve includes a solenoid-armature arrangement which functions as an electro-magnetic spring having improved force-displacement characteristics over a mechanical spring. The solenoid magnetizes a pair of axially spaced, sleevelike field poles. The armature is so shaped and initially positioned relative to the field poles that: as the armature, supported in one pole, moves further into the other pole, the axial magnetic force thereon decreases at a decreasing rate with the rate of decrease being greater at higher levels of solnoid energization.

REFERENCES:
patent: 3069846 (1962-12-01), Buescher
patent: 3791408 (1974-02-01), Saitou
patent: 3945399 (1976-03-01), Tirelli
patent: 4206781 (1980-06-01), Salter

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