Electro-magnetically operated bidirectional two-way air valve

Details Electro-magnetically operated bidirectional two-way air valve Electro-magnetically operated bidirectional two-way air valve

1995-09-05

1996-07-30

Lee, Kevin

Valves and valve actuation

Electrically actuated valve

Balanced valve

251282, 251117, F16K 3102

Patent

active

055404120

ABSTRACT:
An electro-magnetically operated bidirectional two-way air valve capable of changing state at high pressure differentials or high flow rates in either direction has a body which defines a main bore in which an armature is slidably received. The body has a first port and a second port with a seat between them formed at the end of the main bore and a plastic valve element is secured to a neck portion of the armature to seat against the seat when the valve is closed. Frusto-conical surfaces are formed on the valve element and on the neck portion and a transversely extending pin across the main bore retains the armature in the main bore. In a second embodiment, an end of the armature tapers so as to reduce drag, a powder metal flow restrictor is provided in an axial bore in the armature to reduce shift speed and an elastomer bumper is provided to reduce operating noise.

REFERENCES:
patent: 2543010 (1951-02-01), Gardner
patent: 4852853 (1989-08-01), Toshio et al.
patent: 5238222 (1993-08-01), Sumida et al.
patent: 5314163 (1994-05-01), Bacardit
patent: 5328147 (1994-07-01), Stobbs
patent: 5377720 (1995-01-01), Stobbs et al.
Applicant's Exhibit 1, p. 141, "Directional Control Valves Series DS162C & DS162N" of Parker Motion & Control, Hydraulic Valve Division, Elyria, Ohio 44035, admitted prior art.
Applicant's Exhibit 2, p. 75, entitled "Check Valves Series CV081P and CV091P" of Parker Motion & Control, Hydraulic Valve Division, Elyria, Ohio 44035, admitted prior art.

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