Valves and valve actuation – Electrically actuated valve
Patent
1991-03-26
1992-04-28
Rosenthal, Arnold
Valves and valve actuation
Electrically actuated valve
25112908, 310 13, 310 27, F16K 3108, H02K 3318
Patent
active
051080729
ABSTRACT:
The moving coil actuator of a pressure regulator has two threaded adjustment screws each mounted parallel to the actuator's path and which project through a limit surface of a carrier for the moving oil actuator. Both adjusting screws can be rotated by means of a tool, but their mounting prevents them from being moved longitudinally. Each of the adjustment screws carries a limit element, one on each side of the carrier's limit surface. The position of each of the limit elements on its adjustment screw is adjustable by means of an internal thread. In the preferred embodiment, each adjustment screw is partly enveloped by a projection on the limit element carried by the other adjustment screw, by which each limit element is secured against rotation during adjustment. The limit elements independently limit the stroke of the moving coil at each end by blocking movement of the limit surface when the actuator reaches its desired limit.
REFERENCES:
patent: 3417268 (1968-12-01), Lace
patent: 3430538 (1969-03-01), Weiss
patent: 4544129 (1985-10-01), Ichiryu et al.
patent: 4555645 (1985-11-01), Atkinson
Honeywell Inc.
Rosenthal Arnold
Schwarz Edward
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