O-ring solenoid valves

Details O-ring solenoid valves O-ring solenoid valves

1978-12-22

1981-09-22

Rosenthal, Arnold

Valves and valve actuation

With correlated flow path

With mounting or support

251141, F16K 3106

Patent

active

042905796

ABSTRACT:
A drastically simplified directional solenoid valve with top fluid inlet and bottom fluid exhaust ports employs a conventional electrical bobbin coil with a solenoid iron conveniently secured thereto in line with a simplified axially movable solenoid plunger in an operable relationship with a simple seal at the exhaust port, preferably of O-ring configuration, between a first plunger engaged position inside the seal to maintain valve normally closed when the solenoid coil is not energized electrically and a second position with plunger retracted from the seat of the seal when the coil is electrically energized turning said iron into a magnet with pull force capable of lifting the plunger from the seat to render valve open to exhaust while the plunger is being held against the iron until the coil becomes de-energized at which time the plunger is automatically shifted back to the first valve closed position against the seat by either the drag forces fluid flow provides or by additional biasing force of a compression spring acting over the plunger constantly downward, the plunger, the coil and the O-ring seal in combination comprising a simple flow control means through the valve axially from the top inlet to the bottom exhaust.

REFERENCES:
patent: 2616452 (1952-11-01), Clay et al.
patent: 3420260 (1969-01-01), Wisniewski
patent: 3529806 (1970-09-01), Kozel
patent: 3731881 (1973-05-01), Dixon et al.
patent: 3800832 (1974-04-01), Umphenour et al.
patent: 3856260 (1974-12-01), Giordano
patent: 4102526 (1978-07-01), Hargraves

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