Pressure control apparatus

Details Pressure control apparatus Pressure control apparatus

1974-10-04

1976-09-28

Rosenthal, Arnold

Fluid handling

Systems

Multi-way valve unit

13762544, 137605, 137612, 251138, 251139, F16K 3110

Patent

active

039825620

ABSTRACT:
An electrically-operated pressure control apparatus is adapted to perform switching and actuating functions and is capable of operating in response to high pressure or in response to an absence of pressure, that is, a vacuum. The apparatus includes: a first pressure conduit, a second pressure conduit, a third pressure conduit, a coil assembly and an armature assembly. The armature assembly is adapted to be operated electromagnetically when the coil assembly is energized. The armature assembly includes a sealing lever, an armature lever, a return spring, and a pivot means. The sealing lever has sealing means, preferably at one end thereof, adapted to open and close a first passageway in the first pressure conduit, and adapted to close and open a second passageway in the second pressure conduit. The effective, operating length of the armature lever is greater than the effective, operating length of the sealing lever. As a result, the armature assembly has a mechanical advantage resulting from the ratio of the length of the armature lever to the length of the sealing lever.

REFERENCES:
patent: 2850258 (1958-09-01), Lazich
patent: 2912012 (1959-11-01), Klingler
patent: 2993149 (1961-07-01), Persons
patent: 3036808 (1962-05-01), Fox
patent: 3532121 (1970-10-01), Sturman
patent: 3586287 (1971-06-01), Knobel
patent: 3692057 (1972-09-01), Barnd

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