Variable orifice using an iris shutter

Details Variable orifice using an iris shutter Variable orifice using an iris shutter

1977-01-18

1978-06-13

Rosenthal, Arnold

Valves and valve actuation

Relatively movable valve elements form single port closure

138 45, F16K 3154, F16K 306

Patent

active

040944921

ABSTRACT:
A variable orifice forming mechanism utilizing an iris shutter arrangement adapted to control gas flow, conductance in vacuum systems, as a heat shield for furnace windows, as a beam shutter in sputtering operations, and in any other application requiring periodic or continuously-variable control of material, gas, or fluid flow.

REFERENCES:
patent: 2037663 (1936-04-01), Lalor
patent: 2321336 (1943-06-01), Tondreau
patent: 2649272 (1953-08-01), Barbato

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