Gas resupply valve with microscopic aperture for gas lasers

Details Gas resupply valve with microscopic aperture for gas lasers Gas resupply valve with microscopic aperture for gas lasers

1987-09-30

1989-03-21

Scott, Jr., Leon

Coherent light generators

Particular active media

Gas

372 61, 372 37, H01S 322

Patent

active

048151009

ABSTRACT:
There is disclosed herein several gas resupply valves for replenishment of lost gas in gas lasers in general and argon ion lasers in particular. The first embodiment uses a valve which controls flow of gas into a metering volume. The metering volume has an aperture therein which is microscopically small and which has a diffusion constant for gas moving through the aperture which is less than the time the valve is held open. The second embodiment uses the same general structure, but separates the soft sealing member of the valve from the solenoid core which moves to open and close the valve. The soft sealing member is attached to the valve body and supported above a valve seat surrounding the opening of the metering volume. The third embodiment uses a thin diaphragm which overlies a flat surface of the valve body in which are formed an input port and an output port. A solenoid applies pressure against the diaphragm to cause it to flatten against the flat surface thereby sealing the valve.

REFERENCES:
patent: 3566304 (1971-02-01), Neusel et al.
patent: 3789320 (1974-07-01), Hepburn
patent: 4224579 (1980-09-01), Marlett et al.
patent: 4232274 (1980-11-01), Tokudome et al.
patent: 4445217 (1984-04-01), Acharekar et al.
patent: 4502145 (1985-02-01), Allen et al.
patent: 4646310 (1987-02-01), Koseki

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