High pressure seal

Details High pressure seal High pressure seal

1984-12-20

1987-12-15

Fields, Carolyn E.

Radiant energy

Invisible radiant energy responsive electric signalling

Including a radiant energy responsive gas discharge device

250385, 220 3, G01T 118

Patent

active

047135468

ABSTRACT:
A substrate penetrates a main seal in an ionization chamber filled with pressurized gas. In one form of the present invention, a second chamber is provided around the region of penetration. The substrate then also penetrates the second chamber. The second chamber is pressurized with a gas at a lower pressure than in the ionization chamber. Thus, the pressure differential across the main seal is lowered, thereby reducing the load on the main seal.

REFERENCES:
patent: 3244106 (1966-04-01), Guy
patent: 3616958 (1971-11-01), Mitchell
patent: 4394578 (1983-07-01), Houston et al.
patent: 4505115 (1985-03-01), Arbuckle
patent: 4570071 (1986-02-01), Sippel et al.

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