Open cryogenic microwave test chamber

Details Open cryogenic microwave test chamber Open cryogenic microwave test chamber

1991-01-04

1991-10-01

Capossela, Ronald C.

Refrigeration

Storage of solidified or liquified gas

Including cryostat

338 99S, 374176, 505866, 505891, F25B 1900

Patent

active

050521837

ABSTRACT:
A cryogenic microwave test chamber consists of a dry-sample receiving char which is partly immersed in liquid nitrogen. Waveguides from either end of the interior of the dry chamber are connected to and sealed to outgoing waveguides in regions immersed in the liquid nitrogen. Dry nitrogen is introduced through the waveguide and is circulated through the dry chamber to prevent condensation therein during cooling. A heat conductive metal tube surrounds the dry chamber and is spaced therefrom and acts as a heat barrier. Waveguide flanges on the opposite ends of the dry chamber slidably seal the chamber.

REFERENCES:
patent: 3441881 (1969-04-01), Weissman
patent: 3845424 (1974-10-01), Martens
patent: 3975695 (1976-08-01), Hartman
patent: 4498046 (1985-02-01), Faris et al.
patent: 4571954 (1986-02-01), Roberts et al.

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