Helium pressure seal for a cryogenic refrigerator

Details Helium pressure seal for a cryogenic refrigerator Helium pressure seal for a cryogenic refrigerator

1987-10-22

1989-06-27

Griffin, Donald A.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

62 6, F02F 1100, F25B 900

Patent

active

048422878

ABSTRACT:
A pressure seal used for containing helium within a cryogenic refrigerator, which utilizes a linear drive assembly. A deformable gasket is used to seal the enclosing elements of the linear drive assembly to reduce helium leakage. Concentrically serrated members compress onto opposite sides of the soft metal gasket to form labyrinthine sealing grooves therein.

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patent: 4418918 (1983-12-01), Nicoll
patent: 4616860 (1986-10-01), Faria et al.

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