Double acting dynamic seal with E-shaped spring and L-shaped sea

Details Double acting dynamic seal with E-shaped spring and L-shaped sea Double acting dynamic seal with E-shaped spring and L-shaped sea

1977-03-09

1978-02-21

Ward, Jr., Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 48, 277164, 277165, 277194, 277DIG6, B65D 5300

Patent

active

040749088

ABSTRACT:
A relatively small bidirectional polymeric piston seal especially useful for cryogenic refrigerators having an E-shaped metallic spring retainer and two wound spring seal expanders positioned between two L-shaped polymeric seals. The L-shaped design permits the use of conventional tooling with high strength abrasive polymeric compounds while maintaining tighter tolerances during manufacture thereby keeping frictional resistance at a uniform level to produce longer wear life at the required high pressure forces in two directions.

REFERENCES:
patent: 701730 (1902-06-01), Irons
patent: 983201 (1911-01-01), Brussard
patent: 2350697 (1944-06-01), Petch
patent: 3099454 (1963-07-01), Walinski

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