Seal for permitting transfer of tape from one pressure region to

Details Seal for permitting transfer of tape from one pressure region to Seal for permitting transfer of tape from one pressure region to

1976-01-27

1977-02-22

Smith, Robert I.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

F16J 1540

Patent

active

040088995

ABSTRACT:
A seal is provided for allowing a thin flexible tape to be pulled from a high vacuum region (less than 10.sup.-.sup.6 torr) into atmospheric pressure. The tape first passes through a slit in an elastomer and thence through a pool of vacuum pump fluid into a differentially pumped volume. A second slit in an elastomer is the final seal element prior to exit of the tape to atmospheric pressure. The vacuum seal is utilized in a system for the rapid removal of samples, implanted in the surface of the tape, from a vacuum system to atmospheric pressure.

REFERENCES:
patent: 2215449 (1940-09-01), Alexander et al.
patent: 2291248 (1942-07-01), Myers
patent: 2622041 (1952-12-01), Godley
patent: 3392700 (1968-07-01), Mallory
patent: 3668905 (1972-06-01), Schlunke

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