Seal for permitting transfer of tape from one pressure region to a region of substantially different pressure

Patent · 31 December 1976

OSTI ID:862769

Carter, H Kennon ^[1]; Mlekodaj, Ronald L ^[1]

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1. Oak Ridge, TN

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.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN
• DOE Contract Number: W-7405-ENG-26
• Assignee: United States of America as represented by United States Energy (Washington, DC)
• Patent Number(s): US 4008899
• OSTI ID: 862769
• Country of Publication: United States
• Language: English

Related Subjects

/277/
10
allowing
atmospheric
atmospheric pressure
differentially
elastomer
element
exit
final
flexible
flexible tape
fluid
implanted
passes
permitting
pool
pressure
pressure region
prior
provided
pulled
pump
pumped
rapid
region
removal
samples
seal
seal element
slit
substantially
surface
tape
thence
torr
transfer
utilized
vacuum
vacuum pump
vacuum region
vacuum seal
volume