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

Patent · Sat Jan 01 00:00:00 EST 1977

OSTI ID:862769

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

---

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 (United States)
• 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

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