Ultra high vacuum seal arrangement
Abstract
Arrangement for demountably sealing two concentric metallic tubes in an ultra high vacuum system which facilitates remote actuation. A tubular seal includes integral spaced lips which circumferentially engage the metallic tubes. The lips plastically deform the metallic tubes by mechanical forces resulting from a martensite to austenite transformation of the tubular seal upon application of a predetermined temperature. The sealing force is released upon application of another temperature which causes a transformation from the stronger austenite to the weaker martensite. Use of a dual acting sealing ring and driving ring circumferentially contacting the sealing ring is particularly applicable to sealing larger diameter concentric metallic members.
- Inventors:
-
- Mt. Lebanon, PA
- Issue Date:
- OSTI Identifier:
- 863953
- Patent Number(s):
- 4283079
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B23 - MACHINE TOOLS B23P - OTHER WORKING OF METAL
F - MECHANICAL ENGINEERING F16 - ENGINEERING ELEMENTS AND UNITS F16L - PIPES
- DOE Contract Number:
- E(11-1)-3073
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- ultra; vacuum; seal; arrangement; demountably; sealing; concentric; metallic; tubes; facilitates; remote; actuation; tubular; integral; spaced; lips; circumferentially; engage; plastically; deform; mechanical; forces; resulting; martensite; austenite; transformation; application; predetermined; temperature; force; released; causes; stronger; weaker; dual; acting; driving; contacting; particularly; applicable; larger; diameter; seal arrangement; tubular seal; metallic tube; particularly applicable; predetermined temperature; larger diameter; vacuum seal; mechanical forces; mechanical force; /285/
Citation Formats
Flaherty, Robert. Ultra high vacuum seal arrangement. United States: N. p., 1981.
Web.
Flaherty, Robert. Ultra high vacuum seal arrangement. United States.
Flaherty, Robert. Thu .
"Ultra high vacuum seal arrangement". United States. https://www.osti.gov/servlets/purl/863953.
@article{osti_863953,
title = {Ultra high vacuum seal arrangement},
author = {Flaherty, Robert},
abstractNote = {Arrangement for demountably sealing two concentric metallic tubes in an ultra high vacuum system which facilitates remote actuation. A tubular seal includes integral spaced lips which circumferentially engage the metallic tubes. The lips plastically deform the metallic tubes by mechanical forces resulting from a martensite to austenite transformation of the tubular seal upon application of a predetermined temperature. The sealing force is released upon application of another temperature which causes a transformation from the stronger austenite to the weaker martensite. Use of a dual acting sealing ring and driving ring circumferentially contacting the sealing ring is particularly applicable to sealing larger diameter concentric metallic members.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 1981},
month = {Thu Jan 01 00:00:00 EST 1981}
}