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Title: 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:
 [1]
  1. (Mt. Lebanon, PA)
Issue Date:
OSTI Identifier:
863953
Patent Number(s):
4283079
Assignee:
United States of America as represented by United States (Washington, DC) OSTI
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 = {1981},
month = {1}
}

Patent:

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