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Title: Internal pipe attachment mechanism

Abstract

An attachment mechanism for repairing or extending fluid carrying pipes, casings, conduits, etc. utilizing one-way motion of spring tempered fingers to provide a mechanical connection between the attachment mechanism and the pipe. The spring tempered fingers flex to permit insertion into a pipe to a desired insertion depth. The mechanical connection is accomplished by reversing the insertion motion and the mechanical leverage in the fingers forces them outwardly against the inner wall of the pipe. A seal is generated by crushing a sealing assembly by the action of setting the mechanical connection.

Inventors:
 [1];  [2];  [1];  [1];  [1];  [1]
  1. (Livermore, CA)
  2. (Pleasanton, CA)
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
869640
Patent Number(s):
5372391
Assignee:
United States of America as represented by United States (Washington, DC) LLNL
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
internal; pipe; attachment; mechanism; repairing; extending; fluid; carrying; pipes; casings; conduits; etc; utilizing; one-way; motion; spring; tempered; fingers; provide; mechanical; connection; flex; permit; insertion; desired; depth; accomplished; reversing; leverage; forces; outwardly; inner; wall; seal; generated; crushing; sealing; assembly; action; setting; mechanical connection; fluid carrying; inner wall; attachment mechanism; permit insertion; extending fluid; sealing assembly; /285/

Citation Formats

Bast, Richard M., Chesnut, Dwayne A., Henning, Carl D., Lennon, Joseph P., Pastrnak, John W., and Smith, Joseph A. Internal pipe attachment mechanism. United States: N. p., 1994. Web.
Bast, Richard M., Chesnut, Dwayne A., Henning, Carl D., Lennon, Joseph P., Pastrnak, John W., & Smith, Joseph A. Internal pipe attachment mechanism. United States.
Bast, Richard M., Chesnut, Dwayne A., Henning, Carl D., Lennon, Joseph P., Pastrnak, John W., and Smith, Joseph A. Sat . "Internal pipe attachment mechanism". United States. https://www.osti.gov/servlets/purl/869640.
@article{osti_869640,
title = {Internal pipe attachment mechanism},
author = {Bast, Richard M. and Chesnut, Dwayne A. and Henning, Carl D. and Lennon, Joseph P. and Pastrnak, John W. and Smith, Joseph A.},
abstractNote = {An attachment mechanism for repairing or extending fluid carrying pipes, casings, conduits, etc. utilizing one-way motion of spring tempered fingers to provide a mechanical connection between the attachment mechanism and the pipe. The spring tempered fingers flex to permit insertion into a pipe to a desired insertion depth. The mechanical connection is accomplished by reversing the insertion motion and the mechanical leverage in the fingers forces them outwardly against the inner wall of the pipe. A seal is generated by crushing a sealing assembly by the action of setting the mechanical connection.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {1}
}

Patent:

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