Method of mechanically prestressing a tubular apparatus

Details Method of mechanically prestressing a tubular apparatus Method of mechanically prestressing a tubular apparatus

1984-06-27

1985-09-03

Moon, Charlie T.

Metal working

Method of mechanical manufacture

Assembling or joining

29446, 29455R, 29523, 138148, 165 57, B23P 900

Patent

active

045383375

ABSTRACT:
A method of prestressing a tubular apparatus having coaxial inner and outer metal tubes which are connected to each other at axially spaced locations. After the inner and outer tubes are connected to each other so that the tubular apparatus may be heat-treated or otherwise processed before it is prestressed, the diameter of at least a portion of the inner tube is increased so that it is shortened to thereby establish a prestressed condition between the inner and outer tubes with the inner tube under tension and the outer tube under compression.

REFERENCES:
patent: 2289401 (1942-07-01), Yost
patent: 2693026 (1954-11-01), Simpelaar
patent: 2924245 (1960-02-01), Wilson
patent: 3156042 (1964-11-01), Reed
patent: 3246394 (1966-04-01), Meyer
patent: 3571907 (1971-03-01), Watson
patent: 3608640 (1971-09-01), Wellhite
patent: 3693665 (1972-09-01), Veerling et al.
patent: 4375843 (1983-03-01), Itzinger

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