Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1982-01-21
1983-12-06
Moon, Charlie T.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
29421R, 29523, 29727, 29237, 72 58, B23P 1526, B21D 3904, B21D 3908
Patent
active
044184573
ABSTRACT:
A process and apparatus for joining a tube into a tube sheet opening. After a tube is inserted into a tube sheet opening, compression and subsequent radial expansion of an elastomeric material inside the tube causes the elastomer to radially expand the tube wall creating an interference fit between the tube and inner wall of the tube sheet opening. A portion of the elastomer positioned exterior to the tube sheet face expands to a greater radial diameter than the portion of the elastomer within the tube sheet opening resulting in radial expansion of the tube wall toward the tube sheet face to create a sealing effect between the tube and tube sheet.
REFERENCES:
patent: 2535403 (1950-12-01), Froggatt
patent: 3432916 (1969-03-01), Fisher et al.
patent: 4006619 (1977-02-01), Anderson
patent: 4068372 (1978-01-01), Kamohara et al.
patent: 4152821 (1979-05-01), Scott
patent: 4235013 (1980-11-01), Vallmer
patent: 4320568 (1982-03-01), Herrod et al.
patent: 4343170 (1982-08-01), Hufton
patent: 4387507 (1983-06-01), Kelly
Carpenter John W.
Cities Service Company
Moon Charlie T.
Rushton George L.
Sproule Robert H.
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