Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1977-06-01
1978-09-12
Lanham, C.W.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
29463, 239592, 239600, 285419, 138171, 138170, 138157, 138156, 138164, B23P 1500
Patent
active
041125681
ABSTRACT:
This invention is a novel method for fabricating leak-tight tubular articles which have an interior flow channel whose contour must conform very closely with design specifications but which are composed of metal which tends to warp if welded.
The method comprises designing two longitudinal half-sections of the article, the half-sections being contoured internally to cooperatively form the desired flow passageway. Each half-section is designed with a pair of opposed side flanges extending between the end flanges and integral therewith. The half-sections are positioned with their various flanges in confronting relation and with elongated metal gaskets extending between the confronting flanges for the length of the array. The gaskets are a deformable metal which is fusion-weldable to the end flanges. The mating side flanges are joined mechanically to deform the gaskets and provide a longitudinally sealed assembly. The portions of the end flanges contiguous with the ends of the gaskets then are welded to provide localized end welds which incorporate ends of the gaskets, thus transversely sealing the assembly. This method of fabrication provides leak-tight articles having the desired precisely contoured flow channels, whereas various conventional methods have been found unsatisfactory.
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Carlson Dean E.
Crane Daniel C.
Hamel Stephen D.
Lanham C.W.
Lewis Fred O.
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