Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1988-05-09
1990-03-06
Wityshyn, Michael
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
1562742, 1563043, 156294, 219535, 219541, 219544, 285 21, B29C 6534, H05B 344
Patent
active
049063138
ABSTRACT:
A fusion weld method and assembly for forming a fusion welded joint between abutting pipe sections having the same exterior diameter and having a predetermined melting temperature. The assembly includes an extruded welding collar having an interior surface fabricated to closely receive the inserted pipe sections. A welding sleeve comprising a pair of spaced apart sections is received within collar recesses dimensioned to place the sleeve in flush relationship with the collar interior and immediately adjacent the pipe sections. The welding sleeve sections are located on opposite sides of the pipe ends to isolate the pipe ends from their heating effect, and the connecting lead between the sections is recessed for the same reason. The close fit of the collar and sleeve sections with the pipe sections enables development of internal bonding pressures sufficient to constrain the wire turns of the sleeve sections against thermal drift, and to produce a fusion bond of adequate depth and continuity.
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R. W. Lyall & Company, Inc.
Wityshyn Michael
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