Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – Means joining flexible indefinite length or endless bodies...
Patent
1988-08-15
1990-11-13
Dawson, Robert A.
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
Means joining flexible indefinite length or endless bodies...
156156, 156158, 1563042, 1563046, 156502, 264248, B29C 6526, B29C 6518
Patent
active
049699725
ABSTRACT:
A device for welding tubular components of thermoplastic material. The device includes a heating device for generating the necessary melting temperature arranged at the circumference and at the abutting ends of the tubular components. The bag or casing is arranged in the region of the welded connection inside the tubular components. The bag or casing is capable of being expanded and pressed against the inner circumference of the tubular components. Pressing the casing against the inner circumference of the tubular components prevents the formation of a welding bead during the welding procedure and serves to generate a welding pressure. After welding has been carried out, the casing is radially contracted and removed from the tubular components.
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Dawson Robert A.
Georg Fischer AG
Yoder Michele K.
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