Process and means for welding corrugated tubes and/or compound t

Details Process and means for welding corrugated tubes and/or compound t Process and means for welding corrugated tubes and/or compound t

1995-11-28

1998-06-30

Osele, Mark A.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

1562742, 156293, 1563042, 1563043, 1563046, 285 211, 285 212, 285903, B31F 506

Patent

active

057728240

ABSTRACT:
In a process for the connecting of plastic tubes the wall of which has a corrugated cross section by electro-thermal welding, filling cores of plastic are inserted in the corrugation troughs of the tubes to be connected on both sides of a welding joint in order to form a resting surface on the outer circumference of the tubes and an electric heating mat which surrounds the resting surface of all filling cores is placed on the resting surface.

REFERENCES:
patent: 4141576 (1979-02-01), Lupke et al.
patent: 4266997 (1981-05-01), Lippera
patent: 4702502 (1987-10-01), Shade et al.
patent: 4770442 (1988-09-01), Sichler
patent: 5072972 (1991-12-01), Justice
patent: 5320697 (1994-06-01), Hegler et al.
patent: 5386101 (1995-01-01), Steinmetz et al.
patent: 5458380 (1995-10-01), Kanao
patent: 5644832 (1997-07-01), Kanao

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