Method for welding pipe pieces made of thermoplastics

Details Method for welding pipe pieces made of thermoplastics Method for welding pipe pieces made of thermoplastics

1994-03-02

1996-02-06

Vargot, Mathieu D.

Plastic and nonmetallic article shaping or treating: processes

Direct application of electrical or wave energy to work

Using direct contact of electrode or electrical wire with...

1563042, 1563043, 1563045, 1563046, 264248, 264249, 264DIG46, 425508, 425DIG13, B29C 6534

Patent

active

054894034

ABSTRACT:
In a method for connecting pipe pieces of corrugated pipes to form a pipe, which is to be used in particular as a protection pipe for communication cables or light wave guides, external pipe segments are formed by appropriate cutting in the vicinity of the external pipe portions, which external pipe segments are inserted into recesses of welding sleeves. These welding sleeves comprise an outer ring and an inner ring, the inner ring not projecting radially beyond the inner pipe portions into the pipe. At least one of the rings is welded with the external pipe segments.

REFERENCES:
patent: 4436987 (1984-03-01), Thalmann et al.
patent: 4670078 (1987-06-01), Thalmann et al.
patent: 4695335 (1987-09-01), Lyall
patent: 4855574 (1989-08-01), Lodder et al.
patent: 4933037 (1990-06-01), de Jong
patent: 5320697 (1994-06-01), Hegler et al.

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