Composite pipe with integral socket

Details Composite pipe with integral socket Composite pipe with integral socket

1998-05-22

1999-11-30

Kashnikow, Andres

Pipes and tubular conduits

Combined

With end structure

138141, F16L 916, F16L 1100

Patent

active

059924691

ABSTRACT:
A composite pipe comprising a corrugated external pipe and a smooth internal pipe possesses a socket which, at its bottom, adjoins the internal pipe and the external pipe by an expanded section. Subsequent to the expanded section, the socket comprises a smooth-walled and substantially single-walled section which is again followed by a composite pipe section having an internal pipe section and an external pipe section with at least two annular corrugation crests.

REFERENCES:
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patent: 4362187 (1982-12-01), Harris et al.
patent: 4779651 (1988-10-01), Hegler et al.
patent: 4819970 (1989-04-01), Umehara
patent: 5320797 (1994-06-01), Hegler et al.
patent: 5348051 (1994-09-01), Kallenbach
patent: 5405569 (1995-04-01), Lupke
patent: 5472659 (1995-12-01), Hegler et al.
patent: 5609713 (1997-03-01), Kime et al.
patent: 5803132 (1998-09-01), Lupke
German Search Report.

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