Pressure-resistant helical corrugated pipe

Details Pressure-resistant helical corrugated pipe Pressure-resistant helical corrugated pipe

1991-12-16

1994-05-31

Levy, Stuart S.

Pipes and tubular conduits

Reinforced

Corrugated

138121, 138138, F16L 916, F16L 1111

Patent

active

053160479

ABSTRACT:
A pressure-resistant helical corrugated pipe comprises a helical corrugated pipe wall formed by a top portion, opposite side wall portions and a bottom portion; and a continuous thin metal belt plate disposed at least in the top portion or the bottom portion and also in part or the whole of the opposite side wall portions. The metal belt plate serves as a constituent element for the pipe wall. A portion of the metal belt plate disposed at the top portion or the bottom portion has one or more reinforcement ribs and a connective portion for the metal belt plate is integrally formed of a synthetic resin material or rubber material.

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patent: 4523613 (1985-06-01), Fouss et al.
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patent: 4759389 (1988-07-01), Woo Suck
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patent: 4824502 (1989-04-01), Nagayoshi et al.
patent: 4860797 (1989-08-01), Richards et al.
patent: 4862924 (1989-09-01), Kanao
patent: 5007462 (1991-04-01), Kanao

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