Pressure-resistant helical corrugated pipe

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

1989-11-22

1993-03-09

Bryant, III, James E.

Pipes and tubular conduits

Reinforced

Corrugated

138121, 138122, 138133, 138134, 138153, F16L 916, F16L 906

Patent

active

051919168

ABSTRACT:
A pressure-resistant helical corrugated pipe comprises a helical corrugated pipe wall having a top portion, opposite side wall portions extending from the top portion and a bottom portion extending from the side wall portions and disposed closed to the axis of the pipe; and belt plates which are formed separately from each other and made of a thin metal. The belt plates are disposed respectively at the side of the top portion and the side of the bottom portion as constituent elements for the pipe wall. The opposite edges of the two metal belt plates are disposed in abutted relation or in spaced opposed relation at the opposite side wall portions. The two metal belt plates are interconnected by connective portions which are made of a synthetic resin or rubber.

REFERENCES:
patent: 1478185 (1923-12-01), Sundh
patent: 1746701 (1930-02-01), Kimmich
patent: 3198873 (1965-08-01), Ryan et al.
patent: 4337800 (1982-07-01), Carlson et al.
patent: 4838317 (1989-06-01), Andre et al.
patent: 4860797 (1989-08-01), Richards et al.
patent: 4862924 (1989-09-01), Kanao
patent: 4976289 (1990-12-01), Umemori et al.

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