Hollow flexible tubular body, process and apparatus for making t

Details Hollow flexible tubular body, process and apparatus for making t Hollow flexible tubular body, process and apparatus for making t

1975-06-09

1977-04-26

Artis, Henry K.

Pipes and tubular conduits

Flexible

138122, 138129, 138130, 138134, F16L 1100, F16L 1112, F16L 1114

Patent

active

040195392

ABSTRACT:
A hollow flexible tubular body which comprises at least one tubular layer. The layer is formed by adjacent helical windings having hooked edges and substantially flat sections. The turns of the helix do not show any spontaneous tendency to increase in diameter.

REFERENCES:
patent: 1763360 (1930-06-01), Kean
patent: 2168067 (1939-08-01), Jones
patent: 2731040 (1956-01-01), Warburton
patent: 3189052 (1965-06-01), Devaney
patent: 3500869 (1970-03-01), Skoggard et al.
patent: 3707170 (1972-12-01), Mazuir et al.

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