Flexible tube for carrying heating or refrigerant fluids

Details Flexible tube for carrying heating or refrigerant fluids Flexible tube for carrying heating or refrigerant fluids

1986-09-05

1989-03-14

Cuchlinski, Jr., William A.

Pipes and tubular conduits

Flexible

Corrugated

138172, F16L 1104

Patent

active

048117617

ABSTRACT:
A flexible tube including a sheath having a corrugated outer surface wherein a path of intersection of the corrugated outer surface with a plane passing through a center axis of the tube corresponds to a curve having undulations defining a number of hollow portions and rounded zones interconnecting adjacent hollow portions. The rounded zones have at each point an osculating circle having a center situated on a same side of the sheath and a non-infinite radius of curvature. At least one laterally rigid outer reinforcing element fills the hollow portions to a height such that it reaches at least to the rounded zones, and the reinforcing element is non-adhering to walls of the sheath.

REFERENCES:
patent: 1179578 (1916-04-01), Sundh
patent: 1819175 (1931-08-01), James
patent: 4009735 (1977-03-01), Pinsky
patent: 4417603 (1983-11-01), Argy

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