Flexible conduit construction and method of making the same

Details Flexible conduit construction and method of making the same Flexible conduit construction and method of making the same

1979-01-24

1981-01-06

Arola, Dave W.

Pipe joints or couplings

With casing, lining or protector

285114, 285226, 285236, 285138, 29446, 29455R, F16L 1112

Patent

active

042432537

ABSTRACT:
A flexible conduit construction having an inner flexible tubular member and having an outer flexible tubular member telescoped about the inner tubular member with the internal peripheral surface of the outer tubular member being in spaced relation from the other peripheral surface of the inner tubular member throughout the length of the inner tubular member to protect the same, a coiled compression spring being disposed about the inner tubular member in spaced relation therewith and radially engaging the internal peripheral surface of the outer tubular member to hold the internal peripheral surface of the outer tubular member in spaced relation relative to the outer peripheral surface of the inner tubular member even though the tubular members are disposed in various arcuately flexed conditions thereof. The outer tubular member is under axial tension between its opposed ends so as to radially contract and thereby be disposed in radial compression against the coiled compression spring.

REFERENCES:
patent: 592017 (1897-10-01), McCauley
patent: 1433537 (1922-10-01), Elliott
patent: 2300547 (1942-11-01), Guarnaschelli
patent: 2344582 (1944-03-01), Allee
patent: 3219365 (1965-11-01), Webb
patent: 3333871 (1967-08-01), Abbiati et al.
patent: 3369829 (1968-02-01), Hopkins
patent: 3773087 (1973-11-01), Katayama
patent: 3823249 (1974-07-01), Floessel
patent: 4063757 (1977-12-01), Fuhrmann

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