Flexible tube

Details Flexible tube Flexible tube

1979-04-20

1980-08-12

Aegerter, Richard E.

Pipes and tubular conduits

Flexible

Corrugated

239 33, 229 7S, F16L 1106, A47G 1922

Patent

active

042168015

ABSTRACT:
A tube of thermoplastic material having a flexible zone intermediate the ends thereof which may be flexed without substantial springback. The flexible zone comprises a series of circumferential grooves having an annular floor from which two opposed groove sides convergently extend.

REFERENCES:
patent: 2582249 (1952-01-01), Hendel
patent: 2822194 (1958-02-01), Fentress
patent: 2876801 (1959-03-01), November
patent: 3324895 (1967-06-01), Johnson
patent: 3326695 (1967-06-01), Neuhauser
patent: 3343567 (1967-09-01), Mulligan
patent: 3346187 (1967-10-01), Mueller
patent: 3409224 (1968-11-01), Harp et al.
patent: 3721269 (1973-03-01), Choate
patent: 3738394 (1973-06-01), Westerbarkey
patent: 3780944 (1973-12-01), Zubalik
patent: 3929165 (1975-12-01), Diebolt et al.

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