Profiled tube, corrugated hose or the like elongate portion with

Details Profiled tube, corrugated hose or the like elongate portion with Profiled tube, corrugated hose or the like elongate portion with

1997-04-11

1999-10-26

Hook, James F.

Pipes and tubular conduits

Flexible

Corrugated

138177, 138DIG11, F16L 1115

Patent

active

059710330

ABSTRACT:
In a profiled tube, corrugated hose or the like elongate portion of flexible material with mutually parallel peripheral grooves (20) and ridge rings (12) laterally delimiting same the peripheral grooves (20) are radially prolonged in the groove center (N) extending transversely to the longitudinal axis (A) of the elongate portion (10), by at least one recess (20.sub.a), forming a shoulder step (18), wherein the width (f) of a land ring (16) delimiting the recess towards the longitudinal axis is less than the groove width (i). The depth (q) of the groove recess (20.sub.a) is to approximately correspond to half the groove width (i). In addition there can be provided at least two groove recesses (20.sub.a) which are disposed on a common radial axis (M) and which each form a respective shoulder step (18).

REFERENCES:
patent: D24439 (1895-06-01), Ledward
patent: 1758495 (1930-05-01), Boyd
patent: 3041855 (1962-07-01), Hanlein
patent: 3559692 (1971-02-01), Mantelet
patent: 4562733 (1986-01-01), Kant
patent: 4650138 (1987-03-01), Grose
patent: 4690174 (1987-09-01), Jarvenkyla138121

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