Locking detent for corrugated tube

Details Locking detent for corrugated tube Locking detent for corrugated tube

1983-10-25

1985-04-09

Marcus, Stephen

Pipes and tubular conduits

Flexible

Corrugated

138154, F16L 906

Patent

active

045095604

ABSTRACT:
A strip of longitudinally corrugated thin sheet metal is spirally coiled to form a tube with adjacent border portions of successive convolutions overlapping each other with at least one corrugation in the overlying border portion of one convolution fitting into one corrugation of the underlying border portion of an adjoining convolution, and the interfitting crests are provided with circumferentially spaced locking detents each of which has a flattened central area flanked by crimps along its marginal portions that extend downwardly and outwardly in substantial abutment with the lowermost portions of the crests in which the detents are located.

REFERENCES:
patent: 3621884 (1971-11-01), Trihey
patent: 3738394 (1973-06-01), Westerbarkey
patent: 3858421 (1975-01-01), Wood
patent: 3863480 (1975-02-01), Meserole
patent: 4141385 (1979-02-01), Siegwart
patent: 4377188 (1983-03-01), Siegwart

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