Locking detent for corrugated tube
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United States of America Patent
Stats
-
Apr 9, 1985
Grant Date -
N/A
app pub date -
Oct 25, 1983
filing date -
Oct 25, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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