Method of producing reinforced ribbed tubes
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United States of America Patent
Stats
-
Dec 18, 1990
Grant Date -
N/A
app pub date -
Mar 3, 1988
filing date -
Jul 3, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The method of reinforcing a structure formed by interengaging the edges of ribbed strip (1) formed of a plastics material to form a helically wound tube, the strip (1) comprising a plurality of the ribs (2) spaced apart and upstanding from a base (24), characterized by engaging on the strip (1) a non-planar reinforcing member (10), and locking the reinforcing member (10) to the strip to form an attached strength member to attain lateral stability of the ribs.
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