Perforated drainpipe and method of making same
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United States of America Patent
Stats
-
Dec 20, 1983
Issued Date -
N/A
app pub date -
Aug 13, 1980
filing date -
Feb 12, 1975
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A perforated drainpipe in which at least one sheet comprised of polymeric material is shaped in generally tubular configuration with adjacent edges thereof being slightly spaced apart to define therebetween a gap extending along the tubular sheet, and at least one ribbon comprised of polymeric material, which can be the same or different as that in the tubular sheet, helically wound around the tubular sheet, preferably by extrusion, and integrally bonded thereto so as to reinforce the same and maintain the shape of the same. The sheet or sheets can extend longitudinally, being bent or curved width-wise so as to have such tubular shape, with the gap extending longitudinally.
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Family
International Classification(s)
Cited Art Landscape
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