Pipes and tubular conduits – With flow regulators and/or baffles – Restrictors
Patent
1979-11-15
1982-08-31
Stephan, Steven L.
Pipes and tubular conduits
With flow regulators and/or baffles
Restrictors
239542, B05B 1500
Patent
active
043467377
ABSTRACT:
For use in drip irrigation, a tube of flexible material such as plastic is comprised of an elongated strip having first and second side edges. The strip is rolled on itself with the edges parallel and with the interior of one side edge secured longitudinally to the exterior of the strip well spaced from the other side edge. This leaves an interior flap free of but closely spaced from the interior of the tube. There is a series of relatively large holes through the tube overlying the flap.
REFERENCES:
patent: 4009832 (1977-03-01), Tiedt
patent: 4047995 (1977-09-01), Leal-Diaz
Stephan Steven L.
The Regents of the University of California
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