Pipes and tubular conduits – Combined
Patent
1987-11-20
1989-02-28
Bryant, III, James E.
Pipes and tubular conduits
Combined
138128, 138178, 138 42, 239542, 239547, 405 47, F15D 114, B05B 1500
Patent
active
048076686
ABSTRACT:
A plastic drip irragation tape of unitary construction is disclosed that employs a water impervious polyethylene film folded lengthwise with the edges overlapped and joined together in a heat sealed seam to form a flat flexible conduit. A narrow preformed groove along one edge defines a small secondary conduit within the seam that resists deformation to maintain a consistent controlled drip rate along the tape. Breaks in the seam at regular intervals form inlets through which irrigation water flows from the main conduit into the secondary conduit and outlets through which the water is emitted from the secondary conduit to the soil.
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