Drip irrigation conduit and method of making the same
AssigneeRIS Irrigation Systems
InventorJohn M. Langa
Life of this patent
Estimating the term…
Abstract
An irrigation conduit comprising an extruded tube having a peripheral wall and at least one elongated passage and an elongated supply tube having an elongated supply passage. The supply tube is formed of sheet material joined together along longitudinally extending portions to form a seam. A region of the sheet material extends at least part way around the perimeter of the extruded tube, and the extruded tube is retained on such region of the sheet material. Transfer ports extend between the passages of the two tubes and discharge ports extend from the passage of the extruded tube to the exterior of the irrigation conduit.
Claims14
An irrigation conduit comprising:
- at least one elongated extruded secondary tube having a peripheral wall and at least one elongated secondary passage therein extending in the direction of elongation of the tube;
- a flexible sheet of water impervious material which is separate from the secondary tube;
- first means for attaching said secondary tube to the flexible sheet of water impervious material;
- second means other than said secondary tube for attaching longitudinally extending portions of said sheet to each other to form at least one seam and to provide at least one supply tube having a longitudinal supply passage with said secondary tube extending along the supply tube;
- the cross-sectional area of the supply passage being greater than the cross-sectional area of the secondary passage;
- transfer ports leading between said passages;
- and
- discharge ports leading from the secondary passage to the exterior of said secondary tube and said supply tube.
A method of making an irrigation conduit comprising:
- providing at least one elongated extruded secondary tube having a peripheral wall and at least one elongated secondary passage therein extending in the direction of the elongation of the tube;
- providing a flexible sheet of a water impervious material which is separate from the secondary tube;
- attaching said secondary tube to the flexible sheet of water impervious material to form a tube-sheet assembly;
- attaching longitudinally extending portions of said sheet to each other to form the sheet into at least one supply tube subsequent to said first mentioned step of attaching, said supply tube having a longitudinal supply passage with said secondary tube extending along the supply tube;
- forming transfer ports leading between said passages;
- and
- forming discharge ports leading from the secondary passage to the exterior of the irrigation conduit.
An irrigation conduit comprising:
- an elongated secondary tube of a first material having a peripheral wall and at least one elongated secondary passage therein, said first material being water impervious;
- an elongated supply tube having an elongated supply passage and at least one longitudinally extending seam, said supply tube including biodegradable sheet material which is a different material than said first material, the cross-sectional area of said supply passage being greater than the cross-sectional area of said secondary passage;
- means for retaining said secondary tube on the sheet material with the secondary tube extending along the length of the supply tube;
- a plurality of transfer ports extending between said passages;
- and
- a plurality of discharge ports extending from said secondary passage to a location outside said passages whereby water can flow from the supply passage through the transfer ports, the secondary passage and the discharge ports.
Dependencies are inferred from the claim text.