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US 9,527,267 B2Granted
Delivery tube for irrigation and fertilization system and method for manufacturing same
AssigneeResponsive Drip Irrigation, LLC
InventorsJanice K Gould, David A Conklin
Life of this patent
Estimating the term…
Abstract
The invention is directed generally to improvements in irrigation and fertilization assessment and delivery. More specifically, embodiments of the invention provide an improved fluid delivery tube, method to manufacture such tube, and systems that include such tube. The delivery tube is beneficial at least because it minimizes the life cycle cost of a responsive delivery tube.
Claims15
A delivery tube, comprising:
- a substrate, a portion of the substrate being treated with a hydrophilic polymer, the substrate including nonwoven polyethylene;
- and
- a backer welded to the substrate at a first weld area and a second weld area, the first and second weld areas extending over the functional length of the delivery tube, the backer including nonwoven polyethylene, the delivery tube being configured such that the substrate and the backer are each disposed along a functional length of the delivery tube, a lumen of the delivery tube being formed between at least a portion of the substrate and at least a portion of the backer, the portion of the substrate being treated with the hydrophilic polymer excluding the first and second weld areas.
A delivery tube, comprising:
- a substrate;
- and
- a backer welded to the substrate at a first weld area and a second weld area, the first and second weld areas extending over the functional length of the delivery tube, the delivery tube being configured such that the substrate and the backer are each disposed along a functional length of the delivery tube, a lumen of the delivery tube being formed between at least a portion of the substrate and at least a portion of the backer, each of the first and second weld areas including a first and second row of intermittent welds, the first row of intermittent welds being staggered with respect to the second row of intermittent welds.
A delivery web, comprising:
- a substrate;
- and
- a backer welded to the substrate at a plurality of weld areas, each of the plurality of weld areas extending over the functional length of the delivery web, the delivery web being configured such that the substrate and the backer are each disposed along a functional length of the delivery web,
- a first lumen of the delivery web being formed between a first portion of the substrate, a first portion of the backer, and a first and second of the plurality of weld areas,
- a second lumen of the delivery web being formed between a second portion of the substrate, a second portion of the backer, and a third and fourth of the plurality of weld areas, the web being configured such that fluid communication is not possible between the first lumen and the second lumen.
2 more elements
Dependencies are inferred from the claim text.