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Drip Tape Manufacturers & Engineers, Inc.

Daniel W Delmer

William A Delmer

Robert J Delmer

John W Erickson

Ray Charles Emmons

An irrigation hose splice and method of making the same that permits used irrigation hose to be reinstalled and retrieved in the same manner as new irrigation hose. The method of splicing includes providing two segments of unjoined irrigation hose. Inserting a heat shield into a first segment to prevent its inner circumferential surface from fusing together when the first hose segment is later fused with a second hose segment. Inserting the first hose segment into the second hose segment, creating an area where the two segments overlap. Appyling heat and compression simultaneously at the overlapping area to fuse together the first and second hose segments, creating an irrigation hose splice which is composed of material from the first hose segment and the second hose segment that have been fused together.

Irrigation hose splice and method of making same

A constant-flow drip irrigation tape hose includes a primary flow path communicating water along the length of the hose. A secondary drip-flow path leads from the primary flow path to an emitter site outwardly of the hose. The hose is formed with a pair of variably spaced apart walls at least one of which is formed with a continuously-open channel defining part of the secondary flow path. A second variable-area part of the secondary flow path is defined by radial spacing of the pair of walls from one another. At least one of the pair of walls is responsive to internal water pressure in the primary flow path to open and close the variable-area part of the secondary flow path in response, respectively, to decreasing and increasing water pressure in the hose. A plurality of emitter sites are spaced regularly along a length of the hose. Consequently, the hose has at least one pressure range within which it provides a nearly constant drip-flow irrigation rate to plants of a row crop as the water pressure within the hose decreases over the length of an elongate run of hose.

Method of making constant flow irrigation tape

Constant-flow irrigation tape and method of making

A multiple chamber hose for drip irrigation and the like, with a primary chamber for fluid flow therethrough and a multiple layer section having a primary layer, a mid layer and a secondary layer, and with a secondary chamber in said mid layer for fluid flow therethrough. The primary layer is positioned between the primary chamber and the mid layer, and the secondary layer is positioned between the mid layer and the exterior. The hose includes an inlet opening for fluid flow from the primary chamber to the secondary chamber and an outlet opening for fluid flow from the secondary chamber to the exterior. The invention also includes methods of making such a hose.

Multiple chamber drip irrigation hose made from a single strip

A length of plastic with a copper powder adhered to a surface thereof along its length for control of growth of algae and the like, and method and apparatus for producing such a product. A multi-chamber drip irrigation hose for distributing water and the like having a larger primary tube and a smaller secondary tube of flexible water impermeable material and joined at a common wall having passages facing the interior of the primary tube in communication with the interior of the secondary tube and having passages leading from the interior of the secondary tube to the exterior, with a copper powder adhered to at least one inner surface along the length of the tube, with the powder being in a continuous layer or in a non-continuous layer. In one embodiment the copper powder is applied from a reservoir onto a plastic film by brushing directly onto the film or by transfer from a rotating wheel carrying the copper powder. In other embodiments, the power is applied during the formation of the plastic film as by extruding, blowing or molding.

Drip irrigation devices and plastic films with copper powder incorporated

A multiple chamber hose for drip irrigation and the like, with a primary chamber for fluid flow therethrough and a multiple layer section having a primary layer, a mid layer and a secondary layer, and with a secondary chamber in the mid layer for fluid flow therethrough. The primary layer is positioned between the primary chamber and the mid layer, and the secondary layer is positioned between the mid layer and the exterior. The hose includes an inlet opening for fluid flow from the primary chamber to the secondary chamber and an outlet opening for fluid flow from the secondary chamber to the exterior.

Multiple chamber drip irrigation hose

A multichamber drip irrigation hose for distributing water and the like. A hose having a larger primary tube and a smaller secondary tube joined at a common wall, with passages in the common wall for flow from the primary tube to the secondary tube, and with passages in the secondary tube for flow from the secondary tube to the exterior. The tubes of the hose are formed from a strip of sheet material having opposite edges with one or both edges folded on itself to form a thicker edge, and with the strip folded and bonded to both thicker edges or one thicker edge and to the strip along a line spaced from the thicker edge, to form the primary and secondary tubes. Various fold configurations are possible.

Growing community of inventors

Huntington Beach, CA, United States of America

Daniel W Delmer