Patent US4600152A successfully refreshed from Google Patents.
US4600152A
Expired / Lapsed
US
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Multiple intersection dripper
Assignee: Individual
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Filing: 1983-06-06
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Granted: 1986-07-15
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Expires: 2003-06-06
Abstract
Abstract A water irrigation emitter comprises a labyrinth in which the main flowpath is divided into a plurality of branches, and each of the branches is in turn divided into a plurality of sub-branches, the sub-branches being oriented such that the water flowing through each of the sub-branches of one branch intersect the water flowing through each sub-branch of the other branch at a plurality of intersection points. This to dissipates a substantial amount of the water energy to produce a low flow rate while still enabling the use of passageways of relatively large cross-section which are not susceptible to clogging. The flow rate may be further reduced by the provision of obstructions at the centers of each of the intersections.
Inventors
- 👤 Samuel Samueli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:49
CPC Classifications
A; A01; A01G; A01G25/00; A01G25/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
110 words
A water irrigation dripper including a pressure-dropping labyrinth for the water flowing from an inlet to an outlet of the dripper, said labyrinth including at least one section defining a main flowpath for the water, said main flowpath being divided into a plurality of at least two branches, each of said branches being divided into a plurality of sub-branches oriented such that the water flowing through each of the sub-branches of one branch intersects the water flowing through each sub-branch of the other branch at at least one intersection point, thereby to dissipate energy of said water before the water leaves the respective section and returns to the main flowpath.
Claim 2
Dependent Claim
110 words
A water irrigation dripper including a pressure-dropping labyrinth for the water flowing from an inlet to an outlet of the dripper, said labyrinth including at least one section defining a main flowpath for the water, said main flowpath being divided into a plurality of at least two branches, each of said branches being divided into a plurality of sub-branches oriented such that the water flowing through each of the sub-branches of one branch intersects the water flowing through each sub-branch of the other branch at at least one intersection point, thereby to dissipate energy of said water before the water leaves the respective section and returns to the main flowpath.
Claim 3
Dependent Claim
38 words
The dripper according to claim 1 wherein the water of each sub-branch of one branch intersects the water flowing through each sub-branch of the other branch at a pluraity of intersection points before returning to the main flowpath.
Claim 4
Dependent Claim
36 words
The dripper according to claim 1, wherein said sub-branches from each branch extend parallel to each other such that the sub-branches of one branch intersect all the sub-branches of the other branch at the same angle.
Claim 5
Dependent Claim
23 words
The dripper according to claim 1, wherein said sub-branches of one branch intersect the sub-branches of the other branch at an obtuse angle.
Claim 6
Dependent Claim
33 words
The dripper according to claim 1, wherein there is an obstruction at the center of each of said intersections effective to dissipate further energy of the water streams intesecting at the respective intersection.
Claim 7
Dependent Claim
15 words
The dripper according to claim 5, wherein each of said obstructions is of circular cross-section.
Claim 8
Dependent Claim
20 words
The dripper according to claim 5, wherein each of said obstructions is of generally polygonal cross-section and has concavely-curved sides.
Claim 9
Dependent Claim
16 words
The dripper according to claim 7, wherein each of said obstructions is of generally rectangular cross-section.
Claim 10
Dependent Claim
47 words
The dripper according to claim 1, wherein said main flowpath includes a plurality of said labyrinth sections connected in series with each other from the dripper inlet to the dripper outlet, each of said sections including said plurality of branches each divided into said plurality of sub-branches.
Claim 11
Dependent Claim
39 words
A dripper according to claim 1, wherein said dripper includes an outer cylinder member and an inner cylinder member, said labyrinth being defined by a grooved-outer surface of said inner member and the inner face of said outer member.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-07-14 | 1990-01-13 | 1990-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-14 | 1994-01-13 | 1994-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-14 | 1998-01-13 | 1998-07-15 | $7700.00 | Window Closed / Lapsed |