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US3887138A
Expired / Lapsed
US
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Irrigation device
Assignee: Individual
•
Filing: 1974-01-17
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Granted: 1975-06-03
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Expires: 1994-01-17
Abstract
Abstract A trickle or drip irrigation device comprises two hose like elements inserted into one another, one of said elements being constituted by a helically grooved hose of conventional design, the inner member being tightly held in the outer element, openings being provided in the inner element and an outflow or outflows at desired intervals, from the outer element.
Inventors
- 👤 Gideon Gilead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:17
CPC Classifications
A; A01; A01G; A01G25/00; A01G25/02; Y; Y02; Y02A; Y02A40/00; Y02A40/10; Y02A40/22
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
207 words
An irrigation device comprising: an elongated continuous hollow hose for conveying fluid through the interior thereof and formed with a helical fluid flow passage of predetermined pitch between the inner and outer surfaces thereof, said helical passage having an axis substantially coaxial with the longitudinal axis of said hose; a plurality of holes extending through said inner surface of said hose at predetermined spaced axial distances along said hose, each of said holes coupling the interior of said hose to said helical passage for fluid transmission therebetween; a plurality of fluid discharge ports extending through said outer surface of said hose each being disposed a predetermined axial distance along said hose from a respective one of said holes in said inner surface and each coupling said helical passage to the region exterior of said hose; whereby fluid flowing axially through the interior of said hose flows outwardly from said interior of said hose through each of said plurality of holes into said helical passage and thence through said helical passage for discharge through each of said plurality of ports, the fluid discharged from each of said ports being selectively determined by the axial length of said helical passage between respective adjacent ones of said holes and ports.
Claim 2
Dependent Claim
207 words
An irrigation device comprising: an elongated continuous hollow hose for conveying fluid through the interior thereof and formed with a helical fluid flow passage of predetermined pitch between the inner and outer surfaces thereof, said helical passage having an axis substantially coaxial with the longitudinal axis of said hose; a plurality of holes extending through said inner surface of said hose at predetermined spaced axial distances along said hose, each of said holes coupling the interior of said hose to said helical passage for fluid transmission therebetween; a plurality of fluid discharge ports extending through said outer surface of said hose each being disposed a predetermined axial distance along said hose from a respective one of said holes in said inner surface and each coupling said helical passage to the region exterior of said hose; whereby fluid flowing axially through the interior of said hose flows outwardly from said interior of said hose through each of said plurality of holes into said helical passage and thence through said helical passage for discharge through each of said plurality of ports, the fluid discharged from each of said ports being selectively determined by the axial length of said helical passage between respective adjacent ones of said holes and ports.
Claim 3
Dependent Claim
207 words
An irrigation device comprising: an elongated continuous hollow hose for conveying fluid through the interior thereof and formed with a helical fluid flow passage of predetermined pitch between the inner and outer surfaces thereof, said helical passage having an axis substantially coaxial with the longitudinal axis of said hose; a plurality of holes extending through said inner surface of said hose at predetermined spaced axial distances along said hose, each of said holes coupling the interior of said hose to said helical passage for fluid transmission therebetween; a plurality of fluid discharge ports extending through said outer surface of said hose each being disposed a predetermined axial distance along said hose from a respective one of said holes in said inner surface and each coupling said helical passage to the region exterior of said hose; whereby fluid flowing axially through the interior of said hose flows outwardly from said interior of said hose through each of said plurality of holes into said helical passage and thence through said helical passage for discharge through each of said plurality of ports, the fluid discharged from each of said ports being selectively determined by the axial length of said helical passage between respective adjacent ones of said holes and ports.
Claim 4
Dependent Claim
207 words
An irrigation device comprising: an elongated continuous hollow hose for conveying fluid through the interior thereof and formed with a helical fluid flow passage of predetermined pitch between the inner and outer surfaces thereof, said helical passage having an axis substantially coaxial with the longitudinal axis of said hose; a plurality of holes extending through said inner surface of said hose at predetermined spaced axial distances along said hose, each of said holes coupling the interior of said hose to said helical passage for fluid transmission therebetween; a plurality of fluid discharge ports extending through said outer surface of said hose each being disposed a predetermined axial distance along said hose from a respective one of said holes in said inner surface and each coupling said helical passage to the region exterior of said hose; whereby fluid flowing axially through the interior of said hose flows outwardly from said interior of said hose through each of said plurality of holes into said helical passage and thence through said helical passage for discharge through each of said plurality of ports, the fluid discharged from each of said ports being selectively determined by the axial length of said helical passage between respective adjacent ones of said holes and ports.
Claim 5
Dependent Claim
87 words
An irrigation device according to claim 1 wherein said elongated continuous hollow hose is formed of inner and outer coaxial tubes having confronting surfaces in tight contact, at least one of said tubes being formed with a helical groove in the respective confronting surface, thereby defining with said other confronting surface said helical fluid flow passage; the inner surface of said inner coaxial tube defining said inner surface of said hose, and said outer surface of said outer coaxial tube defining said outer surface of said hose.
Claim 6
Dependent Claim
45 words
An irrigation device according to claim 2 wherein said outer tube has an ungrooved inner surface and wherein said inner tube is formed with said helical groove, thereby defining a helical ridge of a diameter substantially equal to the inner diameter of said outer tube.
Claim 7
Dependent Claim
46 words
An irrigation device according to claim 2 wherein said inner tube has an ungrooved outer surface and wherein said outer tube is formed with said helical groove, thereby defining a helical ridge of an inner diameter substantially equal to the outside diameter of said inner tube.
Claim 8
Dependent Claim
62 words
An irrigation device according to claim 2 wherein said inner and outer tubes are each formed with a helical groove and each defining a helical ridge and a helical valley; said tubes being disposed such that the helical ridge of said outer tube is in tight contact with the helical ridge of said inner tube to define said helical fluid flow passage.
Claim 9
Dependent Claim
32 words
An irrigation device according to claim 1 and further including a plurality of removable stoppers selectively disposed within respective ones of said ports in said outer surface to prevent fluid discharge therefrom.
Claim 10
Dependent Claim
50 words
An irrigation device according to claim 2 wherein said outer tube is formed of a plurality of unconnected axially spaced sections, to define one or more sections at which the outer surface of said inner tube is exposed to the region exterior to said hose for discharge of fluid therefrom.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |