US4246936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe for trickle irrigation
Assignee: Individual
•
Filing: 1979-06-25
•
Granted: 1981-01-27
•
Expires: 1999-06-25
Abstract
Abstract A drip irrigation pipe for use aboveground having conical apertures in the wall of the pipe at spacings corresponding to the space between the plants to be irrigated. The apertures diverge from the inside to the outside of the wall, with a center line making an angle of between 14° to 30° to the axis of the pipe and oriented in the direction of the water flow. Water is supplied at drip irrigation pressure of 10-35 p.s.i.
Inventors
- 👤 Ephraim Luz, deceased
- 👤 heir by Cecilia Luz
- 👤 heir by Irit Luz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:25
CPC Classifications
A; A01; A01G; A01G25/00; A01G25/02; Y; Y02; Y02A; Y02A40/00; Y02A40/10; Y02A40/22
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
133 words
An improved pipe for aboveground trickle irrigation at water supply pressures of 10-35 p.s.i., having a longitudinal axis and a direction of fluid flow in said pipe along said axis, and including fluid discharging apertures in the pipe wall opening to the outer surface thereof at spacings conforming to the spacings of the plants to be irrigated, the improvement comprising: each of the apertures having a conical shape diverging from the inside to the outside of the pipe wall and having a center line at an angle of 14° to 30° to the longitudinal axis of said pipe in the direction of fluid flow, to cause the fluid discharged through each of said apertures to adhere to said outer surface of said pipe to effect dripping of said discharged fluid from said pipe.
Claim 2
Dependent Claim
133 words
An improved pipe for aboveground trickle irrigation at water supply pressures of 10-35 p.s.i., having a longitudinal axis and a direction of fluid flow in said pipe along said axis, and including fluid discharging apertures in the pipe wall opening to the outer surface thereof at spacings conforming to the spacings of the plants to be irrigated, the improvement comprising: each of the apertures having a conical shape diverging from the inside to the outside of the pipe wall and having a center line at an angle of 14° to 30° to the longitudinal axis of said pipe in the direction of fluid flow, to cause the fluid discharged through each of said apertures to adhere to said outer surface of said pipe to effect dripping of said discharged fluid from said pipe.
Claim 3
Dependent Claim
40 words
An improved pipe as claimed in claim 1 wherein: each aperture has a center line length in said wall and an inner aperture diameter in said wall, said length being at least three times as great as said inner diameter.
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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) | 1984-01-27 | 1984-07-28 | 1985-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-27 | 1988-07-28 | 1989-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-27 | 1992-07-28 | 1993-01-27 | $7700.00 | Window Closed / Lapsed |