Patent US2460679A successfully refreshed from Google Patents.
Patent US3873030A successfully refreshed from Google Patents.
US3873030A
Expired / Lapsed
US
⏱️ 0.0 years remaining
One-piece drip irrigation device
Assignee: Individual
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Filing: 1974-02-19
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Granted: 1975-03-25
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Expires: 1994-02-19
Abstract
Abstract A one-piece drip irrigation device for attachment to a perforated wall of an irrigation liquid supply pipe, said device comprising a casing having side and bottom walls and a flange extending outwardly from the edges of an open wall of same, said flange when attached to the pipe wall constituting an enclosed housing having a multiplicity of alternate walls that form a passage provided with a multiplicity of obstacles to free flow of liquid and including in one of its ends a perforation for liquid exit at lowered pressure.
Inventors
- 👤 Jaime Suhagun Barragan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:22
CPC Classifications
A; A01; A01G; A01G25/00; A01G25/02; A01G25/023; Y; Y02; Y02A; Y02A40/00; Y02A40/10; Y02A40/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
A one-piece drip irrigation device for attachment to an irrigation pipe over a perforation in the wall of said pipe, comprising a one-piece elongated casing member with a curved cross-section corresponding to the radius of the outside of the pipe walls, said casing member having a curved bottom wall and side walls of uniform height extending around the edges of said bottom wall, and having a multiplicity of internal walls of the same height as the side walls arranged to form passages providing a multiplicity of obstacles to liquid flow, the tops of said side and internal walls engaging with the outer walls of the pipe when the device is attached to the irrigation pipe, an outlet hole being provided in said casing member to distribute liquid from said irrigation pipe at lowered pressure after passing through said passages.
Claim 2
Dependent Claim
139 words
A one-piece drip irrigation device for attachment to an irrigation pipe over a perforation in the wall of said pipe, comprising a one-piece elongated casing member with a curved cross-section corresponding to the radius of the outside of the pipe walls, said casing member having a curved bottom wall and side walls of uniform height extending around the edges of said bottom wall, and having a multiplicity of internal walls of the same height as the side walls arranged to form passages providing a multiplicity of obstacles to liquid flow, the tops of said side and internal walls engaging with the outer walls of the pipe when the device is attached to the irrigation pipe, an outlet hole being provided in said casing member to distribute liquid from said irrigation pipe at lowered pressure after passing through said passages.
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) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |