US3918646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Irrigation systems by trickling
Assignee: Individual
•
Filing: 1974-09-06
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Granted: 1975-11-11
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Expires: 1994-09-06
Abstract
Abstract The present invention refers to improvements to compensating water emitters and more specifically to means by which it is possible to have a control of water emission by drippers, sprinklers and other similar devices, taking advantage of the pressure exerted at a given time by the fluid in the supply line, which at the same time allows the duct and its accessories to clean itself.
Inventors
- 👤 Jaime Leal-Diaz
- 👤 Javier Rangel-Garza
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:21
CPC Classifications
A; A01; A01G; A01G25/00; A01G25/02; A01G25/023; B; B05; B05B; B05B15/00; B05B15/50; B05B15/52; B05B15/528
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
161 words
A two piece water emitter adapted for mounting primarily inside a hollow conduction line with a confining wall with an outlet port member positioned near the exterior surface of the conduction line for discharge of water, and an entrance port positioned inside said line, comprising in combination, a stiff male member having said outlet as the head thereof for discharging fluid, a fitting for engaging said wall of said conduction line to hold said member in place therein with said head substantially flush with said confining wall and with a stiff stem portion defining a water conveyance duct therethrough for extending inside said hollow line to convey fluids through said confining wall, and an elastic generally cylindrical female section for fitting snugly around a portion of said stem to form a wall portion of said fluid conveying duct therein and extend substantially radially into said line and wherein fluid entrance and exit ports extend from opposite ends of said female member.
Claim 2
Dependent Claim
161 words
A two piece water emitter adapted for mounting primarily inside a hollow conduction line with a confining wall with an outlet port member positioned near the exterior surface of the conduction line for discharge of water, and an entrance port positioned inside said line, comprising in combination, a stiff male member having said outlet as the head thereof for discharging fluid, a fitting for engaging said wall of said conduction line to hold said member in place therein with said head substantially flush with said confining wall and with a stiff stem portion defining a water conveyance duct therethrough for extending inside said hollow line to convey fluids through said confining wall, and an elastic generally cylindrical female section for fitting snugly around a portion of said stem to form a wall portion of said fluid conveying duct therein and extend substantially radially into said line and wherein fluid entrance and exit ports extend from opposite ends of said female member.
Claim 3
Dependent Claim
47 words
The emitter defined in claim 1, wherein the stem forms a part of said duct and said female member a further part and elasticity of said female member flexes as a function of hydraulic pressure to change the size of the flow path through said conveying duct.
Claim 4
Dependent Claim
61 words
The emitter defined in claim 1, wherein said stem portion has a base and a crown for engaging said female member at opposite ends thereof, said crown sealing the duct by engagement with said female member to prevent leakage external to said duct and said base engaging said female member to hold it in position in sealing engagement with said crown.
Claim 5
Dependent Claim
51 words
The emitter defined in claim 3, wherein said base defines an entrance port for receiving fluid from said conduction line, with the entire stem portion and female member positioned substantially radially inside said conduction line so that an instrument can be inserted from outside said condution line to clean said duct.
Claim 6
Dependent Claim
23 words
The emitter defined in claim 1, wherein said crown has a retaining ring for engaging said female member to hold it in place.
Claim 7
Dependent Claim
30 words
The emitter defined in claim 5, wherein said male member extends into one end of said female member and only partly through said duct walls defined by said female member.
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) | 1978-11-10 | 1979-05-12 | 1979-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-10 | 1983-05-12 | 1983-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-10 | 1987-05-12 | 1987-11-11 | $7700.00 | Window Closed / Lapsed |