US3799442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibrous self cleaning irrigation device
Assignee: Individual
•
Filing: 1973-03-26
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Granted: 1974-03-26
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Expires: 1993-03-26
Abstract
Abstract An irrigation device including a conduit having a plurality of emitters spaced therealong, each emitter being a tubing of relatively small internal diameter relative to that of the conduit, extending a substantial distance into and out of the conduit and having a fibrous wick therein, the frayed ends of the wick extending out of each end of the tubing.
Inventors
- 👤 W Delmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:42
CPC Classifications
A; A01; A01G; A01G25/00; A01G25/02; A01G25/023
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
135 words
In a drip irrigation device, the combination of: a feeder tubing adapted to convey irrigation water at a desired pressure and volume for irrigation purposes; a plurality of emitters spaced along the length of said feeder tubing, each of said emitters including a relatively short tube of relatively small internal diameter, one end of which extends into said tubing and the other end of which extends beyond the exterior of said tubing, and a wick in said tube and consisting of a plurality of strands of flexible fibrous material extending generally longitudinally of said tube, each of said strands being of relatively small diameter compared with the internal diameter of said tube, at least one end of said wick extending beyond its adjacent end of said tube and in which the strands are substantially separated.
Claim 2
Dependent Claim
135 words
In a drip irrigation device, the combination of: a feeder tubing adapted to convey irrigation water at a desired pressure and volume for irrigation purposes; a plurality of emitters spaced along the length of said feeder tubing, each of said emitters including a relatively short tube of relatively small internal diameter, one end of which extends into said tubing and the other end of which extends beyond the exterior of said tubing, and a wick in said tube and consisting of a plurality of strands of flexible fibrous material extending generally longitudinally of said tube, each of said strands being of relatively small diameter compared with the internal diameter of said tube, at least one end of said wick extending beyond its adjacent end of said tube and in which the strands are substantially separated.
Claim 3
Dependent Claim
39 words
A device as defined in claim 1 in which both ends of said wick extend beyond the end of said tube adjacent to each end of the wick, and in which the strands are substantially separated at said ends.
Claim 4
Dependent Claim
34 words
A device as defined in claim 1 in which said end of said tube which extends into said feeder tubing extends a substantial distance thereinto and away from the inner wall of the tubing.
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) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |