US3620228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soil irrigator water and sediment drain
Assignee: Individual
•
Filing: 1969-11-24
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Granted: 1971-11-16
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Expires: 1989-11-24
Abstract
Abstract An improved device for attaching in the pipes of irrigating systems for removing silt and draining water composed of a tee for inserting in pipeline, a long drop pipe accommodating a valve seat, interior longitudinal flanges above said seat, and a buoyant captive ball between; ball being forced to seat under water pressure and rising when pressure is relieved, permitting silt and water to pass into open end sump below.
Inventors
- 👤 Howard C Schmid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:30
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/02; F16K15/04; F16K15/048; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/7287; Y10T137/7358; Y10T137/7423; Y10T137/7426; Y10T137/7436; Y10T137/7722; Y10T137/7837; Y10T137/7869; Y10T137/7871; Y10T137/7873; Y10T137/7904; Y10T137/7908; Y10T137/7909; Y10T137/791
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
106 words
A soil irrigator water and sediment drain comprising a plastic pipe having an integral tee at its upper extremity, an integral narrow annular ring projecting inwardly from an interior surface of said pipe substantially midway between the upper and lower ends thereof forming a seat for a hollow ball valve resting thereon, ball stop means positioned between said seat and tee comprising thin integral longitudinal projections extending inwardly from said interior surface of the pipe considerably above said ball and permitting ample upward movement of the ball resulting in a minimum of restriction to flow of water and movement of sand and silt within the drain.
Claim 2
Dependent Claim
106 words
A soil irrigator water and sediment drain comprising a plastic pipe having an integral tee at its upper extremity, an integral narrow annular ring projecting inwardly from an interior surface of said pipe substantially midway between the upper and lower ends thereof forming a seat for a hollow ball valve resting thereon, ball stop means positioned between said seat and tee comprising thin integral longitudinal projections extending inwardly from said interior surface of the pipe considerably above said ball and permitting ample upward movement of the ball resulting in a minimum of restriction to flow of water and movement of sand and silt within the drain.
Claim 3
Dependent Claim
31 words
A device as set forth in claim 2 in which a pipe chamber is provided below said ball valve and is extended and enlarged for admission of additional sand and silt.
Claim 4
Dependent Claim
30 words
A device as set forth in claim 2 in combination with an irrigation pipe, said tee portion being interposed in said irrigator pipe and forming a downward leg extending therefrom.
References Cited (Backward Citations)
US1652038A
Cited
US2775979A
Cited
US2272304A
Cited
FR1301426A
Cited
US3209738A
Cited
US3454005A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |