Overflow discharge outlets and irrigation systems incorporating the same
Abstract
Abstract IMPROVED OVERFLOW DISCHARGE OUTLETS WHICH ARE ESPECIALLY SUITABLE FOR THE DISCHARGE OF WATER FROM IRRIGATION CHANNELS. THE OUTLET COMPRISES A BODY FORMED WITH AN UPSTANDING PASSAGE HAVING ITS UPPER END DEFINED BY A HORIZONTAL OVERFLOW LIP WHICH MAY EXTEND EITHER COMPLETELY OR ONLY PARTLY ABOUT THE PASSAGE FOR THE INFLOW OF WATER INTO THE LATTER FROM THE CHANNEL. THE OVERFLOW LIP IS PREFERABLY FORMED BY THE UPPER EDGE OF A VERTICALLY ADJUSTABLE UPWARD EXTENSION OF THE BODY. WATER IS DISCHARGED FROM A LOWER PART OF THE PASSAGE THROUGH AN OPENING IN THE BODY, AND THE RATE OF FLOW THROUGH THIS OPENING IS RESTRICTED BY A VALVE, BAFFLE OR OTHER MEANS TO PREVENT WASTAGE OF WATER IF THE LEVEL OF THE WATER IN THE CHANNEL SHOULD RISE EXCESSIVELY ABOVE THE LEVEL OF THE OVERFLOW LIP. ONE FORM OF THE OUTLET IS ADAPTED TO BE ARRANGED WITHIN A CHANNEL WHILE ANOTHER FORM IS ADAPTED TO BE ARRANGED IN A CHANNEL BANK TO CLOSE A GAP FORMED THEREIN.
Inventors
- 👤 Neil William Trewhella
Bibliographic Details
Claims Analysis
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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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |