Self-propelled sprinkling apparatus and safety means therefor
Abstract
Abstract A SELF-PROPELLED SPRINKLING APPARATUS FOR SPRINKLING OR IRRIGATING A RELATIVELY LARGE ARE SURROUNDING A CENTRAL PIVOT POINT. A WATER SUPPLY PIPE EXTENDS OUTWARDLY FROM THE CENTRAL PIVOT POINT AND IS SUPPORTED BY A PLURALITY OF SPACED APART,. WHEELED TOWERS. AN AIR OPERTED DRIVE MEANS IS PROVIDED ON EACH OF THE TOWERS TO PROPEL THE TOWERS AND PIPE AROUND THE CENTRAL PIVOT POINT. A CONTROL MEANS IS PROVIDED ON EACH OF THE TOWERS AND IS INTERCONNECTED WITH EACH OF THE OTHER TOWERS TO SELECTIVELY OPERATE THE DRIVE MEANS ASSOCIATED THEREWITH TO MAINTAIN THE PIPE AND TOWERS IN AN ALIGNED CONDITION AS THE WATER SUPPLY PIPE IS PIVOTED AROUND THE CENTRAL PIVOT POINT. A SAFETY VALVE IS PROVIDED IN THE AIR CIRCUIT ON EACH OF THE TOWERS TO DE-ACTIVATE THE DRIVE MEANS ON ALL OF THE TOWERS UPON ONE OF THE TOWERS BECOMING OUT OF ALIGNMENT WITH THE OTHER TOWERS TO PREVENT STRUCTURAL DAMAGE TO THE APPARATUS.
Inventors
- 👤 Dwaine Paul
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) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |