Swimming pool including integral filter
Abstract
Abstract A SWIMMING POOL WITH FLEXIBLE SPACED INNER AND OUTER PERIPHERAL WALLS, THE SPACE BETWEEN WHICH IS EMPLOYED AS A FILTER, THEREBY PROVIDING A FILTER OF EXTREMELY LARGE CAPACITY. THE FILTER MATERIAL IS PREFERABLY OF THE SAND-GRAVEL TYPE FLUENT SOLID MATERIAL OF THIS TYPE SERVING TO SUPPORT AND REINFORCE THE FLEXIBLE INNER AND OUTER WALLS. AS AN OPTIONAL FEATURE, THE FILTERED WATER IS RETURNED TO THE MAIN POOL VOLUME THROUGH A RADIAL TUBE WHICH IS ROTATABLE ABOUT A VERTICAL AXIS AT THE POOL CENTER ADJACENT THE POOL BOTTOM. THE REACTION FORCE OF THE WATER DISCHARGE SIDEWAYS FROM THE TUBE CAUSES THE TUBE TO CONTINUOUSLY SWEEP AROUND THE POOL BOTTOM TO PREVENT DEBRIS FROM COLLECTING ON THE POOL BOTTOM.
Inventors
- 👤 John G Takacs
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) | 1974-11-01 | 1975-05-03 | 1975-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-01 | 1979-05-03 | 1979-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-01 | 1983-05-03 | 1983-11-02 | $7700.00 | Window Closed / Lapsed |