US3579657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swimming pool cover drain
Assignee: Individual
•
Filing: 1969-09-04
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Granted: 1971-05-25
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Expires: 1989-09-04
Abstract
Abstract A DEVICE FOR PUMPING WATER FROM A SWIMMING POOL COVER INCLUDING A FIRST UNIT LOCATED ON A SWIMMING POOL COVER, THE FIRST UNIT HAVING A FLOAT VALVE OPENED BY WATER ACCUMULATING ON THE COVER, THE VALVE CONNECTING TO A SECOND UNIT AT THE POOL SKIMMER SO THAT WATER FROM THE COVER IS CONDUCTED TO THE INLET OF THE PUMP FOR THE POOL''S CIRCULATION SYSTEM. A VALVE MEMBER IN THE SECOND UNIT IS SPRING-BIASED TO A CLOSED POSITION, BUT OPENED IN RE- SPONSE TO SUCTION UPON THE CLOSING OF THE FLOAT VALVE, THEREBY PROVIDING NORMAL SYSTEM OPERATION THROUGH THE POOL SKIMMER WHEN NO WATER IS PRESENT ON TOP OF THE COVER.
Inventors
- 👤 Salvatore J Gurrieri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:42
CPC Classifications
E; E04; E04H; E04H4/00; E04H4/06; E04H4/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |