US3575729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatically extensible and retractable suction and scouring action pool cleaner
Assignee: Blue Haven Pools Inc
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Filing: 1969-08-21
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Granted: 1971-04-20
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Expires: 1989-08-21
Abstract
Abstract ONE OR MORE CLEANING SWEEPS, EACH COMPRISING A SCOURING JET HOSE INSIDE A SUCTION HOSE, ADAPTED TO UNDULATE OVER A SWIMMING POOL BOTTOM WITH A COMBINED JET SCOURING AND SUCTION CLEANING ACTION, ARE NORMALLY WITHDRAWN INTO TUBULAR HOUSINGS BENEATH THE POOL DECK, FROM WHICH THEY ARE AUTOMATICALLY PROJECTED INTO OPERATIVE POSITIONS WHEN PRESSURIZED WATER FLOW IS APPLIED TO THEIR REAR ENDS FOR DELIVERY THROUGH THE JET HOSES, SUCTION BEING AUTOMATICALLY APPLIED TO THE SUCTION HOSES WHEN THE SWEEPS ARE FULLY PROJECTED, AND THE SWEEPS BEING RETRACTED INTO THEIR HOUSINGS BY THE HYDROSTATIC PRESSURE OF WATER IN THE POOL WHEN SUCTION IS APPLIED TO THEIR REAR ENDS.
Inventors
- 👤 Herbert H Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:13
CPC Classifications
E; E04; E04H; E04H4/00; E04H4/14; E04H4/16; E04H4/1681
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) | 1974-04-19 | 1974-10-19 | 1975-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-19 | 1978-10-19 | 1979-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-19 | 1982-10-19 | 1983-04-20 | $7700.00 | Window Closed / Lapsed |