Patent GB738051A successfully refreshed from Google Patents.
US3677711A
Expired / Lapsed
US
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Plural cavity toroidal float pool chemical package
Assignee: World Industries Inc
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Filing: 1970-03-25
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Granted: 1972-07-18
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Expires: 1990-03-25
Abstract
Abstract A FLOAT RING CONTAINS CAVITIES EACH FILLED WITH A SOLUBLE POOL CHEMICAL SUCH AS CHLORINE TABLETS OF GRANULES. A TUBE CAP PROTRUDES AN ADJUSTABLE AMOUNT FROM EACH CAVITY OF THE FLOAT RING AND AN APERTURE OF EACH TUBE IS IN THE PROTRUDED PORTION. EACH TUBE CAP IS ADJUSTABLE IN ITS FLOAT RING CAVITY TO CHANGE THE AREA OF THE TUBE CAP APERTURE EFFECTIVELY OPEN TO POOL WATER SO AS TO ALTER THE RATE AT WHICH THE CHEMICAL DISSOLVES INTO THE POOL.
Inventors
- 👤 William D Bond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:06
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/68; C02F1/685; C02F1/688; B; B01; B01F; B01F21/00; B01F21/20; B01F21/22; B01F33/00; B01F33/50; B01F33/503; C02F2103/00; C02F2103/42
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) | 1975-07-18 | 1976-01-17 | 1976-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-18 | 1980-01-17 | 1980-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-18 | 1984-01-17 | 1984-07-18 | $7700.00 | Window Closed / Lapsed |