Patent US3721369A successfully refreshed from Google Patents.
US3721369A
Expired / Lapsed
US
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Ice storage and water carbonating system
Assignee: Follett Products LLC
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Filing: 1970-12-28
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Granted: 1973-03-20
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Expires: 1990-12-28
Abstract
Abstract THIS INVENTION IS DIRECTED TO AN ICE STORAGE AND WATER CARBONATING SYSTEM THAT INCLUDES A WATER CARBONATING VESSEL LOCATED WITHIN AN ICE STORAGE CHEST. CARBON DIOXIDE UNDER PRESSURE AND MAKE-UP WATER ARE SUPPLIED TO THE CARBONATING VESSEL. THE MAKE-UP WATER IS DRAWN FROM THE BOTTOM OF THE STORAGE CHEST AND INCLUDES MELT WATER FROM THE ICE THEREIN PLUS ANY AMOUNT OF EXTERNALLY SUPPLIED WATER THAT MAY BE REQUIRED BEYOND THAT SOLELY AVAILABLE FROM THE MELT WATER. SUITABLE CONTROLS ARE PROVIDED TO MAINTAIN THE ICE, WATER AND CARBONATED WATER LEVELS WITHIN PREDETERMINED RANGES.
Inventors
- 👤 R Conti
- 👤 D Follett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:26
CPC Classifications
F; F25; F25C; F25C5/00; F25C5/18; F25C5/182; F25C5/187; B; B01; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/236
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) | 1976-03-19 | 1976-09-18 | 1977-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-19 | 1980-09-18 | 1981-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-19 | 1984-09-18 | 1985-03-20 | $7700.00 | Window Closed / Lapsed |