US3667735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal cement slurry mixer
Assignee: FOWLER REX Pty Ltd
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Filing: 1970-06-03
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Granted: 1972-06-06
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Expires: 1990-06-03
Abstract
Abstract AN APPARATUS FOR MIXING CEMENT-WATER SLURRY IN WHICH A TANK HAVING AN ANNULAR MIXING CHAMBER IS DISPOSED ABOUT A CORE AND A FLEXIBLE HOLLOW CYLINDER MOUNTED ABOVE THE CORE HAS FLEXIBLE WALLS FOR THE INTRODUCTION OF PULSATING AIR INTO IT. TANGENTIALLY LOCATED NOZZLES ADMIT WATER TO THE UPPER PART OF THE CHAMBER. CEMENT IS ALSO INTRODUCED INTO THE UPPER REGION OF THE CHAMBER NEAR THE FLEXIBLE PULSATING WALL. THE SLURRY MIXED IN THE CHAMBER IS RECIRCULATED FROM A SUCTION OUTLET NEAR THE BOTTOM OF THE CHAMBER TO AN INTERMEDIATE LEVEL VIA A VALVE WHICH CAN DELIVER WATER ALONE OR SLURRY FROM WITHIN THE CHAMBER OR SLURRY FROM THE SUCTION OUTLET.
Inventors
- 👤 Maxwell G Hood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:14
CPC Classifications
B; B28; B28C; B28C5/00; B28C5/02; B28C5/06
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) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |