US3986705A
Expired / Lapsed
US
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Method and device for continuously mixing and/or granulating substances
Assignee: Nautamix Patent AG
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Filing: 1974-10-29
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Granted: 1976-10-19
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Expires: 1994-10-29
Abstract
Abstract A method and a device for performing said method for mixing and/or granulating pulverulent- or granular substances and at least one liquid in a continuous process, while the material is moved in a vessel from top to bottom and at least at one location of the vessel is eddied reducing at the same time the density of the mass of substance at the related location.
Inventors
- 👤 Constant Johan Nauta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:16
CPC Classifications
B; B01; B01F; B01F27/00; B01F27/80; B01F35/00; B01F35/71; B01F35/712; B01F35/717; B01F35/7173; B01F35/71731
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
98 words
The method for mixing and/or granulating pulverent or granular substances and at least one liquid in a continuous process while the material in a vessel is moved from top to bottom, subjecting the mixture to an initial increase in density followed by a decrease in mixture density along the axis of the vessel from top towards its bottom, generating a vortex in the area of decrease in mixture density with stirring elements and at least part of the liquid is added in a rotary action in the area of decrease of density immediately following stirring of the mixture.
Claim 2
Independent Claim
98 words
The method for mixing and/or granulating pulverent or granular substances and at least one liquid in a continuous process while the material in a vessel is moved from top to bottom, subjecting the mixture to an initial increase in density followed by a decrease in mixture density along the axis of the vessel from top towards its bottom, generating a vortex in the area of decrease in mixture density with stirring elements and at least part of the liquid is added in a rotary action in the area of decrease of density immediately following stirring of the mixture.
Claim 3
Dependent Claim
30 words
The method of claim 1 wherein the mixture is subjected to a plurality of areas of decrease in mixture density along the axis of the vessel promoted by gravity assist.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-10-19 | 1980-04-19 | 1980-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-19 | 1984-04-19 | 1984-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-19 | 1988-04-19 | 1988-10-19 | $7700.00 | Window Closed / Lapsed |