Patent US3602486A successfully refreshed from Google Patents.
US3602486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for stirring material or drying slurries or sludges
Assignee: Nautamix Patent AG
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Filing: 1969-07-11
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Granted: 1971-08-31
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Expires: 1989-07-11
Abstract
Abstract A device for stirring and mixing materials and for drying slurries, sludges and the like comprises a vessel having a vertical axis of symmetry. Two stirring members are mounted in the vessel. One of the stirring members rotates about its own axis while revolving about a circular path about the axis of symmetry of the vessel while the other stirring member rotates about its own axis while revolving about the axis of symmetry of the vessel and simultaneously moving alternately towards and away from the sidewalls of the vessel.
Inventors
- 👤 Constant Johan Nauta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:26
CPC Classifications
B; B01; B01F; B01F27/00; B01F27/80; B01F27/95; B01F27/953; B01F27/05; B01F27/11; B01F27/114; B01F27/1143; B01F27/23; B01F27/232; B01F27/2321; B01F27/2324
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
169 words
A device for stirring and mixing materials and for drying slurries, sludges, and the like, comprising a vessel having a vertical axis of symmetry, a first elongated stirring member rotatably mounted in said vessel, driving means for rotating said first stirring member about its longitudinal axis, support body means mounted for rotation about the axis of symmetry of said vessel, a second elongated driving member mounted at its upper end for rotation in said support body means and at a location spaced from said axis of rotation, said operable means rotatably supporting the upper end portion of said first stirring member and drive means for rotating said support body means about the axis of symmetry of the vessel and for driving said operable means whereby said second stirring member revolves in a circular path about the axis of symmetry of the vessel and said first stirring member revolves about the axis of symmetry of the vessel and simultaneously moves alternately towards and away from the sidewalls of the vessel.
Claim 2
Independent Claim
169 words
A device for stirring and mixing materials and for drying slurries, sludges, and the like, comprising a vessel having a vertical axis of symmetry, a first elongated stirring member rotatably mounted in said vessel, driving means for rotating said first stirring member about its longitudinal axis, support body means mounted for rotation about the axis of symmetry of said vessel, a second elongated driving member mounted at its upper end for rotation in said support body means and at a location spaced from said axis of rotation, said operable means rotatably supporting the upper end portion of said first stirring member and drive means for rotating said support body means about the axis of symmetry of the vessel and for driving said operable means whereby said second stirring member revolves in a circular path about the axis of symmetry of the vessel and said first stirring member revolves about the axis of symmetry of the vessel and simultaneously moves alternately towards and away from the sidewalls of the vessel.
Claim 3
Dependent Claim
70 words
A device according to claim 1 wherein said operable means is mounted for rotation on said support body means about an axis spaced from the latter''s axis of rotation, said operable means having a bearing element for rotatably supporting the upper end of said first stirring member, said bearing element having an axis of rotation spaced from the axes of rotation of said operable means and said support body means.
Claim 4
Dependent Claim
44 words
A device according to claim 1 wherein said first stirring member extends almost the full vertical height of the vessel and said second stirring member extends into said vessel to a depth substantially less than the depth to which said first stirring member extends.
Claim 5
Dependent Claim
26 words
A device according to claim 1 further comprising means for supporting the lower end of the first stirring member in the lower part of the vessel.
Claim 6
Dependent Claim
18 words
A device according to claim 1 wherein said second stirring member has a free and unsupported lower end.
Claim 7
Dependent Claim
20 words
A dEvice according to claim 1 wherein said first and second stirring members are mounted diametrically opposed to one another.
Claim 8
Dependent Claim
57 words
A device according to claim 1 wherein said driving means for said first stirring member is located at the lower end of said vessel, said driving means having an output shaft in axial alignment with the axis of symmetry of said vessel, and means connecting said output shaft to the lower end of said first stirring member.
Claim 9
Dependent Claim
39 words
A device according to claim 2 wherein said support body means comprises a gear element fixed to said vessel, gear train means meshing with said gear element for rotating said second stirring member about its own axis of rotation.
Claim 10
Dependent Claim
60 words
A device according to claim 8 wherein said operable means comprises a rotatable shaft, a gear fixed to said shaft and meshing with said gear element to effect rotation of said rotatable shaft, an arm fixed to said rotatable shaft, said bearing element being carried on said arm and having an axis spaced from the axis of said rotatable shaft.
Claim 11
Dependent Claim
27 words
A device according to claim 9 wherein said bearing element comprises a spherical ball having a bore for receiving the end portion of said first stirring member.
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) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |