US4676658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixing apparatus
Assignee: Dr Herfeld GmbH and Co KG
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Filing: 1985-08-26
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Granted: 1987-06-30
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Expires: 2005-08-26
Abstract
Abstract Mixing apparatus having a mixing vessel which is pivotable by 180° about a horizontal axis and has a stationary stirrer drive motor. Such mixing apparatus is distinguished by a simple construction. Furthermore, the speed of rotation of the stirrer shaft can be optimally adapted to the mixing process by means of reduction gears between the stationary drive motor and the stirrer.
Inventors
- 👤 F. W. Herfeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:09
CPC Classifications
B; B01; B01F; B01F33/00; B01F33/35; B01F27/00; B01F27/80; B01F27/808; B01F35/00; B01F35/30; B01F35/32; B01F35/321; B01F35/3213
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
185 words
In mixing apparatus having a stationary stand on which a first mixing vessel part is mounted for rotation relative to said stand about a horizontal first axis, a stirrer having a shaft rotatably supported in said first vessel part for rotation about a second axis normal to said first axis, a second vessel part movable into clamping engagement with said first part to form with the latter a mixing chamber in which said first part forms a cover for said chamber, driving means, and transmission means interconnecting said driving means and said first part for rotating said first part about said horizontal first axis through at least 180° to an adjusted position in which said first part forms the bottom of said chamber, the improvement comprising stirrer shaft drive means mounted on said stationary stand; and drive transmitting means coupling said drive means and said stirrer shaft for rotating the latter in said adjusted position of said first part, said drive transmitting means including a drive shaft coaxial with said horizontal first axis, and gear means drivingly coupling said drive shaft to said stirrer shaft.
Claim 2
Dependent Claim
185 words
In mixing apparatus having a stationary stand on which a first mixing vessel part is mounted for rotation relative to said stand about a horizontal first axis, a stirrer having a shaft rotatably supported in said first vessel part for rotation about a second axis normal to said first axis, a second vessel part movable into clamping engagement with said first part to form with the latter a mixing chamber in which said first part forms a cover for said chamber, driving means, and transmission means interconnecting said driving means and said first part for rotating said first part about said horizontal first axis through at least 180° to an adjusted position in which said first part forms the bottom of said chamber, the improvement comprising stirrer shaft drive means mounted on said stationary stand; and drive transmitting means coupling said drive means and said stirrer shaft for rotating the latter in said adjusted position of said first part, said drive transmitting means including a drive shaft coaxial with said horizontal first axis, and gear means drivingly coupling said drive shaft to said stirrer shaft.
Claim 3
Dependent Claim
13 words
Mixing apparatus according to claim 1 wherein said gear means comprises mitre gears.
Claim 4
Dependent Claim
15 words
Mixing apparatus according to claim 1 wherein said drive transmitting means comprises speed reduction means.
Claim 5
Dependent Claim
15 words
Mixing apparatus according to claim 3 wherein said speed reduction means comprises meshing mitre gears.
Claim 6
Dependent Claim
21 words
Mixing apparatus according to claim 1 wherein said first vessel part is rotatable about said horizontal axis through at least 360°.
Claim 7
Dependent Claim
19 words
Mixing apparatus according to claim 5 wherein said driving means is operable to rotate said first vessel part continuously.
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) | 1990-06-29 | 1990-12-29 | 1991-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-29 | 1994-12-29 | 1995-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-29 | 1998-12-29 | 1999-06-30 | $7700.00 | Window Closed / Lapsed |