US3861656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vertical mixer
Assignee: MASCHINENFABRIK J S PETZHOLDT
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Filing: 1973-03-08
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Granted: 1975-01-21
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Expires: 1993-03-08
Abstract
Abstract A mixing vessel with a vertical axis has a plurality of rotatable screw conveyors extending vertically through the top of the vessel into its mixing chamber and a stirrer arranged revolvably about the vessel axis to sweep over the wall of the mixing chamber as it revolves. The stirrer is so associated with the screw conveyors that it moves a mass to be mixed in the chamber towards the screw conveyor means, and may be constituted by one of the screw conveyors.
Inventors
- 👤 Armin Schmitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:55
CPC Classifications
B; B01; B01F; B01F27/00; B01F27/80; B01F27/95; B01F27/951; A; A23; A23G; A23G1/00; A23G1/04; A23G1/10; B01F27/05; B01F27/11; B01F27/13; B01F27/953; B01F27/09; B01F27/091; B01F27/114; B01F27/1143; B01F27/23; B01F27/232; B01F27/2322
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
128 words
A mixer for a chocolate mass comprising 1. a mixing vessel having a vertical axis and defining an interior mixing chamber, the mixing vessel having a top, 2. a rotatable screw conveyor means extending vertically from the vessel top into the mixing chamber, the screw conveyor means comprising at least two interdigitating rotatable screw conveyors mounted for rotation in opposite directions, and 3. a stirrer arranged revolvably about the vessel axis in the mixing chamber, the stirrer extending in a radial plane and having an edge portion adapted to sweep over the wall of the mixing chamber as it revolves about the vessel axis and being associated with the rotatable screw conveyor means so as to move the chocolate mass in the chamber towards the screw conveyor means.
Claim 2
Dependent Claim
128 words
A mixer for a chocolate mass comprising 1. a mixing vessel having a vertical axis and defining an interior mixing chamber, the mixing vessel having a top, 2. a rotatable screw conveyor means extending vertically from the vessel top into the mixing chamber, the screw conveyor means comprising at least two interdigitating rotatable screw conveyors mounted for rotation in opposite directions, and 3. a stirrer arranged revolvably about the vessel axis in the mixing chamber, the stirrer extending in a radial plane and having an edge portion adapted to sweep over the wall of the mixing chamber as it revolves about the vessel axis and being associated with the rotatable screw conveyor means so as to move the chocolate mass in the chamber towards the screw conveyor means.
Claim 3
Dependent Claim
34 words
a rotatable screw conveyor means extending vertically from the vessel top into the mixing chamber, the screw conveyor means comprising at least two interdigitating rotatable screw conveyors mounted for rotation in opposite directions, and
Claim 4
Dependent Claim
34 words
a rotatable screw conveyor means extending vertically from the vessel top into the mixing chamber, the screw conveyor means comprising at least two interdigitating rotatable screw conveyors mounted for rotation in opposite directions, and
Claim 5
Dependent Claim
18 words
The mixer of claim 1, wherein the screw conveyors are eccentrically mounted in respect of the vessel axis.
Claim 6
Dependent Claim
27 words
The mixer of claim 2, wherein the screw conveyors are arranged in a radial plane extending through the vessel axis, the stirrer extending in another radial plane.
Claim 7
Dependent Claim
65 words
a stirrer arranged revolvably about the vessel axis in the mixing chamber, the stirrer extending in a radial plane and having an edge portion adapted to sweep over the wall of the mixing chamber as it revolves about the vessel axis and being associated with the rotatable screw conveyor means so as to move the chocolate mass in the chamber towards the screw conveyor means.
Claim 8
Dependent Claim
65 words
a stirrer arranged revolvably about the vessel axis in the mixing chamber, the stirrer extending in a radial plane and having an edge portion adapted to sweep over the wall of the mixing chamber as it revolves about the vessel axis and being associated with the rotatable screw conveyor means so as to move the chocolate mass in the chamber towards the screw conveyor means.
Claim 9
Dependent Claim
19 words
The mixer of claim 1, wherein the rotatable screw conveyor means is arranged revolvably about the mixing vessel axis.
Claim 10
Dependent Claim
70 words
the mixer of claim 1, wherein the stirrer is one of the rotatable screw conveyors, the combined diameters of the screw conveyors being such that the diameter of the interior mixing chamber is, at least, twice the combined diameters of the conveyors less approximately the height of the thread of one of the conveyors, and the screw conveyors are arranged in a radial plane in respect of the vessel axis.
Claim 11
Dependent Claim
29 words
The mixer of claim 1, wherein the screw conveyor means comprises a plurality of rotatable screw conveyors arranged symmetrically and concentrically about the vertical axis of the mixing vessel.
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) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |