Patent US1457436A successfully refreshed from Google Patents.
Patent US3666240A successfully refreshed from Google Patents.
US3666240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gravity mixer
Assignee: Individual
•
Filing: 1969-04-29
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Granted: 1972-05-30
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Expires: 1989-04-29
Abstract
Abstract A gravity mixing machine for free-flowing products in which a mixing drum is arranged inclined to the horizontal and rotatable about its longitudinal axis and into which the material is introduced at its higher end and discharged at its lower end. The drum is divided into a plurality of successive mixing chambers by the provision of radially extending plates.
Inventors
- 👤 Wilheim Lodige
- 👤 Fritz Lodige
- 👤 Joseph Lucke
- 👤 Karlheinz Luke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:48
CPC Classifications
B; B01; B01F; B01F29/00; B01F29/60; B01F29/63; B01F29/25; B01F35/00; B01F35/71; B01F35/715; B01F35/717; B01F35/71705; B01F35/7173; B01F35/71731; B01F35/75; B01F35/754; B01F35/75415; B01F29/40; B01F29/403; B01F29/4033
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
162 words
A gravity mixer for free-flowing materials, the mixer comprising: a longitudinally extending mixing drum rotatable about an inclined longitudinal axis inclined to the horizontal, and having an upper end, a lower end, and a drum wall running between said upper end and said lower end; a plurality of axially spaced, radially inwardly extending, annular plates having a central aperture therein and disposed in the drum in such a way as to divide the drum into a plurality of successive intercommunicating chambers, said chambers being adapted for said material to flow successively through each of said chambers to the lower end of the drum; at least one entraining plate in each chamber radially inwardly projecting from the drum wall a distance no greater than the radial distance from the drum wall to the aperture and extending between successive chamber-forming plates, the entraining plates in successive chambers being angularly displaced; and means for discharging said material from the lower end of the mixing drum.
Claim 2
Dependent Claim
162 words
A gravity mixer for free-flowing materials, the mixer comprising: a longitudinally extending mixing drum rotatable about an inclined longitudinal axis inclined to the horizontal, and having an upper end, a lower end, and a drum wall running between said upper end and said lower end; a plurality of axially spaced, radially inwardly extending, annular plates having a central aperture therein and disposed in the drum in such a way as to divide the drum into a plurality of successive intercommunicating chambers, said chambers being adapted for said material to flow successively through each of said chambers to the lower end of the drum; at least one entraining plate in each chamber radially inwardly projecting from the drum wall a distance no greater than the radial distance from the drum wall to the aperture and extending between successive chamber-forming plates, the entraining plates in successive chambers being angularly displaced; and means for discharging said material from the lower end of the mixing drum.
Claim 3
Dependent Claim
32 words
A mixer as claimed in claim 1 wherein the apertures are circular and each aperture has an internal diameter of from 50 to 80 percent of the diameter of the mixing drum.
Claim 4
Dependent Claim
33 words
A mixer as claimed in claim 2 wherein the radially extending plates are arranged in the mixing vessel at intervals of from 15 to 40 percent of the diameter of the mixing drum.
Claim 5
Dependent Claim
26 words
A mixer as claimed in claim 1 comprising a driven shaft inclined at an angle of from 10* to 25*, for supporting and rotating the mixer.
Claim 6
Dependent Claim
22 words
A mixer as claimed in claim 4, comprising radial spokes extending from the driven shaft and supporting the wall of the drum.
Claim 7
Dependent Claim
25 words
A mixer as claimed in claim 5, further comprising bores disposed longitudinally in the spokes and the shaft for flow of cooling or heating medium.
Claim 8
Dependent Claim
24 words
A mixer as claimed in claim 1, further comprising a double wall jacket surrounding the mixing drum for accommodating a cooling or heating medium.
Claim 9
Dependent Claim
22 words
A mixer as claimed in claim 7, further comprising means for circulating the heating or cooling medium in the double wall jacket.
Claim 10
Dependent Claim
24 words
A mixer as claimed in claim 1 wherein the two ends of the mixing vessel are provided with fixed dust-tight feed and discharge funnels.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |