US4380398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dispersion mixer
Assignee: BABURCO Inc A CORP OF CANADA
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Filing: 1980-09-16
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Granted: 1983-04-19
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Expires: 2000-09-16
Abstract
Abstract A dispersion mixer is disclosed for breaking up and dispersing agglomerated particles in a liquid medium. The mixer has the capability of causing high speed particles to strike each other in such a manner as to develop their maximum shear energy potential and thus be more efficient than existing dispersion mixers. The mixer operates in a container and has a first rotor shaft extending downwards at the approximate center of the container, a second rotor shaft substantially parallel to the first rotor shaft, spaced from the first rotor shaft, at least one mixing rotor disc mounted on the first rotor shaft, and at least one mixing rotor disc mounted on the second rotor shaft, a first drive for rotating the first rotor shaft about its own axis, and the second rotor shaft about its own axis, and a second drive for moving the second rotor shaft in a circumferential path about the first rotor shaft.
Inventors
- 👤 Basil A. Burgess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:09
CPC Classifications
B; B01; B01F; B01F27/00; B01F27/80; B01F27/95; B01F27/951; B44; B44D; B44D3/00; B44D3/06; B44D3/08; B01F35/00; B01F35/30; B01F35/32; B01F35/323; B01F35/3231; B01F27/05; B01F27/09; B01F27/091; B01F27/23; B01F27/232; B01F27/2322; B01F27/2324; Y; Y10; Y10S; Y10S366/00; Y10S366/605
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
184 words
A dispersion mixer for operating in a container the mixer comprising a first rotor shaft extending downwards into the container at the container's approximate center, a second rotor shaft, substantially parallel to the first rotor shaft, spaced from the first rotor shaft and extending downwards into the container, at least one mixing rotor disc mounted on the first rotor shaft, and at least one mixing rotor disc mounted on the second rotor shaft, first drive means including first motor means for rotating the first rotor shaft about its own axis, and the second rotor shaft about its own axis, and second drive means including second motor means independent of said first drive means for moving the second rotor shaft in a circumferential path about the first rotor shaft, the first rotor shaft rotating at substantially the same rotational speed as the second rotor shaft, and in the same direction whereby the first drive means rotates the rotor shafts at high speed to develop maximum shear and the second drive means orbits the second rotor shaft about the first rotor shaft at a low speed.
Claim 2
Dependent Claim
184 words
A dispersion mixer for operating in a container the mixer comprising a first rotor shaft extending downwards into the container at the container's approximate center, a second rotor shaft, substantially parallel to the first rotor shaft, spaced from the first rotor shaft and extending downwards into the container, at least one mixing rotor disc mounted on the first rotor shaft, and at least one mixing rotor disc mounted on the second rotor shaft, first drive means including first motor means for rotating the first rotor shaft about its own axis, and the second rotor shaft about its own axis, and second drive means including second motor means independent of said first drive means for moving the second rotor shaft in a circumferential path about the first rotor shaft, the first rotor shaft rotating at substantially the same rotational speed as the second rotor shaft, and in the same direction whereby the first drive means rotates the rotor shafts at high speed to develop maximum shear and the second drive means orbits the second rotor shaft about the first rotor shaft at a low speed.
Claim 3
Dependent Claim
38 words
The mixer as claimed in claim 1 including a scraper element extending downwards at the side of the container, the scraper element moved circumferentially by the second drive means outside the circumferential path of the second rotor shaft.
Claim 4
Dependent Claim
35 words
The mixer as claimed in claim 2 wherein the scraper element, the first and second rotor shafts are substantially in line, with the first rotor shaft between the scraper element and the second rotor shaft.
Claim 5
Dependent Claim
45 words
The mixer as claimed in claim 1 wherein the rotor discs have a peripheral speed in the approximate range of 3,000 to 6,000 feet per minute, and the second rotor shaft moves in the circumferential path in the approximate range of 10 to 100 rpm.
References Cited (Backward Citations)
FR367315A
Cited
US1733516A
Cited
US1762081A
Cited
US2640688A
Cited
CH334213A
Cited
US3244410A
Cited
US3342459A
Cited
US3746267A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-04-18 | 1986-10-18 | 1987-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-04-18 | 1990-10-18 | 1991-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-04-18 | 1994-10-18 | 1995-04-19 | $7700.00 | Window Closed / Lapsed |