US4129261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Agitating mill
Assignee: Draiswerke GmbH
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Filing: 1977-06-29
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Granted: 1978-12-12
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Expires: 1997-06-29
Abstract
Abstract An agitating mill in whose cylindrical grinding container a mixing shaft is disposed, is to be partially filled with grinding media. The mixing shaft is made hollow and coolable. Substantially radially projecting discs are mounted on the mixing shaft, with mixing bars fastened to the discs. The discs can be made in the form of coolable hollow discs.
Inventors
- 👤 Kaspar Engels
- 👤 Karlheinz Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:15
CPC Classifications
B; B02; B02C; B02C17/00; B02C17/16
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
88 words
In an agitating mill with a cylindrical grinding container defining a grinding space, and with a rotatable drivable mixer mounted concentrically therein, the mixer including a hollow mixing shaft having an axis and mixing bars projecting substantially radially with respect to said axis into said grinding space, the container having a grinding stock inlet means and ground-stock outlet means, the improvement comprising radially projecting discs mounted on said hollow mixing shaft, said mixing bars being fastened to said discs; and a grinding media partially filling said grinding space.
Claim 2
Dependent Claim
88 words
In an agitating mill with a cylindrical grinding container defining a grinding space, and with a rotatable drivable mixer mounted concentrically therein, the mixer including a hollow mixing shaft having an axis and mixing bars projecting substantially radially with respect to said axis into said grinding space, the container having a grinding stock inlet means and ground-stock outlet means, the improvement comprising radially projecting discs mounted on said hollow mixing shaft, said mixing bars being fastened to said discs; and a grinding media partially filling said grinding space.
Claim 3
Dependent Claim
23 words
An improved agitating mill according to claim 1, including opposing bars mounted on the container and projecting approximately radially into said grinding space.
Claim 4
Dependent Claim
45 words
An improved agitating mill according to claim 1, wherein said discs are made in the form of hollow discs defining hollow spaces in fluid communication with the interior of said hollow shaft whereby cooling fluid can be fed to the hollow spaces of said discs.
Claim 5
Dependent Claim
24 words
An improved agitating mill according to claim 3, including conducting discs disposed individually in respective ones of said hollow spaces within said hollow discs.
Claim 6
Dependent Claim
20 words
An improved agitating mill according to claim 1, including opposing bars which are spaced from and radially overlap said discs.
Claim 7
Dependent Claim
16 words
An improved agitating mill according to claim 5, including a cooling jacket about said grinding container.
Claim 8
Dependent Claim
33 words
An improved agitating mill according to claim 6, wherein said cooling jacket is recessed in the vicinity of the point of attachment of said opposing bars to a wall of said grinding container.
Claim 9
Dependent Claim
26 words
An improved agitating mill according to claim 5, including a cooling jacket about said container and wherein said opposing bars penetrate said cooling jacket from outside.
Claim 10
Dependent Claim
38 words
An improved agitating mill according to claim 1, including a cooling jacket about said container, and opposing bars mounted on the container and projecting into said grinding space, said bars being hollow and open to said cooling jacket.
Claim 11
Dependent Claim
21 words
An improved agitating mill according to claim 1, including means for feeding cooling fluid to the interior of said hollow shaft.
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) | 1981-12-11 | 1982-06-12 | 1982-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-11 | 1986-06-12 | 1986-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-11 | 1990-06-12 | 1990-12-12 | $7700.00 | Window Closed / Lapsed |