US3814334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Colloid mill
Assignee: Individual
•
Filing: 1972-07-14
•
Granted: 1974-06-04
•
Expires: 1992-07-14
Abstract
Abstract A colloid or stirring mill in which the material to be treated mixed with millbodies, e.g. glass, ceramical or synthetic pearls, is moved in a container by means of one or more rotating milling members, the treated material being discharged through a sieve or filter eliminating the millbodies or pearls, the filter being rotated for avoiding choking of the filter.
Inventors
- 👤 F Funk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:53
CPC Classifications
B; B02; B02C; B02C17/00; B02C17/16; B02C17/161
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
110 words
A stirring mill comprising, a container to receive a mixture of material to be treated and of millbodies, an outlet from said container for the treated material, a rotatable shaft traversing said container, a plurality of milling members rigidly connected With said shaft and spaced from one another, and a separator device in rigid connection with said shaft immediately adjacent a side wall of one of said milling members and forming a hollow space communicating with said outlet, said separator device comprising a circumferential filter rotating with said shaft and having openings widening in the direction of flow of the treated material for retaining said millbodies from said hollow space.
Claim 2
Dependent Claim
110 words
A stirring mill comprising, a container to receive a mixture of material to be treated and of millbodies, an outlet from said container for the treated material, a rotatable shaft traversing said container, a plurality of milling members rigidly connected With said shaft and spaced from one another, and a separator device in rigid connection with said shaft immediately adjacent a side wall of one of said milling members and forming a hollow space communicating with said outlet, said separator device comprising a circumferential filter rotating with said shaft and having openings widening in the direction of flow of the treated material for retaining said millbodies from said hollow space.
Claim 3
Dependent Claim
14 words
A stirring mill as claimed in claim 1, said filter consisting of synthetic material.
Claim 4
Dependent Claim
18 words
A stirring mill as claimed in claim 1, said filter having elongated gap openings lying in circumferential direction.
Claim 5
Dependent Claim
27 words
A stirring mill as claimed in claim 2, wherein said separator device includes a circumferential perforated supporting ring, said synthetic filter being supported on said supporting ring.
Claim 6
Dependent Claim
20 words
A stirring mill as claimed in claim 1, said filter comprising a plurality of piled discs, forming slots between them.
Claim 7
Dependent Claim
52 words
A stirring mill as claimed in claim 5, said piled discs having on their circumference axially projecting annular flanges, and further having radial ribs forming passage channels between said ribs, said separator device including spacer rings between said piled discs to determine the clear width of the slots between the piled discs.
Claim 8
Dependent Claim
15 words
A stirring mill as claimed in claim 5, said piled discs consisting of synthetic material.
Claim 9
Dependent Claim
34 words
A stirring mill as claimed in claim 1, including at least one stripper inside the rotating filter disposed adjacent said openings in said filter to preclude blockage of said filter by material passing therethrough.
Claim 10
Dependent Claim
12 words
A stirring mill as claimed in claim 8, said stripper being stationary.
Claim 11
Dependent Claim
17 words
A stirring mill as claimed in claim 8, wherein several strippers are arranged about a stationary wheel.
Claim 12
Dependent Claim
22 words
A stirring mill as claimed in claim 8, wherein said stripper is inclined with respect to the circumferential surface of said filter.
Claim 13
Dependent Claim
26 words
A stirring mill as claimed in claim 8, wherein said stripper extends from the internal surface of said filter to the exit of said separator device.
Claim 14
Dependent Claim
23 words
A stirring mill as claimed in claim 8, wherein said stripper, at least at its end adjacent said filter, has a knife edge.
Claim 15
Dependent Claim
31 words
A stirring mill as claimed in claim 1, wherein the separator device is fixed to said one adjacent milling member, said milling member forming a side wall of the separator device.
References Cited (Backward Citations)
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Cited
US1950713A
Cited
US1946511A
Cited
US2014640A
Cited
US2674927A
Cited
US2818220A
Cited
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Cited
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Cited
US3672580A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |