Patent US4477349A successfully refreshed from Google Patents.
US4477349A
Expired / Lapsed
US
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Metalurigical slag filtering apparatus
Assignee: Paul Wurth SA
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Filing: 1984-02-10
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Granted: 1984-10-16
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Expires: 2004-02-10
Abstract
Abstract A filtration apparatus comprised of a rotary drum having a plurality of internal vanes for conveying slag material therein therein is presented. The slag is conveyed upwardly by the vanes, after which it falls freely onto a conveyer belt passing longitudinally through the drum. Each vane consists of a retaining blade and a liquid permeable filtering blade spaced from the retaining blade. A deflecting means is positioned beneath the filtering blade. The deflecting means includes a deflecting plate associated with a support member. The support member and the retaining blade provide a supporting frame work for the rotary drum.
Inventors
- 👤 Guido Monteyne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:30
CPC Classifications
B; B65; B65G; B65G69/00; B01; B01D; B01D33/00; B01D33/06; B01D33/067; B01D33/11; B01D33/15; B01D33/155; B01D33/70; B01D33/72; B01D33/722; B65G59/00; B65G69/08; B65G69/20; B01D2201/00; B01D2201/28; B01D2201/282
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
119 words
A filtration apparatus including a rotary drum, said rotary drum having a foraminous wall along the outside surface thereof and end walls, said rotary drum having a plurality of internal vanes for filtering liquid and solid materials, said filtered solid material being conveyed upwardly and subsequently falling onto a conveyer belt passing longitudinally through the drum, each of said vanes comprising: retaining blade means extending from said drum; filtering blade means disposed across from said retaining blade means and separated by an opening therebetween, said filtering blade means permitting liquid to pass therethrough; and deflecting means positioned beneath said filtering blade means to prevents said separated filtered water from falling onto the filtered solid material of an adjacent vane.
Claim 2
Dependent Claim
119 words
A filtration apparatus including a rotary drum, said rotary drum having a foraminous wall along the outside surface thereof and end walls, said rotary drum having a plurality of internal vanes for filtering liquid and solid materials, said filtered solid material being conveyed upwardly and subsequently falling onto a conveyer belt passing longitudinally through the drum, each of said vanes comprising: retaining blade means extending from said drum; filtering blade means disposed across from said retaining blade means and separated by an opening therebetween, said filtering blade means permitting liquid to pass therethrough; and deflecting means positioned beneath said filtering blade means to prevents said separated filtered water from falling onto the filtered solid material of an adjacent vane.
Claim 3
Dependent Claim
28 words
The apparatus of claim 1 wherein: said rotary drum includes two sidewalls and wherein: said retaining blade means is attached between said two sidewalls of said rotary drum.
Claim 4
Dependent Claim
33 words
The apparatus of claim 2 wherein said filtering blade means includes: a plurality of juxtaposed plates, said plates being comprised of foraminous material, said plates having a first side and a second side.
Claim 5
Dependent Claim
13 words
The apparatus of claim 3 wherein: said foraminous material is liquid permeable mesh.
Claim 6
Dependent Claim
31 words
The apparatus of claim 3 including: first support means being attached to said first side of said plates; and second support means being attached to said second side of said plates.
Claim 7
Dependent Claim
19 words
The apparatus of claim 5 including: means for attaching said plates to said side walls of said rotating drum.
Claim 8
Dependent Claim
19 words
The apparatus of claim 3 including: means for attaching said plates to said side walls of said rotating drum.
Claim 9
Dependent Claim
29 words
The apparatus of claim 7 wherein each of said deflecting means includes: deflecting plate means; and a support member attached to a first side of said deflecting plate means.
Claim 10
Dependent Claim
15 words
The apparatus of claim 8 wherein: said support member is connected to said attaching means.
Claim 11
Dependent Claim
22 words
The apparatus of claim 1 wherein: said retaining blade means acts as a supporting framework for said filtering walls of said drum.
Claim 12
Dependent Claim
29 words
The apparatus of claim 1 wherein each of said deflecting means includes: deflecting plate means; and a support member attached to a first side of said deflecting plate means.
Claim 13
Dependent Claim
33 words
The apparatus of claim 11 wherein: said support member is L-shaped having a first and second end, said first and second ends being attached to said deflecting plate thereby forming a triangular configuration.
Claim 14
Dependent Claim
20 words
The apparatus of claim 11 wherein: said triangular configuration is closed thereby preventing exposure therein to filtered solid or liquid.
Claim 15
Dependent Claim
28 words
The apparatus of claim 1 including: plate means attached to said interior surface of said drum whereby said solid filtered material is prevented from contacting said foraminous wall.
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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) | 1987-10-16 | 1988-04-16 | 1988-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-16 | 1992-04-16 | 1992-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-16 | 1996-04-16 | 1996-10-16 | $7700.00 | Window Closed / Lapsed |