Patent US3864066A successfully refreshed from Google Patents.
US3864066A
Expired / Lapsed
US
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Apparatus for spreading comminuted partly cementitious material on a moving support
Assignee: G Siempelkamp GmbH and Co KG
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Filing: 1973-06-13
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Granted: 1975-02-04
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Expires: 1993-06-13
Abstract
Abstract A mass of comminuted partly cementitious material, such as a mixture of asbestos fibers and gypsum, is distributed over a limited area of a continuously moving conveyor surface by being deposited on an array of parallel rollers with interdigitated disks forming narrow slots in the intervening gaps, the particles of the mass dropping through these spaces onto the conveyor to form a pile. Jets of water from nozzles disposed underneath each roller irrigate the mixture as it descends.
Inventors
- 👤 Klaus Gerhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:45
CPC Classifications
B; B28; B28B; B28B13/00; B28B13/02; B28B1/00; B28B1/52; B28B1/526
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
146 words
An apparatus for converting a mass of comminuted partly cementitious material into a moistened continuous layer, comprising: a conveyor with a horizontal supporting surface; an array of juxtaposed rollers with parallel horizontal axes above said supporting surface, each roller including a cylindrical hub and a multiplicity of axially spaced annular fins on said hub, the fins of adjacent rollers being interdigitated with formation of narrow slots in the gaps between the hubs thereof; drive means for codirectionally rotating said rollers and simultaneously moving said conveyor; feed means for continuously depositing comminuted cementitious material on said rollers for distribution into a plurality of flows descending in a free fall through said gaps to said supporting surface; flow-guiding means underneath said rollers for confining the descending material to the vicinity of said gaps; and spray means underneath said rollers for irrigating the descending flows of said cementitious material.
Claim 2
Independent Claim
146 words
An apparatus for converting a mass of comminuted partly cementitious material into a moistened continuous layer, comprising: a conveyor with a horizontal supporting surface; an array of juxtaposed rollers with parallel horizontal axes above said supporting surface, each roller including a cylindrical hub and a multiplicity of axially spaced annular fins on said hub, the fins of adjacent rollers being interdigitated with formation of narrow slots in the gaps between the hubs thereof; drive means for codirectionally rotating said rollers and simultaneously moving said conveyor; feed means for continuously depositing comminuted cementitious material on said rollers for distribution into a plurality of flows descending in a free fall through said gaps to said supporting surface; flow-guiding means underneath said rollers for confining the descending material to the vicinity of said gaps; and spray means underneath said rollers for irrigating the descending flows of said cementitious material.
Claim 3
Dependent Claim
29 words
An apparatus as defined in claim 1 wherein the diameters of said fins are the same for all said rollers, their axes being disposed on a common horizontal plane.
Claim 4
Dependent Claim
28 words
An apparatus as defined in claim 1 wherein said feed means opens from above onto the outermost roller of said array on the upstream side of said conveyor.
Claim 5
Dependent Claim
37 words
An apparatus as defined in claim 1 wherein said spray means includes a row of nozzles respectively aligned with the hubs of said rollers, each of said flows descending between an upstream nozzle and a downstream nozzle.
Claim 6
Dependent Claim
29 words
An apparatus as defined in claim 4 wherein at least some of said nozzles are inclined to train respective jets of water upon said flows in the downstream direction.
Claim 7
Dependent Claim
35 words
An apparatus as defined in claim 4 wherein said flow-guiding means comprises a set of substantially vertical baffles terminating with substantial clearance above said supporting surface, said nozzles being disposed between pairs of said baffles.
References Cited (Backward Citations)
US1353512A
Cited
US1667292A
Cited
US2165718A
Cited
US2331145A
Cited
US2923030A
Cited
US2926719A
Cited
US2961361A
Cited
US3039137A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |