US3752410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for sizing particulate material
Assignee: Cleveland Advanced Manufacturing Program
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Filing: 1971-07-19
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Granted: 1973-08-14
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Expires: 1991-07-19
Abstract
Abstract Apparatus for sizing particulate material comprising an inclined screen mesh for receiving material adjacent the upper end to flow toward the lower end and means for vibrating said mesh to sift on-size particles therethrough. Lump breaker means is provided intermediate the upper and lower ends of the screen for impact breakage of agglomerated oversize lumps of said particulate material and for retarding the downward travel of said oversize material. Said lump breaker includes at least one rotating paddle extending transversely across said screen mesh and formed of flexible material, and a breaker plate above the screen mesh for protecting the screen and cooperating with the paddle to help break up large lumps of material into smaller size. The paddle is rotated in a direction to impact the oversize lumps upwardly on said screen mesh counter to the general flow direction of material downwardly toward the lower end.
Inventors
- 👤 H Dienst
- 👤 L Rikker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:18
CPC Classifications
B; B02; B02C; B02C13/00; B02C13/13; B02C13/26; B02C13/28
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
103 words
Apparatus for sizing particulate material comprising an inclined screen mesh; means for introducing fresh material adjacent the upper end of the mesh for movement toward the lower end and through the mesh; means for vibrating said screen mesh, and lump breaker means intermediate the ends of said screen mesh for retarding the flow of oversize particulate material toward said lower end, said lump breaker means including a rotary paddle wheel assembly having a plurality of paddles extended transversely across said mesh and formed of flexible material, a breaker plate above Said mesh adjacent the path of said paddles for supporting material impacted thereby.
Claim 2
Dependent Claim
103 words
Apparatus for sizing particulate material comprising an inclined screen mesh; means for introducing fresh material adjacent the upper end of the mesh for movement toward the lower end and through the mesh; means for vibrating said screen mesh, and lump breaker means intermediate the ends of said screen mesh for retarding the flow of oversize particulate material toward said lower end, said lump breaker means including a rotary paddle wheel assembly having a plurality of paddles extended transversely across said mesh and formed of flexible material, a breaker plate above Said mesh adjacent the path of said paddles for supporting material impacted thereby.
Claim 3
Dependent Claim
39 words
The apparatus of claim 1 wherein said breaker plate is positioned beneath the axis of rotation of said paddles within the region swept by said paddles for continuous contact with the lower edge portion of at least one paddle.
Claim 4
Dependent Claim
20 words
The apparatus of claim 1 including enclosure means above said screen enclosing said paddle wheel assembly providing deflecting impact surfaces.
Claim 5
Dependent Claim
36 words
The apparatus of claim 1 wherein said paddle wheel assembly includes a wheel supporting member having planar surfaces thereon and means for removably securing said paddles along the inner edge portions thereon to said planar surfaces.
Claim 6
Dependent Claim
37 words
The apparatus of claim 1 wherein said means for vibrating said screen includes high frequency electromagnetic vibrator means for vibrating said screen at least one location thereon upslope on the screen from said rotary paddle wheel assembly.
Claim 7
Dependent Claim
30 words
The apparatus of claim 5 including means for driving said paddle wheel assembly to return material upslope on said screen into the vicinity of said vibration location on said screen.
Claim 8
Dependent Claim
53 words
The apparatus of claim 1 including frame means supporting said screen around the peripheral edges thereof, said vibrating means supported from said frame means and attached to vibrate said screen relative to said frame, and means for supporting said paddle wheel assembly for rotation about an axis in fixed relation to said frame.
Claim 9
Dependent Claim
39 words
The apparatus of claim 7 including housing means above said screen supported from said frame for containing a level of material moving along the surface of said screen, said housing including removable covers spaced above said level of material.
Claim 10
Dependent Claim
48 words
The apparatus of claim 8 wherein said enclosure means extends above adjacent portions of said covers for providing an enlarged enclosed area around said paddle wheel assembly for holding an additional volume of material at a level above the adjacent level of material on said screen upslope therefrom.
Claim 11
Dependent Claim
46 words
The apparatus of claim 9 wherein said enclosure includes upper wall portions closely and angularly spaced around a cylindrical path traversed by the outer edges of said rotating paddles for impact breakage of material centrifuged outwardly of the axis of rotation of said paddle wheel assembly.
Claim 12
Dependent Claim
158 words
Apparatus for sizing particulate material comprising a housing having walls, a paddle wheel mounted in said housing for impacting said material against said walls, said walls including at least one resilient portion deflectable toward and away from said paddle wheel, said resilient portion comprising a sheet of thin resilient material supported around its periphery on a rectangular frame defining an enlarged opening therein, and freely deflectable into and out of said opening to receive and return said material toward said paddle wheel, said paddle wheel including a plurality of paddles formed of resilient material and mounted for rotation about an axis parallel of said walls, said walls positioned substantially parallel of a plane tangent to the path of travel of the outer edges of said paddles, and a rigid breaker plate parallel of said axis of rotation and mounted within the path of travel of said paddles causing deflection of the same on rotation of said paddle wheel.
Claim 13
Dependent Claim
158 words
Apparatus for sizing particulate material comprising a housing having walls, a paddle wheel mounted in said housing for impacting said material against said walls, said walls including at least one resilient portion deflectable toward and away from said paddle wheel, said resilient portion comprising a sheet of thin resilient material supported around its periphery on a rectangular frame defining an enlarged opening therein, and freely deflectable into and out of said opening to receive and return said material toward said paddle wheel, said paddle wheel including a plurality of paddles formed of resilient material and mounted for rotation about an axis parallel of said walls, said walls positioned substantially parallel of a plane tangent to the path of travel of the outer edges of said paddles, and a rigid breaker plate parallel of said axis of rotation and mounted within the path of travel of said paddles causing deflection of the same on rotation of said paddle wheel.
Claim 14
Dependent Claim
30 words
The apparatus of claim 11 wherein said breaker plate is parallel of at least one of said resilient portions of said walls on opposite sides of said axis of rotation.
Claim 15
Dependent Claim
120 words
Apparatus for sizing particulate material comprising an inclined screen mesh; means for introducing fresh material adjacent the upper end of said mesh for movement toward the lower end thereof as on size material passes downwardly through the sized openings of said mesh; means for vibrating said mesh; and flow retarding means intermediate the upper and lower end of said mesh for retarding the downward movement of at least some of the material flowing over said screen mesh, said retarding means including rotary paddle means extended transversely of the direction of material flow toward said lower end of the mesh and movable against the direction of material flow to retain some of the material on said mesh for an extended interval.
Claim 16
Dependent Claim
120 words
Apparatus for sizing particulate material comprising an inclined screen mesh; means for introducing fresh material adjacent the upper end of said mesh for movement toward the lower end thereof as on size material passes downwardly through the sized openings of said mesh; means for vibrating said mesh; and flow retarding means intermediate the upper and lower end of said mesh for retarding the downward movement of at least some of the material flowing over said screen mesh, said retarding means including rotary paddle means extended transversely of the direction of material flow toward said lower end of the mesh and movable against the direction of material flow to retain some of the material on said mesh for an extended interval.
Claim 17
Dependent Claim
45 words
The apparatus of claim 13 wherein said paddle means includes a plurality of paddles formed of flexible material rotating about an axis spaced above said mesh for impacting said material in a direction opposite the downward flow thereof toward the lower end of said mesh.
Claim 18
Dependent Claim
26 words
The apparatus of claim 14 including housing means enclosing an upper portion of said paddle means and including surfaces deflecting said material toward said screen mesh.
Claim 19
Dependent Claim
16 words
The apparatus of claim 14 including support means for adjusting the inclination of said screen mesh.
Claim 20
Dependent Claim
30 words
The apparatus of claim 14 including a shield plate between said screen mesh and said paddle means for engaging said paddle means to prevent contact thereof against said screen mesh.
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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) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |