US3819050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feed distributor for screening machine
Assignee: ORVILLE SIMPSON CO US
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Filing: 1972-12-08
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Granted: 1974-06-25
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Expires: 1992-12-08
Abstract
Abstract A distributor for directing an incoming feed stream uniformly to the different screen areas of a screening machine. The stream falls on a rotating, canted thrower which throws or slings the material outwardly along a rotating circular path, so that it falls between vanes on a roof over the screen. The vanes are angulated to direct the material over the edge of the roof, so that it falls at substantially uniform rates to different areas of the screen below.
Inventors
- 👤 W Lower
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:06
CPC Classifications
B; B07; B07B; B07B1/00; B07B1/28; B07B1/38; B07B13/00; B07B13/14; B07B13/16
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
150 words
Apparatus for distributing incoming material over the area of a screen in a screening machine, comprising, a thrower angulated to deflect falling material outwardly along a radial path, said thrower being rotatable about a generally vertical axis, drive means for rotating said thrower so that said radial path rotates about said axis, feed means for directing the incoming material so that it falls upon said thrower, a roof disposed centrally above said screen, said roof extending outwardly and downwardly from a peak thereof toward an outer edge that is positioned above the screen, and a series of vanes mounted on said roof around said axis and directed outwardly from said thrower, the vanes being positioned on the roof so as to direct material slung between them by rotation of said thrower about said axis to different areas of said screen at substantailly uniform rates of flow per unit screen area.
Claim 2
Dependent Claim
150 words
Apparatus for distributing incoming material over the area of a screen in a screening machine, comprising, a thrower angulated to deflect falling material outwardly along a radial path, said thrower being rotatable about a generally vertical axis, drive means for rotating said thrower so that said radial path rotates about said axis, feed means for directing the incoming material so that it falls upon said thrower, a roof disposed centrally above said screen, said roof extending outwardly and downwardly from a peak thereof toward an outer edge that is positioned above the screen, and a series of vanes mounted on said roof around said axis and directed outwardly from said thrower, the vanes being positioned on the roof so as to direct material slung between them by rotation of said thrower about said axis to different areas of said screen at substantailly uniform rates of flow per unit screen area.
Claim 3
Dependent Claim
24 words
The apparatus of claim 1 wherein said roof is in the form of an inverted V having a peak which passes through said axis.
Claim 4
Dependent Claim
35 words
The apparatus of claim 2 wherein said screen is rectangular and said vanes divide each side of said roof into a plurality of flow areas for directing said material to different areas of said screen.
Claim 5
Dependent Claim
37 words
The apparatus of claim 3 wherein said vanes are positioned on each side of said peak to direct flow uniformly among a central part of the screen and two areas at the respective ends of the screen.
Claim 6
Dependent Claim
26 words
The apparatus of claim 1 wherein said thrower is in the form of a flat plate which is tilted at an angle with respect to horizontal.
Claim 7
Dependent Claim
26 words
The apparatus of claim 5 which further includes means for changing the angulation of said plate, and means for holding the plate at a desired angulation.
Claim 8
Independent Claim
99 words
A method of distributing incoming material over the area of a screen in a screening machine, said method comprising, directing said material to fall as a stream, deflecting essentially the entire stream outwardly along a radial path, simultaneously rotating the radial path of the deflected material about a vertical axis so that the material is distributed circularly, dividing the deflected material into angularly separate portions, and conducting the angularly separated portions outwardly and downwardly to different sections of the screen so that the material is fed to the different sections At rates per unit area which are substantially uniform.
Claim 9
Independent Claim
99 words
A method of distributing incoming material over the area of a screen in a screening machine, said method comprising, directing said material to fall as a stream, deflecting essentially the entire stream outwardly along a radial path, simultaneously rotating the radial path of the deflected material about a vertical axis so that the material is distributed circularly, dividing the deflected material into angularly separate portions, and conducting the angularly separated portions outwardly and downwardly to different sections of the screen so that the material is fed to the different sections At rates per unit area which are substantially uniform.
Claim 10
Dependent Claim
51 words
The method of claim 7 wherein said material is directed to fall as a stream onto a thrower which is tilted to deflect the stream outwardly along said radial path, and wherein said thrower is rotated about said vertical axis thereby rotating the radial path along which said stream is deflected.
References Cited (Backward Citations)
US465979A
Cited
US1100971A
Cited
US1575991A
Cited
US2796237A
Cited
US2784842A
Cited
FR1228992A
Cited
US3416660A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-24 | 1977-12-24 | 1978-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-24 | 1981-12-24 | 1982-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-24 | 1985-12-24 | 1986-06-25 | $7700.00 | Window Closed / Lapsed |