US3591000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for sizing and separating solids
Assignee: IRA B HUMPHREYS
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Filing: 1969-10-27
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Granted: 1971-07-06
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Expires: 1989-10-27
Abstract
Abstract A method and apparatus for sizing and separating solid particulates through utilization of the Coanda effect obtained by introducing a liquid slurry containing suspended solid particulates of differing sizes and shapes therein onto a torus or curvilinear surface to enable the particulates to separate out of the slurry stream as the same flows over the torus and collecting the particulates in different zones corresponding to their zones of discharge from the slurry with the larger particulates being collected at the greatest distance tangentially from the torus.
Inventors
- 👤 Ira B Humphreys
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:34
CPC Classifications
B; B07; B07B; B07B13/00; B07B13/003
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
45 words
Apparatus as defined in claim 1 wherein said first and second recited collecting means each consists of a circular splitter ring disposed substantially concentrically of said curvilinear torus, each said circular splitter ring defining the uppermost edge of a collecting hopper opening vertically there beneath.
Claim 2
Dependent Claim
67 words
Apparatus as defined in claim 1 wherein said torus constitutes an integral convex surface continuation of the lower extremity of said inclined surface whereby said slurry adheres to and follows said torus under the influence of the Coanda effect to carry the fine particulates with said stream to the lowermost extremity of said torus while discharging larger particulates from said stream intermediate the length of said convex
Claim 3
Dependent Claim
57 words
Apparatus as defined in claim 1 wherein said fixed circular inclined surface takes the form of a cone having a convex torus forming a skirtlike lower extremity continuously about said cone, and wherein a Venturi nozzle is positioned in vertical alignment above the apex axis of said cone for discharge of slurry therethrough on the conical surface.
Claim 4
Dependent Claim
33 words
Apparatus as defined in claim 1 wherein a Venturi nozzle is incorporated in the slurry delivery system to produce mixing of said slurry and uniform dispersal of the suspension of the particulates therein.
Claim 5
Independent Claim
64 words
A method of sizing and separating coarse, middling and fine particulates suspended in a liquid slurry comprising, uniformly flowing said slurry in a stream of diminishing depth downwardly and about a convex torus having a vertical axis, collecting coarse particulates outwardly from an intermediate portion of said torus, and collecting middling and fine particulates at positions progressively lower and less distant from said torus.
Claim 6
Dependent Claim
110 words
Apparatus for separating and separately collecting particulates of different sizes and shapes suspended in a liquid slurry comprising an inclined surface fixed against movement and having a dimension laterally of the lower end thereof at least as great as the dimension laterally of the upper end thereof, a torus forming and defining an integral continuation of the lower end of said inclined surface and passing the stream of slurry continuously thereabout, means for collecting said slurry and fine particulates located substantially vertically beneath the lowermost portion of said torus, and means disposed outwardly from an intermediate portion of said torus for receiving and collecting large particulates discharging from said slurry.
Claim 7
Dependent Claim
138 words
Apparatus for separating and separately collecting particulates of different sizes and shapes suspended in a liquid slurry comprising an inclined surface fixed against movement and adapted to receive a stream of slurry unto the upper end thereof, said inclined surface having a greater width transversely to the direction of stream flow at the lower end than at the upper end to produce a stream of diminishing depth from the upper to the lower end thereof, a torus forming and defining an integral continuation of the lower end of said inclined surface and passing the stream of slurry continuously thereabout, means for collecting said slurry and fine particulates located substantially vertically beneath the lowermost portion of said torus, and means disposed outwardly from an intermediate portion of said torus for receiving and collecting large particulates discharging from said slurry.
References Cited (Backward Citations)
US2542095A
Cited
US2902154A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |