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US3899416A Expired / Lapsed US ⏱️ 0.0 years remaining

Sorting device separating a powder mixture into spheroidal and sharp-edged particles

Assignee: Hoechst AG
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Filing: 1973-10-29
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Granted: 1975-08-12
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Expires: 1993-10-29
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Abstract

Abstract Sorting device for the separation of a powder mixture into spheroidal particles and sharp-edged particles. The device comprises an inclined cascade-sorting channel or tunnel, a vibrating chute above the upper end of the channel or tunnel and receiving means collecting spheroidal and sharp-edged particles, respectively, the said means being placed below the lower end of the channel or tunnel. The cascade-sorting channel or tunnel comprises more particularly an elongated container, which has an inlet disposed at its upper end and has outlets disposed at its lower end. A plurality of separating cascade members, which have a length l, are spaced apart at intervals a, are disposed at different levels at separations h and are inclined at an angle Beta , with respect to the horizontal, are secured to the side walls of the container, and a separating plate is positioned near the lower end of the container.

Inventors

  • 👤 Gunther Schwartz
  • 👤 Klaus Frank

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-07 20:33
CPC Classifications
B; B07; B07B; B07B13/00; B07B13/10; B07B13/11

Claims Analysis

Total Claims: 12
Claim 1
Independent Claim 193 words
A SORTING DEVICE FOR SEPARATING A POWDER INTO SPHEROIDAL PARTICLES AND SHARP-EDGED PARTICLES, WHEREIN A PLURALITY OF SEPARATING CASCADE MEMBERS ARE SPACED APART, ARE DISPOSED AT SUCCESSIVELY LOWER LEVELS AND ARE INCLINED WITH RESPECT TO THE HORIZONTAL SO AS TO FORM AN INCLINED CASCADE-SORTING TUNNEL, AND ARE SECURED TO THE SIDE WALLS OF AN ELONGATED CONTAINER HAVING A INLET DISPOSED AS ITS UPPER END AND OUTLETS DISPOSED AS ITS LOWER END, THE SORTING DEVICE COMPRISING BRAKING APRONS SECURED ABOVE THE SEPARATING-CASCADE MEMBERS TO FORM PART OF THE SORTING TUNNEL, A SEPARATION PLATE BEING POSITIONED NEAR THE LOWER END OF THE ELONGATED CONTAINER, RECEIVING MEANS COLLECTING SPHEROIDAL PARTICLES AND SHARP-EDGED PARTICLES, RESPECTIVELY, THE RECEIVING MEANS BEING PLACED BELOW THE LOWER END OF SAID CONTAINER ON BOTH SIDES OF THE SEPARATION PLATE, A VIBRATING CHUTE POSITIONED ABOVE THE UPPER END OF THE CASCADE-SORTING TUNNEL, A FRAME SUPPORTING THE CONTAINER, THE FRAME PROVIDING A DOWNWARDLY INCLINED SUPPORTING PLANE HAVING AN ANGLE A WITH A RESPECT TO THE HORIZONTAL, A PLURALITY OF VIBRATORS AND SHOCK ABSORBERS BEING INTERPOSED BETWEEN THE CONTAINER AND THE FRAME, AND THE BRAKING APRONS BEING DISPOSED OVER THE SPACES BETWEEN THE CASCADE MEMBERS.
Claim 2
Dependent Claim 193 words
A SORTING DEVICE FOR SEPARATING A POWDER INTO SPHEROIDAL PARTICLES AND SHARP-EDGED PARTICLES, WHEREIN A PLURALITY OF SEPARATING CASCADE MEMBERS ARE SPACED APART, ARE DISPOSED AT SUCCESSIVELY LOWER LEVELS AND ARE INCLINED WITH RESPECT TO THE HORIZONTAL SO AS TO FORM AN INCLINED CASCADE-SORTING TUNNEL, AND ARE SECURED TO THE SIDE WALLS OF AN ELONGATED CONTAINER HAVING A INLET DISPOSED AS ITS UPPER END AND OUTLETS DISPOSED AS ITS LOWER END, THE SORTING DEVICE COMPRISING BRAKING APRONS SECURED ABOVE THE SEPARATING-CASCADE MEMBERS TO FORM PART OF THE SORTING TUNNEL, A SEPARATION PLATE BEING POSITIONED NEAR THE LOWER END OF THE ELONGATED CONTAINER, RECEIVING MEANS COLLECTING SPHEROIDAL PARTICLES AND SHARP-EDGED PARTICLES, RESPECTIVELY, THE RECEIVING MEANS BEING PLACED BELOW THE LOWER END OF SAID CONTAINER ON BOTH SIDES OF THE SEPARATION PLATE, A VIBRATING CHUTE POSITIONED ABOVE THE UPPER END OF THE CASCADE-SORTING TUNNEL, A FRAME SUPPORTING THE CONTAINER, THE FRAME PROVIDING A DOWNWARDLY INCLINED SUPPORTING PLANE HAVING AN ANGLE A WITH A RESPECT TO THE HORIZONTAL, A PLURALITY OF VIBRATORS AND SHOCK ABSORBERS BEING INTERPOSED BETWEEN THE CONTAINER AND THE FRAME, AND THE BRAKING APRONS BEING DISPOSED OVER THE SPACES BETWEEN THE CASCADE MEMBERS.
Claim 3
Dependent Claim 49 words
The sorting device as claimed in claim 1, wherein the angle of inclination Alpha of the inclined supporting plane can be adjusted by means of a prop which has a series of apertures spaced along its length and which is pivoted on a horizontal member of the supporting frame.
Claim 4
Dependent Claim 22 words
The sorting device as claimed in claim 1, wherein the angle of inclination Alpha comprises an angle between 10* and 50* .
Claim 5
Dependent Claim 22 words
The sorting device as claimed in claim 3, wherein the angle of inclination Alpha comprises an angle between 15* and 30* .
Claim 6
Dependent Claim 20 words
The sorting device as claimed in claim 1, wherein the angle Beta comprises an angle between 3* and 20* .
Claim 7
Dependent Claim 20 words
The sorting device as claimed in claim 5, wherein the angle Beta comprises an angle between 4* and 8* .
Claim 8
Dependent Claim 67 words
The sorting device as claimed in claim 1, wherein the members have a length l spaced apart at intervals a and are disposed at different levels at a vertical separation h from each other, and, a ratio between (0.5 - 1) : (0.5 - 1) : (7 - 25) is selected for the intervals a, the height h of the separating cascade members and their length l.
Claim 9
Dependent Claim 18 words
The sorting device as claimed in claim 1, wherein a feed funnel is mounted above the vibrating chute.
Claim 10
Dependent Claim 32 words
A sorting device as set forth in claim 1, wherein the separating cascade members are inclined backwardly at an angle Beta of between about 4* and 8* with respect to the horizontal.
Claim 11
Dependent Claim 21 words
A sorting device as set forth in claim 1, wherein the braking aprons have a convex surface disposed over the spaces.
Claim 12
Dependent Claim 38 words
A sorting device as set forth in claim 1, wherein the braking aprons slope downwardly from the adjacent upper cascade member toward the adjacent lower cascade member for directing particles from upper cascade members to lower cascade members.

References Cited (Backward Citations)

US171502A Cited
US773928A Cited
US2549316A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-08-11 1979-02-10 1979-08-12 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-08-11 1983-02-10 1983-08-12 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-08-11 1987-02-10 1987-08-12 $7700.00 Window Closed / Lapsed

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