US2743815A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous centrifugal jig separator
Assignee: Centrijig Corp
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Filing: 1952-09-10
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Granted: 1956-05-01
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Expires: 1972-09-10
Abstract
No abstract record available.
Inventors
- 👤 Goodwin Norris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:18
CPC Classifications
B; B03; B03B; B03B5/00; B03B5/28; B03B5/30; B03B5/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
189 words
THE METHOD OF SELECTIVELY SEPARATING A HEAVY MINERAL FROM A LARGE VOLUME OF LIGHTER MINERAL, COMPRISING THE FOLLOWING STEPS: FORMING A SLURRY OF THE MINERALS TO BE SEPARATED HAVING A DENSITY OF 60% SOLIDS BY WEIGHT, ADDING THERETO A MINERAL BLANKET MATERIAL HAVING A SPECIFIC GRAVITY INTERMEDIATE OF THE SPECIFIC GRAVITY OF THE MINERALS TO BE SEPARATED AND A PARTICLE SIZE APPROXIMATING THE FINEST PARTICLE OF THE LIGHTER MINERAL SUFFICIENT TO FORM A BLANKET AT LEAST 4 PARTICLES THICK IN THE OPEN CHAMBER, ROTATING SAID MATERIALS TO GIVE IT A PERIPHERAL SPEED OF AT LEAST 1,000 FEET PER MINUTE, PERIPHERALLY FEEDING SAID ROTATING MATERIAL INTO A CIRCULAR OPEN CHAMBER TO PERMIT THE FORMATION AND MAINTENANCE OF A FREE VORTEX, MAINTAINING A LIVE BED OF BLANKET MATERIAL ADJACENT THE WALL OF THE OPEN CHAMBER, WHEREIN THE PARTICLES THEREOF ARE IN FREE ROLLING CONTACT, REMOVING THE LIGHTER MINERALS FROM THE CENTRAL PORTION OF SAID FREE VORTEX OF SAID CHAMBER, REMOVING THE HEAIVER MINERAL AND BLANKET MATERIAL FROM THE PERIMETER OF SAID CHAMBER AT THE BOTTOM THEREOF, SEPARATING SAID BLANKET MATERIAL FROM SAID HEAVIER MINERAL, AND RETURNING THE BLANKET MATERIAL FOR REUSE.
Claim 2
Independent Claim
189 words
THE METHOD OF SELECTIVELY SEPARATING A HEAVY MINERAL FROM A LARGE VOLUME OF LIGHTER MINERAL, COMPRISING THE FOLLOWING STEPS: FORMING A SLURRY OF THE MINERALS TO BE SEPARATED HAVING A DENSITY OF 60% SOLIDS BY WEIGHT, ADDING THERETO A MINERAL BLANKET MATERIAL HAVING A SPECIFIC GRAVITY INTERMEDIATE OF THE SPECIFIC GRAVITY OF THE MINERALS TO BE SEPARATED AND A PARTICLE SIZE APPROXIMATING THE FINEST PARTICLE OF THE LIGHTER MINERAL SUFFICIENT TO FORM A BLANKET AT LEAST 4 PARTICLES THICK IN THE OPEN CHAMBER, ROTATING SAID MATERIALS TO GIVE IT A PERIPHERAL SPEED OF AT LEAST 1,000 FEET PER MINUTE, PERIPHERALLY FEEDING SAID ROTATING MATERIAL INTO A CIRCULAR OPEN CHAMBER TO PERMIT THE FORMATION AND MAINTENANCE OF A FREE VORTEX, MAINTAINING A LIVE BED OF BLANKET MATERIAL ADJACENT THE WALL OF THE OPEN CHAMBER, WHEREIN THE PARTICLES THEREOF ARE IN FREE ROLLING CONTACT, REMOVING THE LIGHTER MINERALS FROM THE CENTRAL PORTION OF SAID FREE VORTEX OF SAID CHAMBER, REMOVING THE HEAIVER MINERAL AND BLANKET MATERIAL FROM THE PERIMETER OF SAID CHAMBER AT THE BOTTOM THEREOF, SEPARATING SAID BLANKET MATERIAL FROM SAID HEAVIER MINERAL, AND RETURNING THE BLANKET MATERIAL FOR REUSE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-01 | 1959-10-31 | 1960-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-01 | 1963-10-31 | 1964-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-01 | 1967-10-31 | 1968-05-01 | $7700.00 | Window Closed / Lapsed |