US3291305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic separator for mixtures of magnetic and non-magnetic material
Assignee: Eriez Manufacturing Co
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Filing: 1963-07-17
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Granted: 1966-12-13
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Expires: 1983-07-17
Abstract
No abstract record available.
Inventors
- 👤 Emerson J Tenpas
- 👤 Raymond A White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:28
CPC Classifications
B; B03; B03C; B03C1/00; B03C1/02; B03C1/16; B03C1/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A MAGNETIC SEPARATOR FOR SEPARATING MAGNETIC AND NON-MAGNETIC MIXTURES COMPRISING: AN UPPER CONVEYOR AND A LOWER CONVEYOR SUPPORTED ONE ABOVE THE OTHER AND CLOSELY SPACED TO EACH OTHER, ONE END OF SAID UPPER CONVEYOR BEING DISPOSED INTERMEDIATE THE ENDS OF SAID LOWER CONVEYOR, ONE END OF SAID LOWER CONVEYOR BEING DISPOSED INTERMEDIATE THE ENDS OF SAID UPPER CONVEYOR, MAGNETIC MEANS SPACED ALONG SAID UPPER CONVEYOR ADJACENT SAID LOWER CONVEYOR, SAID MAGNETIC MEANS HAVING POLES EXTENDING FROM ONE SIDE OF SAID CONVEYORS TO THE OTHER AND OF ALTERNATE POLARITY ALONG SAID UPPER CONVEYOR, A FEEDER FOR FEEDING MATERIAL ONTO SAID LOWER CONVEYOR, AND A RECEPTACLE FOR MAGNETIC MATERIAL ADJACENT THE END OF SAID UPPER CONVEYOR, SAID LOWER CONVEYOR BEING SUPPORTED ON A DRUM ADJACENT SAID FEEDER, SAID DRUM HAVING SPACED PERMANENT MAGNETIC POLE MEANS UNDER SAID LOWER CONVEYOR SPACED ADJACENT SAID FEEDER HAVING LIKE POLES EXTENDING FROM ONE SIDE OF SAID DRUM TO THE OTHER.
Claim 2
Dependent Claim
154 words
A MAGNETIC SEPARATOR FOR SEPARATING MAGNETIC AND NON-MAGNETIC MIXTURES COMPRISING: AN UPPER CONVEYOR AND A LOWER CONVEYOR SUPPORTED ONE ABOVE THE OTHER AND CLOSELY SPACED TO EACH OTHER, ONE END OF SAID UPPER CONVEYOR BEING DISPOSED INTERMEDIATE THE ENDS OF SAID LOWER CONVEYOR, ONE END OF SAID LOWER CONVEYOR BEING DISPOSED INTERMEDIATE THE ENDS OF SAID UPPER CONVEYOR, MAGNETIC MEANS SPACED ALONG SAID UPPER CONVEYOR ADJACENT SAID LOWER CONVEYOR, SAID MAGNETIC MEANS HAVING POLES EXTENDING FROM ONE SIDE OF SAID CONVEYORS TO THE OTHER AND OF ALTERNATE POLARITY ALONG SAID UPPER CONVEYOR, A FEEDER FOR FEEDING MATERIAL ONTO SAID LOWER CONVEYOR, AND A RECEPTACLE FOR MAGNETIC MATERIAL ADJACENT THE END OF SAID UPPER CONVEYOR, SAID LOWER CONVEYOR BEING SUPPORTED ON A DRUM ADJACENT SAID FEEDER, SAID DRUM HAVING SPACED PERMANENT MAGNETIC POLE MEANS UNDER SAID LOWER CONVEYOR SPACED ADJACENT SAID FEEDER HAVING LIKE POLES EXTENDING FROM ONE SIDE OF SAID DRUM TO THE OTHER.
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) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |