US3246753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-intensity magnetic separator
Assignee: Metso Sweden AB
•
Filing: 1964-01-15
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Granted: 1966-04-19
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Expires: 1984-01-15
Abstract
No abstract record available.
Inventors
- 👤 Laurila Erkki Aukusti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:32
CPC Classifications
B; B03; B03C; B03C1/00; B03C1/02; B03C1/10; B03C1/14; B03C1/025; B03C1/031; B03C1/033; B03C1/0335
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A HIGH-INTENSITY MAGNETIC SEPARATOR FOR THE SEPARATION OF PULVERIZED ORES AND SIMILAR MATERIAL COMPRISING AN ELECTROMAGNET FORMING A MAGNETIC CIRCUIT HAVING A GAP BETWEEN OPPOSITE POLES AND A MAGNETIC FIELD IN SAID GAP, A STATIONARY BODY OF MAGNETIC MATERIAL AND A DRUM BOTH MOUNTED IN SAID GAP WITH THE BODY EXTENDING AXIALLY IN THE DRUM, SAID BODY HAVING A SUBSTANTIALLY CYLINDRICAL MAIN SHAPE AND RIDGE-LIKE PROJECTIONS EXTENDING HELICALLY AROUND ONLY A PART OF THE CIRCUMFERENCE THEREOF AND SAID DRUM BEING ROTATABLE IN THE GAP WITH ITS INNER CIRCUMFER-
Claim 2
Dependent Claim
88 words
A HIGH-INTENSITY MAGNETIC SEPARATOR FOR THE SEPARATION OF PULVERIZED ORES AND SIMILAR MATERIAL COMPRISING AN ELECTROMAGNET FORMING A MAGNETIC CIRCUIT HAVING A GAP BETWEEN OPPOSITE POLES AND A MAGNETIC FIELD IN SAID GAP, A STATIONARY BODY OF MAGNETIC MATERIAL AND A DRUM BOTH MOUNTED IN SAID GAP WITH THE BODY EXTENDING AXIALLY IN THE DRUM, SAID BODY HAVING A SUBSTANTIALLY CYLINDRICAL MAIN SHAPE AND RIDGE-LIKE PROJECTIONS EXTENDING HELICALLY AROUND ONLY A PART OF THE CIRCUMFERENCE THEREOF AND SAID DRUM BEING ROTATABLE IN THE GAP WITH ITS INNER CIRCUMFER-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |