Patent US2743059A successfully refreshed from Google Patents.
US2743059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of processing asbestos ore
Assignee: Kennedy Van Saun Manufacturing and Engineering Corp
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Filing: 1954-06-14
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Granted: 1956-04-24
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Expires: 1974-06-14
Abstract
No abstract record available.
Inventors
- 👤 Fred O Reedy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:56
CPC Classifications
B; B02; B02C; B02C21/00; B02C23/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
THE METHOD OF PRECESSING ASBESTOS ORE, COMPRISING CRUSHING THE ORE IN A CLOSED CIRCUIT TO A DESIRED SIZE, TUMBLING THE CRUSHED ASBESTOS ORE OF DESIRED SIZE IN AN AIR STREAM TO REMOVE ASBESTOS FIBER FROM SAID CRUSHED ASBESTOS ORE, TRANSPORTING THE ASBESTOS FIBER FROM THE TUMBLING ZONE BY THE AIR STREAM THROUGH A SEPARATING ZONE TO SEPARATE THE FIBER FROM THE ORE AND DUST PARTICLES SUSPENDED IN THE AIR STREAM, PASSING THE SEPARATED ASBESTOS FIBER THROUGH A SCREENING ZONE TO REMOVE ORE ADHERING TO THE FIBER, TRANSPORTING THE FIBER FROM THE SCREENING ZONE TO A SECOND FIBER SEPARATING ZONE, TRANSPORTING THE ASBESTOS FIBER FROM THE SECOND FIBER SEPARATING ZONE TO A GRADING ZONE TO SEPARATE THE LONG AND SHORT FIBER AND DEPOSIT THE SHORT FIBER IN STORAGE.
Claim 2
Independent Claim
127 words
THE METHOD OF PRECESSING ASBESTOS ORE, COMPRISING CRUSHING THE ORE IN A CLOSED CIRCUIT TO A DESIRED SIZE, TUMBLING THE CRUSHED ASBESTOS ORE OF DESIRED SIZE IN AN AIR STREAM TO REMOVE ASBESTOS FIBER FROM SAID CRUSHED ASBESTOS ORE, TRANSPORTING THE ASBESTOS FIBER FROM THE TUMBLING ZONE BY THE AIR STREAM THROUGH A SEPARATING ZONE TO SEPARATE THE FIBER FROM THE ORE AND DUST PARTICLES SUSPENDED IN THE AIR STREAM, PASSING THE SEPARATED ASBESTOS FIBER THROUGH A SCREENING ZONE TO REMOVE ORE ADHERING TO THE FIBER, TRANSPORTING THE FIBER FROM THE SCREENING ZONE TO A SECOND FIBER SEPARATING ZONE, TRANSPORTING THE ASBESTOS FIBER FROM THE SECOND FIBER SEPARATING ZONE TO A GRADING ZONE TO SEPARATE THE LONG AND SHORT FIBER AND DEPOSIT THE SHORT FIBER IN STORAGE.
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) | 1959-04-24 | 1959-10-24 | 1960-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-24 | 1963-10-24 | 1964-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-24 | 1967-10-24 | 1968-04-24 | $7700.00 | Window Closed / Lapsed |