Patent US3247960A successfully refreshed from Google Patents.
US3247960A
Expired / Lapsed
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Electrostatic conditioning electrode separator
Assignee: General Mills Inc
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Filing: 1962-06-21
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Granted: 1966-04-26
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Expires: 1982-06-21
Abstract
No abstract record available.
Inventors
- 👤 William A Brastad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:55
CPC Classifications
B; B03; B03C; B03C7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
AN ELECTROSTATIC SEPARATOR COMPRISING A SUPPORT ALONG WHICH A MIXTURE OF CONDUCTIVE AND NON-CONDUCTIVE PARTICLES CAN MOVE ALONG A GIVEN PATH, MEANS FOR MOVING SAID PARTICLES ALONG SAID PATH, SAID SUPPORT MEANS CAUSING SAID NON-CONDUCTIVE PARTICLES TO ACQUIRE BY FRICTIONAL ELECTRIFICATION A CHARGE OF A PREDETERMINED POLARITY AS SAID PARTICLES MOVE ALONG SAID PATH, A NON-IONIZING CONDITIONING ELECTRODE POSITIONED ALONG SAID PATH FOR INDUCTIVELY CHARGING SAID NON-CONDUCTIVE PARTICLES AS SAID PARTICLES MOVE ALONG SAID PATH, MEANS FOR ESTABLISHING A FIRST ELECTROSTATIC FIELD BETWEEN SAID SUPPORT AND SAID CONDITIONING ELECTRODE WITH THE POLARITY OF THE CONDITION-
Claim 2
Dependent Claim
95 words
AN ELECTROSTATIC SEPARATOR COMPRISING A SUPPORT ALONG WHICH A MIXTURE OF CONDUCTIVE AND NON-CONDUCTIVE PARTICLES CAN MOVE ALONG A GIVEN PATH, MEANS FOR MOVING SAID PARTICLES ALONG SAID PATH, SAID SUPPORT MEANS CAUSING SAID NON-CONDUCTIVE PARTICLES TO ACQUIRE BY FRICTIONAL ELECTRIFICATION A CHARGE OF A PREDETERMINED POLARITY AS SAID PARTICLES MOVE ALONG SAID PATH, A NON-IONIZING CONDITIONING ELECTRODE POSITIONED ALONG SAID PATH FOR INDUCTIVELY CHARGING SAID NON-CONDUCTIVE PARTICLES AS SAID PARTICLES MOVE ALONG SAID PATH, MEANS FOR ESTABLISHING A FIRST ELECTROSTATIC FIELD BETWEEN SAID SUPPORT AND SAID CONDITIONING ELECTRODE WITH THE POLARITY OF THE CONDITION-
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) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |