US3308948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High voltage separation of fine particles
Assignee: Individual
•
Filing: 1963-02-20
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Granted: 1967-03-14
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Expires: 1983-02-20
Abstract
No abstract record available.
Inventors
- 👤 Roger E Barthelemy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:14
CPC Classifications
B; B03; B03C; B03C7/00; B03C7/02; B03C7/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
IN A HIGH TENSION ROLL TYPE SEPARATOR COMPRISING A GROUNDED ROLL AND AN IONIZING ELECTRODE CHARGED TO A POTENTIAL OF AT LEAST 30 KILOVOLTS SPACED FROM THE UPPER FORWARD QUADRANT OF SAID ROLL, AN AUXILIARY STATIC ELECTRODE DISPOSED BELOW AND IN THE PATH OF PARTICLES THROWN FROM THE LOWER FORWARD QUADRANT OF THE ROLL, A CONDUCTIVE GROUNDED WALL EXTENDING FROM A FORWARD PORTION OF SAID ROLL AND DISPOSED BETWEEN AND SPACED FROM EACH OF SAID ELECTRODES, MEANS TO CHARGE SAID AUXILIARY ELECTRODE TO A POTENTIAL IN EXCESS OF SUBSTANTIALLY 60 KILOVOLTS THE SAME SIGN AS SAID IONIZING ELECTRODE, AND MEANS FOR
Claim 2
Dependent Claim
101 words
IN A HIGH TENSION ROLL TYPE SEPARATOR COMPRISING A GROUNDED ROLL AND AN IONIZING ELECTRODE CHARGED TO A POTENTIAL OF AT LEAST 30 KILOVOLTS SPACED FROM THE UPPER FORWARD QUADRANT OF SAID ROLL, AN AUXILIARY STATIC ELECTRODE DISPOSED BELOW AND IN THE PATH OF PARTICLES THROWN FROM THE LOWER FORWARD QUADRANT OF THE ROLL, A CONDUCTIVE GROUNDED WALL EXTENDING FROM A FORWARD PORTION OF SAID ROLL AND DISPOSED BETWEEN AND SPACED FROM EACH OF SAID ELECTRODES, MEANS TO CHARGE SAID AUXILIARY ELECTRODE TO A POTENTIAL IN EXCESS OF SUBSTANTIALLY 60 KILOVOLTS THE SAME SIGN AS SAID IONIZING ELECTRODE, AND MEANS FOR
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) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |