Patent US2748018A successfully refreshed from Google Patents.
US2748018A
Expired / Lapsed
US
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Apparatus and method of electrostatic powdering
Assignee: Ransburg Corp
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Filing: 1953-06-05
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Granted: 1956-05-29
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Expires: 1973-06-05
Abstract
No abstract record available.
Inventors
- 👤 Emery P Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:41
CPC Classifications
B; B05; B05B; B05B5/00; B05B5/025; B05B5/057; B05B5/08; B05B5/14
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
103 words
A METHOD OF APPLYING POWDER TO A SURFACE OF AN EXTENDED SHEET COMPRISING MOVING SAID SHEET ALONG A SUBSTANTIALLY VERTICAL PATH, ESTABLISHING AN ELECTROSTATIC FIELD OVER THE SURFACE OF SAID SHEET, SAID FIELD HAVING AN EXTENDED IONIZING ZONE REMOTE FROM BUT COEXTENSIVE WITH THE SURFACE, SUPPLYING POWDER TO A REGION ADJACENT SAID IONIZING ZONE, VIBRATING THE POWDER TO MOVE IT AT A CONTROLLED RATE INTO THE IONIZING ZONE OF SAID ELECTROSTATIC FIELD, AND ELECTROSTATICALLY MOVING THE POWDER FROM SAID ZONE THROUGH SAID FIELD AND DEPOSITING THE POWDER ON THE SURFACE OF SAID SHEET, SAID FIELD CONSTITUTING THE SOLE FORCE FOR DEPOSITING THE POWDER.
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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) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |