US3145122A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for applying developer powder to photo-conductive insulating material
Assignee: AB Dick Co
•
Filing: 1962-08-13
•
Granted: 1964-08-18
•
Expires: 1982-08-13
Abstract
No abstract record available.
Inventors
- 👤 Sr Paul B Streich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:54
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03G15/09; Y; Y10; Y10S; Y10S101/00; Y10S101/37
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
APPARATUS FOR DEVELOPING ELECATROSTATICALLY CHARGED LATENT IMAGES ON PHOTO-CONDUCTIVE INSULATING MATERIAL, COMPRISING AN OPEN TOP TROUGH CONTAINING DEVELOPER POWDER, APPLICATOR ROLLER MEANS MOUNTED FRO ROTATION IN SAID TROUGH FOR FEEDING THE DEVELOPER POWDER TO THE OPEN TOP PORTION OF SAID TROUGH, A FLEXIBLE SEALING COVER EXTENDING ACROSS THE OPEN TOP OF THE TROUGH AND THUS MINIMIZE ESCAPE OF DEVELOPER POWDER FROM SAID TROUGH, SAID SEALING COVER BEING OF A MATERIAL IN THE TRIBOELECTRIC SERIES CARRYING THE SAME CHARGE AS IS CARRIED BY THE DEVELOPER POWDER TO REPEL THE DEVELOPER POWDER AND THUS MINIMIZE DEPOSI-
Claim 2
Dependent Claim
94 words
APPARATUS FOR DEVELOPING ELECATROSTATICALLY CHARGED LATENT IMAGES ON PHOTO-CONDUCTIVE INSULATING MATERIAL, COMPRISING AN OPEN TOP TROUGH CONTAINING DEVELOPER POWDER, APPLICATOR ROLLER MEANS MOUNTED FRO ROTATION IN SAID TROUGH FOR FEEDING THE DEVELOPER POWDER TO THE OPEN TOP PORTION OF SAID TROUGH, A FLEXIBLE SEALING COVER EXTENDING ACROSS THE OPEN TOP OF THE TROUGH AND THUS MINIMIZE ESCAPE OF DEVELOPER POWDER FROM SAID TROUGH, SAID SEALING COVER BEING OF A MATERIAL IN THE TRIBOELECTRIC SERIES CARRYING THE SAME CHARGE AS IS CARRIED BY THE DEVELOPER POWDER TO REPEL THE DEVELOPER POWDER AND THUS MINIMIZE DEPOSI-
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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) | 1967-08-18 | 1968-02-17 | 1968-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-18 | 1972-02-17 | 1972-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-18 | 1976-02-17 | 1976-08-18 | $7700.00 | Window Closed / Lapsed |