US2786441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for applying electrostatic developer powder by means of a magnetic brush
Assignee: RCA Corp
•
Filing: 1953-07-20
•
Granted: 1957-03-26
•
Expires: 1973-07-20
Abstract
No abstract record available.
Inventors
- 👤 Charles J Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:14
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03G15/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
ELECTROSTATIC PRINTING APPARATUE COMPRISING MEANS FOR MOVING A PHOTOCONDUCTIVE WEB HAVING A LATENT CHARGE IMAGE IMPOSED THEREON ALONG A PREDETERMINED PATH, AN ENDLESS BELT, MEANS FOR SUPPORTING AND DRIVING SAID BELT WHEREBY ONERUN THEREOF TRAVERSES ALONG A PATH AT RIGHT ANGLES TO THE PATH OF SAID WEB AND WITH ONE RUN OF SAID BELT IN CLOSE PROXIMITY TO THE CHARGED SURFACE OF SAID WEB, A MAGNET STRUCTURE FOR PRODUCING A MAGNETIC FLUX THROUGHOUT THE WIDTH OF SAID WEB AND LENGTHWISE OF SAID BELT, ONE RUN OF SAID BELT BEING WITHIN SAID MAGNETIC FLUX AND THE REMAINING RUN BEING OUTSIDE OF SAID MAGNETIC
Claim 2
Dependent Claim
102 words
ELECTROSTATIC PRINTING APPARATUE COMPRISING MEANS FOR MOVING A PHOTOCONDUCTIVE WEB HAVING A LATENT CHARGE IMAGE IMPOSED THEREON ALONG A PREDETERMINED PATH, AN ENDLESS BELT, MEANS FOR SUPPORTING AND DRIVING SAID BELT WHEREBY ONERUN THEREOF TRAVERSES ALONG A PATH AT RIGHT ANGLES TO THE PATH OF SAID WEB AND WITH ONE RUN OF SAID BELT IN CLOSE PROXIMITY TO THE CHARGED SURFACE OF SAID WEB, A MAGNET STRUCTURE FOR PRODUCING A MAGNETIC FLUX THROUGHOUT THE WIDTH OF SAID WEB AND LENGTHWISE OF SAID BELT, ONE RUN OF SAID BELT BEING WITHIN SAID MAGNETIC FLUX AND THE REMAINING RUN BEING OUTSIDE OF SAID MAGNETIC
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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) | 1960-03-25 | 1960-09-24 | 1961-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-25 | 1964-09-24 | 1965-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-25 | 1968-09-24 | 1969-03-26 | $7700.00 | Window Closed / Lapsed |