US3207129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copying device
Assignee: Individual
•
Filing: 1962-04-17
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Granted: 1965-09-21
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Expires: 1982-04-17
Abstract
No abstract record available.
Inventors
- 👤 Limberger Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:20
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03G15/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
APPARATUS FOR THE DEVELOPMENT OF A LATENT ELECTROSTATIC IMAGE ON A SHEET PROVIDED WITH A XEROGRAPHIC LAYER, COMPRISING GUIDE MEANS FORMING A SUBSTANTIALLY HORIZONTAL TRANSPORT PATH; FEED MEANS FOR DISPLACING SAID SHEET ALONG SAID PATH; DISTRIBUTING MEANS INCLUDING ENDLESS CONVEYOR MEANS CARRYING AN ARRAY OF PERMANENT MAGNETS SPACEDLY POSITIONED ABOVE SAID PATH WHILE EXTENDING SUBSTNAITLALY HORIZONTALLY THEREACROSS; SUPPLY MEANS POSITIONED LATERALLY BEOND SAID PATH FOR DELIVERING MAGNETIC TONER PARTICLES TO SAID ARRAY; ACTUATING MEANS FOR DISPLACING SAID CONVEYOR MEANS IN A SUBSTANTIALLY HORIZONTAL PLANE ACROSS SAID PATH TRANSVERSELY TO THE DIRECTION OF DISPLACEMENT OF SAID SHEET IN A MANNER CAUSING MAGNETICALLY COHERENT TUFTS OF SAID PARTICLES TO SWEEP THE SURFACE OF SAIDSHEET, AND AT LEAST ONE FURTHER MAGNET FIXEDLY PLY MEANS FOR ORIENTING SAID TUFTS OF PARTICLES IN A DIRECTION SUBSTANTIALLY PERPENDICULAR TO THE MOTION OF SAID PERMANENT MAGNETS.
Claim 2
Dependent Claim
139 words
APPARATUS FOR THE DEVELOPMENT OF A LATENT ELECTROSTATIC IMAGE ON A SHEET PROVIDED WITH A XEROGRAPHIC LAYER, COMPRISING GUIDE MEANS FORMING A SUBSTANTIALLY HORIZONTAL TRANSPORT PATH; FEED MEANS FOR DISPLACING SAID SHEET ALONG SAID PATH; DISTRIBUTING MEANS INCLUDING ENDLESS CONVEYOR MEANS CARRYING AN ARRAY OF PERMANENT MAGNETS SPACEDLY POSITIONED ABOVE SAID PATH WHILE EXTENDING SUBSTNAITLALY HORIZONTALLY THEREACROSS; SUPPLY MEANS POSITIONED LATERALLY BEOND SAID PATH FOR DELIVERING MAGNETIC TONER PARTICLES TO SAID ARRAY; ACTUATING MEANS FOR DISPLACING SAID CONVEYOR MEANS IN A SUBSTANTIALLY HORIZONTAL PLANE ACROSS SAID PATH TRANSVERSELY TO THE DIRECTION OF DISPLACEMENT OF SAID SHEET IN A MANNER CAUSING MAGNETICALLY COHERENT TUFTS OF SAID PARTICLES TO SWEEP THE SURFACE OF SAIDSHEET, AND AT LEAST ONE FURTHER MAGNET FIXEDLY PLY MEANS FOR ORIENTING SAID TUFTS OF PARTICLES IN A DIRECTION SUBSTANTIALLY PERPENDICULAR TO THE MOTION OF SAID PERMANENT MAGNETS.
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) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |