US3233587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrophotographic brush assembly
Assignee: Bell and Howell Co
•
Filing: 1962-10-09
•
Granted: 1966-02-08
•
Expires: 1982-10-09
Abstract
No abstract record available.
Inventors
- 👤 Robert B Morton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:23
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03G15/09; G03G15/0921
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
108 words
A XEROGRAPHIC DEVELOPING ASSEMBLY COMPRISING A POWDER HOLDER, A MIXTURE OF TONER PARTICLES AND FERROMAGNETIC CARRIER PARTICLES IN SAID HOLDER, AND A ROTATABLE BRUSH ASSEMBLY SUPPORTED WITH A PORTION OF ITS PERIPHERY IMMERSED IN SAID MIXTURE, SAID BRUSH ASSEMBLY COMPRISING A NON-MAGNETIC CYLINDER AND A CONTINUOUS HELICALLY WOUND PERMANENT MAGNET WIRE ON THE PERIPHERY OF SAID CYLINDER TO PICK UP DEVELOPER MIXTURES AT ITS PERIPHERY IN THE FORM OF RADIALLY EXTENDING BRISTLES, SAID WIRE BEING SHAPED AND DISPOSED TO FORM AN AXIAL ROW OF CIRCUMFERENTIALLY EXTENDING CONVOLUTIONS EXTENDING THROUGH 360* OF ARC, AND FASTENING MEANS CONNECTING THE RESPECTIVE ENDS OF SAID WIRE ADJACENT RESPECTIVE ENDS OF SAID CYLINDER.
References Cited (Backward Citations)
US368804A
Cited
US1338133A
Cited
GB404894A
Cited
US2118179A
Cited
GB558396A
Cited
US2598760A
Cited
US2982888A
Cited
US3133015A
Cited
US3060353A
Cited
US3098765A
Cited
US3081737A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |