Patent US3278972A successfully refreshed from Google Patents.
US3278972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Xerographic plate cleaning apparatus
Assignee: Xerox Corp
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Filing: 1964-09-30
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Granted: 1966-10-18
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Expires: 1984-09-30
Abstract
No abstract record available.
Inventors
- 👤 Frederick W Hudson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:31
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/0005; G03G21/0035
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
IN A BRUSH CLEANING APPARATUS FOR REMOVING ELECTROSTATICALLY ADHERING PARTICLES FROM A XEROGRAPHIC PLATE WHEREIN A BRUSH IS ROTATABLY MOUNTED WITHIN A DUST HOOD IN A POSITION WHEREIN A PORTION OF THE BRUSH FIBERS PROJECT FROM AN INLET OPENING IN THE HOOD INTO CONTACT WITH THE SURFACE OF THE XEROGRAPHIC PLATE, THE DUST HOOD IS CONNECTED TO AN EXHAUST DUCT, REMOVED FROM THE INLET OPENING, THROUGH WHICH AIR IS DRAWN OUT OF THE DUST HOOD, AND A FLICKER BAR IS POSITIONED ADJACENT AN OPENING IN THE EXHAUST DUCT IN INTERFERENCE RELATION TO THE BRUSH FIBERS, THE IMPROVEMENT INCLUDING: MEANS DEFINING AN AIR KNIFE OPENING IN THE DUST HOOD REMOVED FROM THE INLET OPENING AND POSITIONED ADJACENT THE FLICKER BAR TO DIRECT AIR FLOWING INTO THE DUST HOOD, THROUGH SAID AIR KNIFE OPENING, OVER THE BUSH FIBERS IN A DIRECTION OPPOSITE TO THE ROTATION OF THE BRUSH FIBERS AS THEY CONTACT SAID FLICKER BAR.
Claim 2
Dependent Claim
153 words
IN A BRUSH CLEANING APPARATUS FOR REMOVING ELECTROSTATICALLY ADHERING PARTICLES FROM A XEROGRAPHIC PLATE WHEREIN A BRUSH IS ROTATABLY MOUNTED WITHIN A DUST HOOD IN A POSITION WHEREIN A PORTION OF THE BRUSH FIBERS PROJECT FROM AN INLET OPENING IN THE HOOD INTO CONTACT WITH THE SURFACE OF THE XEROGRAPHIC PLATE, THE DUST HOOD IS CONNECTED TO AN EXHAUST DUCT, REMOVED FROM THE INLET OPENING, THROUGH WHICH AIR IS DRAWN OUT OF THE DUST HOOD, AND A FLICKER BAR IS POSITIONED ADJACENT AN OPENING IN THE EXHAUST DUCT IN INTERFERENCE RELATION TO THE BRUSH FIBERS, THE IMPROVEMENT INCLUDING: MEANS DEFINING AN AIR KNIFE OPENING IN THE DUST HOOD REMOVED FROM THE INLET OPENING AND POSITIONED ADJACENT THE FLICKER BAR TO DIRECT AIR FLOWING INTO THE DUST HOOD, THROUGH SAID AIR KNIFE OPENING, OVER THE BUSH FIBERS IN A DIRECTION OPPOSITE TO THE ROTATION OF THE BRUSH FIBERS AS THEY CONTACT SAID FLICKER BAR.
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) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |