Patent US3324291A successfully refreshed from Google Patents.
US3324291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corona generating device with means to cause air flow therethrough to maintain the parts free of dust accumulation
Assignee: Xerox Corp
•
Filing: 1964-07-06
•
Granted: 1967-06-06
•
Expires: 1984-07-06
Abstract
No abstract record available.
Inventors
- 👤 Frederick W Hudson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:33
CPC Classifications
H; H05; H05F; H05F3/00; H05F3/04; G; G03; G03G; G03G15/00; G03G15/02; G03G15/0258; G03G15/0291
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A CORONA GENERATING DEVICE FOR THE EMISSION OF CORONA DISCHARGE COMPRISING IN COMBINATION: (A) A FRAME INCLUDING AT LEAST A PAIR OF ELECTRICALLY INSULATING WALLS SECURED TOGETHER IN SPACED APART RELATION; (B) A CORONA DISCHARGE ELECTRODE EXTENDING GENERALLY LENGTHWISE BETWEEN THE WALLS OF SAID FRAME; (C) MEANS FOR CONNECTING SAID ELECTRODE TO A SOURCE OF CORONA GENERATING POTENTIAL; (D) MEANS DEFINING A REFERENCE FIELD SPACED FROM SAID ELECTRODE FOR EFFECTING DIRECTIONAL FLOW OF CORONA DISCHARGE GENERALLY TOWARDS SAID FIELD TO EXTERIOR OF SAID FRAME WHEREBY A VACUUM IS INDUCED BY SAID DISCHARGE WITHIN SAID FRAME IN THE VICINITY OF SAID ELECTRODE; AND, (E) MEANS DEFINING AN AIR ENTRANCE OPENING IN SAID FRAME GENERALLY OPPOSITE SAID ELECTRODE FROM SAID FIELD DEFINING MEANS AND COMMUNICATING WITH THE VACUUM AREA THEREOF WHEREBY A CONTINUOUS QUANTITY
Claim 2
Dependent Claim
132 words
A CORONA GENERATING DEVICE FOR THE EMISSION OF CORONA DISCHARGE COMPRISING IN COMBINATION: (A) A FRAME INCLUDING AT LEAST A PAIR OF ELECTRICALLY INSULATING WALLS SECURED TOGETHER IN SPACED APART RELATION; (B) A CORONA DISCHARGE ELECTRODE EXTENDING GENERALLY LENGTHWISE BETWEEN THE WALLS OF SAID FRAME; (C) MEANS FOR CONNECTING SAID ELECTRODE TO A SOURCE OF CORONA GENERATING POTENTIAL; (D) MEANS DEFINING A REFERENCE FIELD SPACED FROM SAID ELECTRODE FOR EFFECTING DIRECTIONAL FLOW OF CORONA DISCHARGE GENERALLY TOWARDS SAID FIELD TO EXTERIOR OF SAID FRAME WHEREBY A VACUUM IS INDUCED BY SAID DISCHARGE WITHIN SAID FRAME IN THE VICINITY OF SAID ELECTRODE; AND, (E) MEANS DEFINING AN AIR ENTRANCE OPENING IN SAID FRAME GENERALLY OPPOSITE SAID ELECTRODE FROM SAID FIELD DEFINING MEANS AND COMMUNICATING WITH THE VACUUM AREA THEREOF WHEREBY A CONTINUOUS QUANTITY
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) | 1970-06-05 | 1970-12-05 | 1971-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-05 | 1974-12-05 | 1975-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-05 | 1978-12-05 | 1979-06-06 | $7700.00 | Window Closed / Lapsed |