US3275837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Xerographic charging apparatus
Assignee: Xerox Corp
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Filing: 1963-01-04
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Granted: 1966-09-27
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Expires: 1983-01-04
Abstract
No abstract record available.
Inventors
- 👤 Joseph J Codichini
- 👤 Rolf W Eichler
- 👤 Thomas F Hayne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:01
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/80; G03G15/02; G03G15/0283; G05; G05F; G05F3/00; G05F3/02; G05F3/04; G05F3/06; H; H01; H01F; H01F38/00; H01F38/02; H01F38/06; H05; H05F; H05F3/00; H05F3/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
214 words
A HIGH VOLTAGE POWER SUPPLY CIRCUIT TO PROVIDE A POSITIVE BIASED A.C. VOLTAGE BETWEEN A FIRST OUTPUT TERMINAL AND A THIRD OUTPUT TERMINAL AND A NEGATIVE BIASED D.C. VOLTAGE BETWEEN A SECOND OUTPUT TERMINAL AND SAID THIRD OUTPUT TERMINAL, SAID POWER SUPPLY CIRCUIT INCLUDING A STABLIZED TRANSFORMER HAVING PRIMARY INPUT TERMINALS ADAPTED TO BE CONNECTED TO A SOURCE OF A.C. POTENTIAL, AND A SECONDARY HAVING MULTIPLE TAPS; A FIRST CAPACITOR CONNECTED FROM A FIRST TAP OF SAID SECONDARY TO SAID FIRST OUTPUT TERMINAL, A FIRST RECTIFIER HAVING ITS ANODE CONNECTED TO A THIRD TAP OF SAID SECONDARY AND ITS CATHODE CONNECTED BETWEEN SAID FIRST CAPACITOR AND SAID FIRST OUTPUT TERMINAL, A SECOND CAPACITOR CONNECTED BETWEEN A SECOND TAP OF SAID SECONDARY AND SAID SECOND OUTPUT TERMINAL, A SECOND RECTIFIER HAVING ITS CATHODE CONNECTED TO A FOURTH TAP OF SAID SECONDARY AND ITS ANODE CONNECTED BETWEEN SAID SECOND CAPACITOR AND SAID SECOND OUTPUT TERMINAL, AND SAID THIRD OUTPUT TERMINAL BEING CONNECTED TO A FIFTH TAP OF SAID SECONDARY, WHEREBY THE POSITIVE PEAK VOLTAGE APPLIED TO SAID FIRST OUTPUT TERMINAL IS GREATER THAN THE NEGATIVE PEAK VOLTAGE APPLIED TO SAID FIRST OUTLET TERMINAL AND WHEREBY SAID NEGATIVE PEAK VOLTAGE APPLIED TO SAID SECOND TERMINAL IS GREATER THAN THE POSITIVE VOLTAGE APPLIED TO SAID SECOND OUTPUT TERMINAL.
Claim 2
Dependent Claim
214 words
A HIGH VOLTAGE POWER SUPPLY CIRCUIT TO PROVIDE A POSITIVE BIASED A.C. VOLTAGE BETWEEN A FIRST OUTPUT TERMINAL AND A THIRD OUTPUT TERMINAL AND A NEGATIVE BIASED D.C. VOLTAGE BETWEEN A SECOND OUTPUT TERMINAL AND SAID THIRD OUTPUT TERMINAL, SAID POWER SUPPLY CIRCUIT INCLUDING A STABLIZED TRANSFORMER HAVING PRIMARY INPUT TERMINALS ADAPTED TO BE CONNECTED TO A SOURCE OF A.C. POTENTIAL, AND A SECONDARY HAVING MULTIPLE TAPS; A FIRST CAPACITOR CONNECTED FROM A FIRST TAP OF SAID SECONDARY TO SAID FIRST OUTPUT TERMINAL, A FIRST RECTIFIER HAVING ITS ANODE CONNECTED TO A THIRD TAP OF SAID SECONDARY AND ITS CATHODE CONNECTED BETWEEN SAID FIRST CAPACITOR AND SAID FIRST OUTPUT TERMINAL, A SECOND CAPACITOR CONNECTED BETWEEN A SECOND TAP OF SAID SECONDARY AND SAID SECOND OUTPUT TERMINAL, A SECOND RECTIFIER HAVING ITS CATHODE CONNECTED TO A FOURTH TAP OF SAID SECONDARY AND ITS ANODE CONNECTED BETWEEN SAID SECOND CAPACITOR AND SAID SECOND OUTPUT TERMINAL, AND SAID THIRD OUTPUT TERMINAL BEING CONNECTED TO A FIFTH TAP OF SAID SECONDARY, WHEREBY THE POSITIVE PEAK VOLTAGE APPLIED TO SAID FIRST OUTPUT TERMINAL IS GREATER THAN THE NEGATIVE PEAK VOLTAGE APPLIED TO SAID FIRST OUTLET TERMINAL AND WHEREBY SAID NEGATIVE PEAK VOLTAGE APPLIED TO SAID SECOND TERMINAL IS GREATER THAN THE POSITIVE VOLTAGE APPLIED TO SAID SECOND OUTPUT TERMINAL.
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) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |