US3178591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scanning apparatus employing filter capacitor havcing short charge-time and long, but with means to reduce, discharge-time
Assignee: Elsag Bailey Inc
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Filing: 1962-04-04
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Granted: 1965-04-13
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Expires: 1982-04-04
Abstract
No abstract record available.
Inventors
- 👤 John V Werme
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:13
CPC Classifications
G; G08; G08C; G08C15/00; G08C15/06; G08C15/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
SCANNING APPARATUS FOR ALTERNATING SIGNALS, THE COMBINATION COMPRISING, A RECTIFIER CIRCUIT RESPONSIVE TO A VARIABLE ALTERNATING SIGNAL TO ESTABLISHING A RECTIFIED D.C. SIGNAL, A FILTER CIRCUIT HAVING A SHORT CIRCUIT INCLUDING A LONG DISCHARGING TIME, SAID FILTER CIRCUIT INCLUDING A CAPACITOR CONNECTED TO THE OUTPUT OF SAID RECTIFIER CIRCUIT AND ADAPTED TO BE CHARGED TO A MAGNITUDE PROPORTIONAL TO THE MAGNITUDE OF THE ALTERNATING SIGNAL, MEANS OPERATIVE FOR REDUCING THE DISCHARGE TIME BY DISCHARGING SAID CAPACITOR TO GROUND, MEANS FOR NORMALLY RENDERING SAID DISCHARGING MEANS INOPERATIVE, PULSE GENERATING MEANS FOR PRODUCING PERIODIC SIGNAL PULSES AND MEANS RESPONSIVE TO SAID SIGNAL PULSES FOR RENDERING SAID DISCHARGING MEANS OPERATIVE.
Claim 2
Dependent Claim
107 words
SCANNING APPARATUS FOR ALTERNATING SIGNALS, THE COMBINATION COMPRISING, A RECTIFIER CIRCUIT RESPONSIVE TO A VARIABLE ALTERNATING SIGNAL TO ESTABLISHING A RECTIFIED D.C. SIGNAL, A FILTER CIRCUIT HAVING A SHORT CIRCUIT INCLUDING A LONG DISCHARGING TIME, SAID FILTER CIRCUIT INCLUDING A CAPACITOR CONNECTED TO THE OUTPUT OF SAID RECTIFIER CIRCUIT AND ADAPTED TO BE CHARGED TO A MAGNITUDE PROPORTIONAL TO THE MAGNITUDE OF THE ALTERNATING SIGNAL, MEANS OPERATIVE FOR REDUCING THE DISCHARGE TIME BY DISCHARGING SAID CAPACITOR TO GROUND, MEANS FOR NORMALLY RENDERING SAID DISCHARGING MEANS INOPERATIVE, PULSE GENERATING MEANS FOR PRODUCING PERIODIC SIGNAL PULSES AND MEANS RESPONSIVE TO SAID SIGNAL PULSES FOR RENDERING SAID DISCHARGING MEANS OPERATIVE.
References Cited (Backward Citations)
US2947881A
Cited
US3111654A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |