US3197701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Zero suppressed frequency meter utilizing the discharge current of a capacitor
Assignee: P Gossen and Co GmbH
•
Filing: 1961-05-18
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Granted: 1965-07-27
•
Expires: 1981-05-18
Abstract
No abstract record available.
Inventors
- 👤 Sangl Michael
- 👤 Alber Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:01
CPC Classifications
G; G01; G01R; G01R23/00; G01R23/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A MOVABLE COIL, SUPPRESSED ZERO FREQUENCY METER, WHEREIN THE DISCHARGE OF A CAPACITOR THROUGH THE METER COIL IS RELATED TO THE FREQUENCY APPLIED THERETO, COMPRISING A CAPACITOR, A CHARGING RECTIFIER CONNECTED THERETO FOR CHARGING SAID CAPACITOR ONLY IN RESPONSE TO INPUT VOLTAGES OF A FIRST POLARITY, A METER COIL, A DISCHARGE RECTIFIER SERIES CONNECTED WITH SAID CAPACITOR TO APPLY DISCHARGE VOLTAGES OF SAID FIRST POLARITY TO SAID METER COIL, A THIRD RECTIFIER AND A RESISTOR CONNECTED BETWEEN ONE END OF SAID METER COIL AND SAID CAPACITOR FOR MAINTAINING AN OPPOSITE CURRENT FLOW TO SAID METER COIL AT A SUBSTANTIALLY CONSTANT VALUE WHEN SAID INPUT VOLTAGE IS AT THE OTHER POLARITY, AND A VOLTAGE STABILIZING BRANCH CONNECTED IN PARALLEL WITH SAID CAPACITOR AND CHARGING RECTIFIER, SAID BRANCH COMPRISING A PAIR OF OPPOSITELY POLED ZENER DIODES AND A LIMITING RESISTANCE SERIES CONNECTED THEREBETWEEN.
Claim 2
Dependent Claim
141 words
A MOVABLE COIL, SUPPRESSED ZERO FREQUENCY METER, WHEREIN THE DISCHARGE OF A CAPACITOR THROUGH THE METER COIL IS RELATED TO THE FREQUENCY APPLIED THERETO, COMPRISING A CAPACITOR, A CHARGING RECTIFIER CONNECTED THERETO FOR CHARGING SAID CAPACITOR ONLY IN RESPONSE TO INPUT VOLTAGES OF A FIRST POLARITY, A METER COIL, A DISCHARGE RECTIFIER SERIES CONNECTED WITH SAID CAPACITOR TO APPLY DISCHARGE VOLTAGES OF SAID FIRST POLARITY TO SAID METER COIL, A THIRD RECTIFIER AND A RESISTOR CONNECTED BETWEEN ONE END OF SAID METER COIL AND SAID CAPACITOR FOR MAINTAINING AN OPPOSITE CURRENT FLOW TO SAID METER COIL AT A SUBSTANTIALLY CONSTANT VALUE WHEN SAID INPUT VOLTAGE IS AT THE OTHER POLARITY, AND A VOLTAGE STABILIZING BRANCH CONNECTED IN PARALLEL WITH SAID CAPACITOR AND CHARGING RECTIFIER, SAID BRANCH COMPRISING A PAIR OF OPPOSITELY POLED ZENER DIODES AND A LIMITING RESISTANCE SERIES CONNECTED THEREBETWEEN.
References Cited (Backward Citations)
DE837887C
Cited
US2762974A
Cited
US2904690A
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US3004220A
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US2944215A
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US2947941A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |