US3135873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sequential measuring system
Assignee: Elsag Bailey Inc
•
Filing: 1959-05-14
•
Granted: 1964-06-02
•
Expires: 1979-05-14
Abstract
No abstract record available.
Inventors
- 👤 John V Werme
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:23
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/74; G; G08; G08C; G08C15/00; G08C15/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
IN A MEASURING APPARATUS, THE COMBINATION COMPRISING, A DIRECT VOLTAGE AMPLIFIER HAVING AN INPUT AND OUTPUT TERMINAL, SAID AMPLIFIER HAVING AN EXTERNAL FEEDBACK CIRCUIT, AN INPUT CIRCUIT CONNECTED TO SAID AMPLIFIER INPUT AND INCLUDING AN INPUT TERMINAL FOR A DIRECT VOLTAGE INPUT SIGNAL VARIABLE IN A PREDETERMINED RANGE, A RECTIFIER ELEMENT ELECTRICALLY CONNECTED BETWEEN SAID INPUT CIRCUIT AND THE INPUT OF SAID DIRECT VOLTAGE AMPLIFIER, SAID RECTIFIER ELEMENT HAVING A POLARITY ARRANGEMENT TO BE FORWARD BIASED BY SAID INPUT SIGNAL TO CONDUCT THE SAME, MEANS FOR ESTABLISHING A BIASING POTENTIAL OPPOSITE IN POLARITY BETWEEN SAID RECTIFIER ELEMENT AND SAID DIRECT VOLTAGE AMPLIFIER TO INSURE FORWARD BIASING OF SAID RECTIFIER ELEMENT AT THE MINIMUM VALUE OF SAID INPUT SIGNAL, AND MEANS FOR ESTABLISHING A POTENTIAL IN SAID FEEDBACK CIRCUIT TO COMPENSATE FOR THE EFFECT OF SAID BIASING POTENTIAL ON SAID DIRECT VOLTAGE AMPLIFIER.
Claim 2
Dependent Claim
142 words
IN A MEASURING APPARATUS, THE COMBINATION COMPRISING, A DIRECT VOLTAGE AMPLIFIER HAVING AN INPUT AND OUTPUT TERMINAL, SAID AMPLIFIER HAVING AN EXTERNAL FEEDBACK CIRCUIT, AN INPUT CIRCUIT CONNECTED TO SAID AMPLIFIER INPUT AND INCLUDING AN INPUT TERMINAL FOR A DIRECT VOLTAGE INPUT SIGNAL VARIABLE IN A PREDETERMINED RANGE, A RECTIFIER ELEMENT ELECTRICALLY CONNECTED BETWEEN SAID INPUT CIRCUIT AND THE INPUT OF SAID DIRECT VOLTAGE AMPLIFIER, SAID RECTIFIER ELEMENT HAVING A POLARITY ARRANGEMENT TO BE FORWARD BIASED BY SAID INPUT SIGNAL TO CONDUCT THE SAME, MEANS FOR ESTABLISHING A BIASING POTENTIAL OPPOSITE IN POLARITY BETWEEN SAID RECTIFIER ELEMENT AND SAID DIRECT VOLTAGE AMPLIFIER TO INSURE FORWARD BIASING OF SAID RECTIFIER ELEMENT AT THE MINIMUM VALUE OF SAID INPUT SIGNAL, AND MEANS FOR ESTABLISHING A POTENTIAL IN SAID FEEDBACK CIRCUIT TO COMPENSATE FOR THE EFFECT OF SAID BIASING POTENTIAL ON SAID DIRECT VOLTAGE AMPLIFIER.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-02 | 1967-12-02 | 1968-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-02 | 1971-12-02 | 1972-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-02 | 1975-12-02 | 1976-06-02 | $7700.00 | Window Closed / Lapsed |