Patent US3260938A successfully refreshed from Google Patents.
US3260938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transducer null balance potentiometer circuit having single energizing source and dual switch means for alternately connecting transducer and bridge outputs to servo-motor
Assignee: Individual
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Filing: 1961-11-09
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Granted: 1966-07-12
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Expires: 1981-11-09
Abstract
No abstract record available.
Inventors
- 👤 Alfred N Ormond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:08
CPC Classifications
G; G01; G01R; G01R17/00; G01R17/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
AN IMPROVED POTENTIOMETER CIRCUIT FOR INDICATING THE VALUE OF AN OUTPUT SIGNAL FROM A TRANSDUCER BY NULLING THE SAME IN A POTENTIOMETER BRIDGE, INCLUDING: A VARIABLE RESISTANCE IN SAID POTENTIOMETER BRIDGE; A SERVO-AMPLIFIER AND MOTOR SYSTEM CONNECTED TO OPERATE SAID VARIABLE RESISTANCE IN RESPONSE TO AN ERROR SIGNAL CONSTITUTING A FUNCTION OF THE DIFFERENCE BETWEEN SAID OUTPUT SIGNAL AND A KNOWN SIGNAL GENERATED IN SAID BRIDGE TO EFFECT NULLING OF SAID ERROR SIGNAL; A SINGLE D.-C. SOURCE FOR ENERGIZING SAID TRANSDUCER AND BRIDGE SO THAT SAID TRANSDUCER AND BRIDGE ARE ENERGIZED BY AN IDENTICAL QUANTITY WHEREBY SPURIOUS SIGNALS AS A CONSEQUENCE OF VARIATIONS IN THE POWER RESPECTIVELY SUPPLIED TO SAID TRANSDUCER AND BRIDGE ARE ELIMINATED; TWO PAIRS OF SIGNAL CONDUCTORS CONNECTED TO THE OUTPUTS OF SAID TRANSDUCER AND POTENTI-
Claim 2
Dependent Claim
129 words
AN IMPROVED POTENTIOMETER CIRCUIT FOR INDICATING THE VALUE OF AN OUTPUT SIGNAL FROM A TRANSDUCER BY NULLING THE SAME IN A POTENTIOMETER BRIDGE, INCLUDING: A VARIABLE RESISTANCE IN SAID POTENTIOMETER BRIDGE; A SERVO-AMPLIFIER AND MOTOR SYSTEM CONNECTED TO OPERATE SAID VARIABLE RESISTANCE IN RESPONSE TO AN ERROR SIGNAL CONSTITUTING A FUNCTION OF THE DIFFERENCE BETWEEN SAID OUTPUT SIGNAL AND A KNOWN SIGNAL GENERATED IN SAID BRIDGE TO EFFECT NULLING OF SAID ERROR SIGNAL; A SINGLE D.-C. SOURCE FOR ENERGIZING SAID TRANSDUCER AND BRIDGE SO THAT SAID TRANSDUCER AND BRIDGE ARE ENERGIZED BY AN IDENTICAL QUANTITY WHEREBY SPURIOUS SIGNALS AS A CONSEQUENCE OF VARIATIONS IN THE POWER RESPECTIVELY SUPPLIED TO SAID TRANSDUCER AND BRIDGE ARE ELIMINATED; TWO PAIRS OF SIGNAL CONDUCTORS CONNECTED TO THE OUTPUTS OF SAID TRANSDUCER AND POTENTI-
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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) | 1969-07-11 | 1970-01-10 | 1970-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-11 | 1974-01-10 | 1974-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-11 | 1978-01-10 | 1978-07-12 | $7700.00 | Window Closed / Lapsed |