US3109140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speed measuring device using a servo controlled bridge
Assignee: General Electric Co
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Filing: 1960-12-23
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Granted: 1963-10-29
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Expires: 1980-12-23
Abstract
No abstract record available.
Inventors
- 👤 Bock M Chin
- 👤 Vincent A Orlando
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:19
CPC Classifications
G; G01; G01P; G01P3/00; G01P3/42; G01P3/44; G01P3/48; G01P3/4802
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
FREQUENCY TRANSLATING APPARATUS COMPRISING AN OUTPUT DEVICE, A SERVOMOTOR CONNECTED TO POSITION SAID OUTPUT DEVICE, AND FREQUENCY RESPONSIVE MEANS FOR CONTROLLING SAID SERVOMOTOR COMPRISING A BRIDGE NETWORK HAVING TWO PARALLEL BRANCHES, MEANS SUPPLYING A UNIDIRECTIONAL VOLTAGE ACROSS SAID BRANCHES, THE FIRST OF SAID BRANCHES INCLUDING A SERIALLY CONNECTED CAPACITOR AND AN IMPEDANCE, AND THE SECOND OF SAID BRANCHES INCLUDING A VOLTAGE DIVIDER HAVING AN ADJUSTABLE PORTION POSITIONED BY SAID SERVOMOTOR FOR DERIVING AN ERROR VOLTAGE FROM SAID NETWORK VARIABLE IN ACCORDANCE WITH THE DIFFERENCE IN VOLTAGE ACROSS SAID IMPEDANCE AND THAT ACROSS SAID ADJUSTABLE PORTION OF SAID VOLTAGE DIVIDER, MEANS ENERGIZING SAID SERVOMOTOR TO ROTATE IN A DIRECTION DEPENDENT ON THE POLARITY OF SAID ERROR VOLTAGE, A DISCHARGE CIRCUIT ARRANGED
Claim 2
Dependent Claim
120 words
FREQUENCY TRANSLATING APPARATUS COMPRISING AN OUTPUT DEVICE, A SERVOMOTOR CONNECTED TO POSITION SAID OUTPUT DEVICE, AND FREQUENCY RESPONSIVE MEANS FOR CONTROLLING SAID SERVOMOTOR COMPRISING A BRIDGE NETWORK HAVING TWO PARALLEL BRANCHES, MEANS SUPPLYING A UNIDIRECTIONAL VOLTAGE ACROSS SAID BRANCHES, THE FIRST OF SAID BRANCHES INCLUDING A SERIALLY CONNECTED CAPACITOR AND AN IMPEDANCE, AND THE SECOND OF SAID BRANCHES INCLUDING A VOLTAGE DIVIDER HAVING AN ADJUSTABLE PORTION POSITIONED BY SAID SERVOMOTOR FOR DERIVING AN ERROR VOLTAGE FROM SAID NETWORK VARIABLE IN ACCORDANCE WITH THE DIFFERENCE IN VOLTAGE ACROSS SAID IMPEDANCE AND THAT ACROSS SAID ADJUSTABLE PORTION OF SAID VOLTAGE DIVIDER, MEANS ENERGIZING SAID SERVOMOTOR TO ROTATE IN A DIRECTION DEPENDENT ON THE POLARITY OF SAID ERROR VOLTAGE, A DISCHARGE CIRCUIT ARRANGED
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) | 1966-10-28 | 1967-04-29 | 1967-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-28 | 1971-04-29 | 1971-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-28 | 1975-04-29 | 1975-10-29 | $7700.00 | Window Closed / Lapsed |