US3239685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control circuit
Assignee: Bendix Corp
•
Filing: 1962-09-18
•
Granted: 1966-03-08
•
Expires: 1982-09-18
Abstract
No abstract record available.
Inventors
- 👤 Francis M Sano
- 👤 Parfomak Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:38
CPC Classifications
H; H03; H03D; H03D13/00; H03D13/007
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
A CIRCUIT FOR MEASURING THE PHASE DIFFERENCE BETWEEN TWO ALTERNATING SIGNALS OF THE SAME FREQUENCY, COMPRISING A TRANSFORMER HAVING A PRIMARY WINDING RECEIVING ONE ALTERNATING SIGNAL AND HAVING A SECONDARY WINDING, A TRANSISTOR HAVING INPUT AND COMMON ELECTRODES CONNECTED TO THE SECONDARY WINDING AND RENDERED CONDUCTING BY THE SIGNAL DURING PART OF EACH CYCLE AND HAVING AN OUTPUT ELECTRODE, A RECTIFYING BRIDGE HAVING A RECTIFIER IN EACH LEG AND TWO PAIRS OF OPPOSING TERMINALS AND CONNECTED WITH ONE PAIR OF OPPOSING TERMINALS TO THE OUTPUT AND COMMON ELECTRODES OF THE TRANSISTOR, A SECOND TRANSFORMER HAVING A PRIMARY WINDING RECEIVING THE OTHER SIGNAL AND HAVING A SECOND WINDING, AND AN OUTPUT LOAD CONNECTED IN SERIES WITH THE SECONDARY WINDING OF THE SECOND TRANSFORMER ACROSS THE OTHER PAIR OF OPPOSING TERMINALS OF THE RECTIFYING BRIDGE AND PROVIDING A VOLTAGE VARYING IN POLARITY AND AMPLITUDE IN ACCORDANCE WITH THE PHASE DIFFERENCE BETWEEN THE TWO SIGNALS.
Claim 2
Dependent Claim
152 words
A CIRCUIT FOR MEASURING THE PHASE DIFFERENCE BETWEEN TWO ALTERNATING SIGNALS OF THE SAME FREQUENCY, COMPRISING A TRANSFORMER HAVING A PRIMARY WINDING RECEIVING ONE ALTERNATING SIGNAL AND HAVING A SECONDARY WINDING, A TRANSISTOR HAVING INPUT AND COMMON ELECTRODES CONNECTED TO THE SECONDARY WINDING AND RENDERED CONDUCTING BY THE SIGNAL DURING PART OF EACH CYCLE AND HAVING AN OUTPUT ELECTRODE, A RECTIFYING BRIDGE HAVING A RECTIFIER IN EACH LEG AND TWO PAIRS OF OPPOSING TERMINALS AND CONNECTED WITH ONE PAIR OF OPPOSING TERMINALS TO THE OUTPUT AND COMMON ELECTRODES OF THE TRANSISTOR, A SECOND TRANSFORMER HAVING A PRIMARY WINDING RECEIVING THE OTHER SIGNAL AND HAVING A SECOND WINDING, AND AN OUTPUT LOAD CONNECTED IN SERIES WITH THE SECONDARY WINDING OF THE SECOND TRANSFORMER ACROSS THE OTHER PAIR OF OPPOSING TERMINALS OF THE RECTIFYING BRIDGE AND PROVIDING A VOLTAGE VARYING IN POLARITY AND AMPLITUDE IN ACCORDANCE WITH THE PHASE DIFFERENCE BETWEEN THE TWO SIGNALS.
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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) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |