US3135832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Current transformer coupling means for time sequential switching of low level signals
Assignee: Electro Mechanical Research Inc
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Filing: 1960-12-20
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Granted: 1964-06-02
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Expires: 1980-12-20
Abstract
No abstract record available.
Inventors
- 👤 Sherwin K Feingold
- 👤 Jean P Magnin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:13
CPC Classifications
G; G08; G08C; G08C15/00; G08C15/06; G08C15/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A SYSTEM FOR COUPLING A PLURALITY OF SIGNAL SOURCES TO A COMMON NETWORK COMPRISING IN COMBINATION, A PLURALITY OF RELATIVELY HIGH IMPEDANCE MEANS, A CURRENT TRANSFORMER HAVING A PLURALITY OF PRIMARY WINDINGS AND A SECONDARY WINDING, A PLURALITY OF SWITCHING MEANS; MEANS FOR CONNECTING EACH OF SAID SIGNAL SOURCES, EACH OF SAID IMPEDANCE MEANS, EACH OF SAID SWITCHING MEANS AND EACH OF SAID PRIMARY WINDINGS IN RESPECTIVE SERIES CIRCUITS; MEANS FOR CONNECTING SAID SECONDARY WINDING TO SAID NETWORK, AND MEANS FOR SUCCESSIVELY CLOSING EACH OF SAID SWITCHING MEANS DURING A RELATIVELY SHORT TIME INTERVAL TO PRODUCE IN SAID SECONDARY WINDING A TRAIN OF TIME-MULTIPLEXED PULSES.
Claim 2
Independent Claim
105 words
A SYSTEM FOR COUPLING A PLURALITY OF SIGNAL SOURCES TO A COMMON NETWORK COMPRISING IN COMBINATION, A PLURALITY OF RELATIVELY HIGH IMPEDANCE MEANS, A CURRENT TRANSFORMER HAVING A PLURALITY OF PRIMARY WINDINGS AND A SECONDARY WINDING, A PLURALITY OF SWITCHING MEANS; MEANS FOR CONNECTING EACH OF SAID SIGNAL SOURCES, EACH OF SAID IMPEDANCE MEANS, EACH OF SAID SWITCHING MEANS AND EACH OF SAID PRIMARY WINDINGS IN RESPECTIVE SERIES CIRCUITS; MEANS FOR CONNECTING SAID SECONDARY WINDING TO SAID NETWORK, AND MEANS FOR SUCCESSIVELY CLOSING EACH OF SAID SWITCHING MEANS DURING A RELATIVELY SHORT TIME INTERVAL TO PRODUCE IN SAID SECONDARY WINDING A TRAIN OF TIME-MULTIPLEXED PULSES.
References Cited (Backward Citations)
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US1956397A
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US2744247A
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US2772370A
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US2975234A
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US2868881A
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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 |