US3302175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Attenuation network for carrier-current telecommunication systems
Assignee: Individual
•
Filing: 1962-06-29
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Granted: 1967-01-31
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Expires: 1982-06-29
Abstract
No abstract record available.
Inventors
- 👤 Deracinois Albert
- 👤 Lassaigne Henri Franco Germain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:30
CPC Classifications
H; H04; H04B; H04B3/00; H04B3/02; H04B3/04; H04B3/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
174 words
A CONTROLLABLE ATTENUATION NETWORK HAVING FIRST AND SECOND TERMINAL PAIRS EACH INCLUDING FIRST AND SECOND TERMINALS, SAID NETWORK COMPRISING A THERMISTOR HAVING A HEATER AND A HEATED ELEMENT, A PAIR OF CONTROL TERMINALS CONNECTED TO SAID HEATER, A FIXED RESISTOR, AND A 1/1 TURN RATIO TRANSFORMER HAVING A FIRST AND A SECOND WINDING, SAID WINDINGS EACH HAVING A NON-COMMON END AND A COMMON END CONSTITUTING A COMMON POINT WHERETHROUGH SAID WINDINGS ARE CONNECTED IN SERIES AND PHASE OPPOSITION; SAID NETWORK FURTHER COMPRISING CONNECTION MEANS BETWEEN SAID TERMINAL PAIRS, THERMISTOR, RESISTOR AND TRANSFORMER; SAID CONNECTION MEANS CONSISTING OF SAID FIXED RESISTOR CONNECTED BETWEEN SAID FIRST TERMINALS OF SAID FIRST AND SECOND TERMINAL PAIRS, SAID HEATED ELEMENT OF SAID THERMISTOR CONNECTED BETWEEN SAID FIRST TERMINAL OF SAID FIRST TERMINAL PAIR AND THE NON-COMMON END OF SAID FIRST WINDING, A CONNECTION BETWEEN THE NON-COMMON END OF SAID SECOND WINDING AND SAID FIRST TERMINAL OF SAID SECOND TERMINAL PAIR, AND A DIRECT CONNECTION LINKING SAID SECOND TERMINALS OF SAID FIRST AND SECOND TERMINAL PAIRS AND SAID COMMON POINT.
Claim 2
Dependent Claim
174 words
A CONTROLLABLE ATTENUATION NETWORK HAVING FIRST AND SECOND TERMINAL PAIRS EACH INCLUDING FIRST AND SECOND TERMINALS, SAID NETWORK COMPRISING A THERMISTOR HAVING A HEATER AND A HEATED ELEMENT, A PAIR OF CONTROL TERMINALS CONNECTED TO SAID HEATER, A FIXED RESISTOR, AND A 1/1 TURN RATIO TRANSFORMER HAVING A FIRST AND A SECOND WINDING, SAID WINDINGS EACH HAVING A NON-COMMON END AND A COMMON END CONSTITUTING A COMMON POINT WHERETHROUGH SAID WINDINGS ARE CONNECTED IN SERIES AND PHASE OPPOSITION; SAID NETWORK FURTHER COMPRISING CONNECTION MEANS BETWEEN SAID TERMINAL PAIRS, THERMISTOR, RESISTOR AND TRANSFORMER; SAID CONNECTION MEANS CONSISTING OF SAID FIXED RESISTOR CONNECTED BETWEEN SAID FIRST TERMINALS OF SAID FIRST AND SECOND TERMINAL PAIRS, SAID HEATED ELEMENT OF SAID THERMISTOR CONNECTED BETWEEN SAID FIRST TERMINAL OF SAID FIRST TERMINAL PAIR AND THE NON-COMMON END OF SAID FIRST WINDING, A CONNECTION BETWEEN THE NON-COMMON END OF SAID SECOND WINDING AND SAID FIRST TERMINAL OF SAID SECOND TERMINAL PAIR, AND A DIRECT CONNECTION LINKING SAID SECOND TERMINALS OF SAID FIRST AND SECOND TERMINAL PAIRS AND SAID COMMON POINT.
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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |