Patent US3170069A successfully refreshed from Google Patents.
US3170069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency-dividing circuit
Assignee: AT&T Inc
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Filing: 1960-12-16
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Granted: 1965-02-16
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Expires: 1980-12-16
Abstract
No abstract record available.
Inventors
- 👤 Reginald A Kaenel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:11
CPC Classifications
H; H03; H03B; H03B19/00; H03B19/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
IN A CONBINATION IN FREQUENCY-DIVIDING CIRCUIT, AN INDUCTOR HAVING A CORE EXHIBITING A RECTANGULAR HYSTERESIS LOOP CHARACTERISTIC WHICH INCLUDES MAXIMUM NEGITIVE AND POSITIVE REMANENT FLUX REGIONS, A TUNNEL DIODE CONNECTED IN SERIES WITH SAID INDUCTOR, MEANS FOR BIASING SAID DIODE FOR MONOSTABLE OPERATION, MEANS CONNECTED IN SERIES WITH SAID INDUCTOR-DIODE SERIES ARRANGEMENT FOR SUPPLYING THERETO SETS OF PULSES WHICH STEP THE FLUX CONDITION OF SAID CORE TOWARD SAID MAXIMUM POSITIVE REMANENT FLUX REGION, ONLY THE LAST ONE OF EACH SET PULSES BEING EFFECTIVE TO ACTUALLY SHIFT SAID CORE TO ITS MAXIMUM POSITIVE REMANENT FLUX REGION AND TO TRIGGER SAID DIODE TO UNDERGO A REGENERATIVE SWITCHING CYCLE, AND CONSTANT CURRENT SOURCE MEANS CONNECTED IN PARALLEL WITH SAID DIODE AND RESPONSIVE TO SAID DIODE UNDERGOING A REGENERATIVE SWITCHING CYCLE FOR CAUSING A CURRENT FLOW THROUGH SAID INDUCTOR IN A DIRECTION TO RESET SAID CORE TO ITS MAXIMUM NEGATIVE REMANENT FLUX REGION.
Claim 2
Dependent Claim
149 words
IN A CONBINATION IN FREQUENCY-DIVIDING CIRCUIT, AN INDUCTOR HAVING A CORE EXHIBITING A RECTANGULAR HYSTERESIS LOOP CHARACTERISTIC WHICH INCLUDES MAXIMUM NEGITIVE AND POSITIVE REMANENT FLUX REGIONS, A TUNNEL DIODE CONNECTED IN SERIES WITH SAID INDUCTOR, MEANS FOR BIASING SAID DIODE FOR MONOSTABLE OPERATION, MEANS CONNECTED IN SERIES WITH SAID INDUCTOR-DIODE SERIES ARRANGEMENT FOR SUPPLYING THERETO SETS OF PULSES WHICH STEP THE FLUX CONDITION OF SAID CORE TOWARD SAID MAXIMUM POSITIVE REMANENT FLUX REGION, ONLY THE LAST ONE OF EACH SET PULSES BEING EFFECTIVE TO ACTUALLY SHIFT SAID CORE TO ITS MAXIMUM POSITIVE REMANENT FLUX REGION AND TO TRIGGER SAID DIODE TO UNDERGO A REGENERATIVE SWITCHING CYCLE, AND CONSTANT CURRENT SOURCE MEANS CONNECTED IN PARALLEL WITH SAID DIODE AND RESPONSIVE TO SAID DIODE UNDERGOING A REGENERATIVE SWITCHING CYCLE FOR CAUSING A CURRENT FLOW THROUGH SAID INDUCTOR IN A DIRECTION TO RESET SAID CORE TO ITS MAXIMUM NEGATIVE REMANENT FLUX REGION.
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) | 1968-02-16 | 1968-08-17 | 1969-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-16 | 1972-08-17 | 1973-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-16 | 1976-08-17 | 1977-02-16 | $7700.00 | Window Closed / Lapsed |