US3213388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-phase oscillator utilizing single-phase techniques
Assignee: Individual
•
Filing: 1961-07-27
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Granted: 1965-10-19
•
Expires: 1981-07-27
Abstract
No abstract record available.
Inventors
- 👤 Raymond S Rothschild
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:36
CPC Classifications
H; H03; H03B; H03B5/00; H03B5/20; H03B5/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A MULTI-PHASE OSCILLATOR COMPRISING AN AMPLIFIER HAVING OUTPUT AND INPUT TERMINALS, SAID OUTPUT TERMINAL BEING CONNECTED TO SAID INPUT TERMINAL BY A FIRST IMPEDANCE COMPRISING A FIRST RESISTOR AND A FIRST CAPACITOR CONNECTED IN SERIES, SAID INPUT TERMINAL BEING CONNECTED TO GROUND BY A SECOND IMPEDANCE, OPERATIVELY REMOTE FROM SAID OUTPUT COMPRISING A SECOND RESISTOR CONNECTED IN PARALLE WITH A NETWORK COMPRISING A SECOND CAPACITOR AND A THIRD RESISTOR CONNECTED IN SERIES, THE PHASE ANGLES OF SAID IMPEDANCES BEING THE SAME AND SUCH AS TO CAUSE THE PHASE OF THE SIGNAL FED TO SAID INPUT TERMINAL FROM SAID OUTPUT TERMINAL TO BE IN OSCILLATION-PRODUCING PHASE WITH SAID AMPLIFIER OUTPUT VOLTAGE, AND AN ELECTRICAL OUTOF-PHASE OUTPUT CONNECTION TO A POINT ON SAID THIRD RESISTOR SPACED FROM THE GROUND-CONNECTED END THEREOF.
Claim 2
Dependent Claim
129 words
A MULTI-PHASE OSCILLATOR COMPRISING AN AMPLIFIER HAVING OUTPUT AND INPUT TERMINALS, SAID OUTPUT TERMINAL BEING CONNECTED TO SAID INPUT TERMINAL BY A FIRST IMPEDANCE COMPRISING A FIRST RESISTOR AND A FIRST CAPACITOR CONNECTED IN SERIES, SAID INPUT TERMINAL BEING CONNECTED TO GROUND BY A SECOND IMPEDANCE, OPERATIVELY REMOTE FROM SAID OUTPUT COMPRISING A SECOND RESISTOR CONNECTED IN PARALLE WITH A NETWORK COMPRISING A SECOND CAPACITOR AND A THIRD RESISTOR CONNECTED IN SERIES, THE PHASE ANGLES OF SAID IMPEDANCES BEING THE SAME AND SUCH AS TO CAUSE THE PHASE OF THE SIGNAL FED TO SAID INPUT TERMINAL FROM SAID OUTPUT TERMINAL TO BE IN OSCILLATION-PRODUCING PHASE WITH SAID AMPLIFIER OUTPUT VOLTAGE, AND AN ELECTRICAL OUTOF-PHASE OUTPUT CONNECTION TO A POINT ON SAID THIRD RESISTOR SPACED FROM THE GROUND-CONNECTED END THEREOF.
References Cited (Backward Citations)
US2236985A
Cited
US2666851A
Cited
US2601416A
Cited
US2820903A
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US2778940A
Cited
US2791694A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |