US3229226A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Free-running controlled rectifier inverter circuit
Assignee: US Philips Corp
•
Filing: 1961-04-07
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Granted: 1966-01-11
•
Expires: 1981-04-07
Abstract
No abstract record available.
Inventors
- 👤 Wilting Johannes Jacobus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:41
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/505; H02M7/515; H02M7/516
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A SELF-EXCITED OSCILLATOR FOR CONVERTING THE VOLTAGE OF DIRECT-CURRENT SUPPLY SOURCE HAVING TWO TERMINALS INTO AN ALTERNATING VOLTAGE, COMPRISING ONE CONTROLLED RECTIFIER HAVING A CATHODE ELECTRODE, AN ANODE ELECTRODE, A CONTROL ELECTRODE AND AN ANODE-CATHODE PATH, AN OUTPUT CIRCUIT INCLUDING AT LEAST ONE INDUCTIVE ELEMENT, ONE CAPACTIVE ELEMENT AND A FEEDBACK ELEMENT HAVING TWO STABLE STATES AND COMPRISING A CORE OF FERROMAGNETIC MATERIAL HAVING A SUBSTANTIALLY RECTANGULAR HYSTERESIS LOOP AND PRIMARY AND SECONDARY WINDINGS INDUCTIVELY COUPLED TO SAID CORE, SAID ELEMENTS FORMING A TUNED CIRCUIT AND SAID OUTPUT CIRCUIT BEING CONNECTED ACROSS THE TERMINALS OF SAID SUPPLY SOURCE IN SERIES WITH SAID ANODE-CATHODE PATH, A LOAD COUPLED TO
Claim 2
Dependent Claim
108 words
A SELF-EXCITED OSCILLATOR FOR CONVERTING THE VOLTAGE OF DIRECT-CURRENT SUPPLY SOURCE HAVING TWO TERMINALS INTO AN ALTERNATING VOLTAGE, COMPRISING ONE CONTROLLED RECTIFIER HAVING A CATHODE ELECTRODE, AN ANODE ELECTRODE, A CONTROL ELECTRODE AND AN ANODE-CATHODE PATH, AN OUTPUT CIRCUIT INCLUDING AT LEAST ONE INDUCTIVE ELEMENT, ONE CAPACTIVE ELEMENT AND A FEEDBACK ELEMENT HAVING TWO STABLE STATES AND COMPRISING A CORE OF FERROMAGNETIC MATERIAL HAVING A SUBSTANTIALLY RECTANGULAR HYSTERESIS LOOP AND PRIMARY AND SECONDARY WINDINGS INDUCTIVELY COUPLED TO SAID CORE, SAID ELEMENTS FORMING A TUNED CIRCUIT AND SAID OUTPUT CIRCUIT BEING CONNECTED ACROSS THE TERMINALS OF SAID SUPPLY SOURCE IN SERIES WITH SAID ANODE-CATHODE PATH, A LOAD COUPLED TO
References Cited (Backward Citations)
US2952818A
Cited
US3019355A
Cited
US3034015A
Cited
US3119058A
Cited
US3120634A
Cited
US3120633A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |