Patent US3303385A successfully refreshed from Google Patents.
US3303385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ignition unit
Assignee: Stewart Warner Corp
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Filing: 1964-02-11
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Granted: 1967-02-07
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Expires: 1984-02-11
Abstract
No abstract record available.
Inventors
- 👤 Staiger Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:45
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/505; H02M7/515; H02M7/516; F; F02; F02P; F02P11/00; F02P11/02; F02P11/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
AN IGNITION SYSTEM FOR A COMBUSTION HEATER OR THE LIKE COMPRISING A PAIR OF ELECTRODES FORMING A SPARK GAP, AN AUTOTRANSFORMER HAVING A HIGH VOLTAGE WINDING IN CONNECTION WITH SAID GAP TO PROVIDE HIGH VOLTAGE PULSES THEREACROSS, A SILICON CONTROLLED RECTIFIER HAVING AN ANODE, A CATHODE AND A GATE, A TAP ON SAID WINDING CONNECTED TO SAID ANODE, A D.C. POWER SOURCE HAVING A NEGATIVE TERMINAL IN CONNECTION WITH SAID GATE, AN INDUCTANCE IN CONNECTION AT ONE END WITH THE POSITIVE TERMINAL OF SAID D.C. POWER SOURCE AND AT ITS OTHER END WITH SAID WINDING, A CAPACITOR IN CONNECTION BETWEEN THE OTHER END OF SAID INDUCTANCE AND SAID CATHODE, AND A DIODE IN FORWARD CONNECTION BETWEEN SAID CATHODE AND THE NEGATIVE TERMINAL OF SAID POWER SOURCE.
Claim 2
Dependent Claim
126 words
AN IGNITION SYSTEM FOR A COMBUSTION HEATER OR THE LIKE COMPRISING A PAIR OF ELECTRODES FORMING A SPARK GAP, AN AUTOTRANSFORMER HAVING A HIGH VOLTAGE WINDING IN CONNECTION WITH SAID GAP TO PROVIDE HIGH VOLTAGE PULSES THEREACROSS, A SILICON CONTROLLED RECTIFIER HAVING AN ANODE, A CATHODE AND A GATE, A TAP ON SAID WINDING CONNECTED TO SAID ANODE, A D.C. POWER SOURCE HAVING A NEGATIVE TERMINAL IN CONNECTION WITH SAID GATE, AN INDUCTANCE IN CONNECTION AT ONE END WITH THE POSITIVE TERMINAL OF SAID D.C. POWER SOURCE AND AT ITS OTHER END WITH SAID WINDING, A CAPACITOR IN CONNECTION BETWEEN THE OTHER END OF SAID INDUCTANCE AND SAID CATHODE, AND A DIODE IN FORWARD CONNECTION BETWEEN SAID CATHODE AND THE NEGATIVE TERMINAL OF SAID POWER SOURCE.
References Cited (Backward Citations)
US3045148A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |