Patent US3131327A successfully refreshed from Google Patents.
US3131327A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Type ignition circuit condenser discharge
Assignee: Studebaker Worthington Inc
•
Filing: —
•
Granted: 1964-04-28
•
Expires: 1981-04-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:44
CPC Classifications
F; F02; F02P; F02P3/00; F02P3/06; F02P3/08; F02P3/0807; F02P3/0838; F02P15/00; F02P15/08; F02P3/0876
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
AN IGNITION CIRCUIT FOR INTERNAL COMBUSTION ENGINES HAVING A SPARK PLUG IN EACH COMBUSTION CHAMBER, A SOURCE OF DIRECT CURRENT, MEANS CONNECTED TO SAID SOURCE FOR CREATING A SERIES OF CURRENT PULSES SYNCHRONIZED WITH THE MOVEMENT OF THE ENGINE''S PISTONS, A CURRENT AMPLIFIER FOR AMPLIFYING PULSES CREATED BY SAID MEANS, AN INDUCTOR COUPLED TO AN OUTPUT CIRCUIT OF SAID AMPLIFIER FOR STORING ENERGY IN THE INDUCTOR''S MAGNETIC FIELD, A CAPACITOR COUPLED TO SAID INDUCTOR FOR RECEIVING A CHARGE THEREFROM AND A DISCHARGE CIRCUIT WHICH INCLUDES SAID CAPACITOR, A SWITCHING DEVICE, AND AN INPUT WINDING OF AN OUTPUT TRANSFORMER, SAID OUTPUT TRANSFORMER HAVING A WINDING COUPLED TO SAID SPARK PLUGS.
Claim 2
Dependent Claim
109 words
AN IGNITION CIRCUIT FOR INTERNAL COMBUSTION ENGINES HAVING A SPARK PLUG IN EACH COMBUSTION CHAMBER, A SOURCE OF DIRECT CURRENT, MEANS CONNECTED TO SAID SOURCE FOR CREATING A SERIES OF CURRENT PULSES SYNCHRONIZED WITH THE MOVEMENT OF THE ENGINE''S PISTONS, A CURRENT AMPLIFIER FOR AMPLIFYING PULSES CREATED BY SAID MEANS, AN INDUCTOR COUPLED TO AN OUTPUT CIRCUIT OF SAID AMPLIFIER FOR STORING ENERGY IN THE INDUCTOR''S MAGNETIC FIELD, A CAPACITOR COUPLED TO SAID INDUCTOR FOR RECEIVING A CHARGE THEREFROM AND A DISCHARGE CIRCUIT WHICH INCLUDES SAID CAPACITOR, A SWITCHING DEVICE, AND AN INPUT WINDING OF AN OUTPUT TRANSFORMER, SAID OUTPUT TRANSFORMER HAVING A WINDING COUPLED TO SAID SPARK PLUGS.
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) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |