Patent US2117611A successfully refreshed from Google Patents.
Patent US3335320A successfully refreshed from Google Patents.
US3335320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ignition circuit with voltage regulator
Assignee: Studebaker Worthington Inc
•
Filing: 1965-02-24
•
Granted: 1967-08-08
•
Expires: 1985-02-24
Abstract
No abstract record available.
Inventors
- 👤 Halsey P Quinn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:26
CPC Classifications
F; F02; F02P; F02P3/00; F02P3/06; F02P3/08; F02P3/0876; F02P3/0884
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
359 words
AN IGNITION CIRCUIT FOR INTERNAL COMBUSTION ENGINES COMPRISING; A SOURCE OF DIRECT CURRENT POWER; A PAIR OF BREAKER CONTACTS CONNECTED IN SERIES BETWEEN SAID SOURCE OF POWER AND A RESISTOR, SAID CONTACTS OPERATED BY A DISTRIBUTOR SHAFT WHICH IS COUPLED TO PISTONS IN THE ENGINE, A CHARGING TRANSFORMER INCLUDING A FERROMAGNETIC CORE HOLDING A PRIMARY WINDING AND A SECONDARY WINDING, SAID SECONDARY WINDING CONNECTED TO A UTILIZATION CIRCUIT INCLUDING A STORAGE CAPACITOR, AN OUTPUT TRANSFORMER, A DISTRIBUTOR, A PLURALITY OF SPARK PLUGS, AND A SWITCHING DEVICE FOR DISCHARGING THE STORAGE CAPACITOR THROUGH A PRIMARY WINDING OF THE OUTPUT TRANSFORMER; A FIRST CONTROLLED RECTIFIER HAVING AN ANODE, A CATHODE, AND A CONTROL ELECTRODE ADAPTED TO MAKE THE ANODE-CATHODE CIRCUIT OF THE RECTIFIER CONDUCTIVE WHEN ACTIVATED BY A POSITIVE PULSE; AN INDUCTOR INCLUDING A WINDING ON A FERROMAGNETIC CORE CONNECTED IN SERIES WITH THE PRIMARY WINDING ON THE CHARGING TRANSFORMER AND THE FIRST CONTROLLED RECTIFIER; SAID SERIES CIRCUIT CONNECTED ACROSS THE SOURCE OF POWER; A FIRST CONTROL CIRCUIT HAVING INPUT TERMINALS CONNECTED ACROSS THE BREAKER CONTACTS AND AN OUTPUT CIRCUIT CONNECTED ACROSS THE CONTROL ELECTRODE AND THE CATHODE OF THE FIRST CONTROLLED RECTIFIER, SAID FIRST CONTROL CIRCUIT ADPATED TO GENERATE A POSITIVE VOLTAGE PULSE WHEN THE BREAKER CONTACTS ARE OPENED; A SECOND CONTROL CIRCUIT FOR CONTROLLING THE TIME INTERVALS OF THE CURRENT PULSES IN THE PRIMARY WINDING OF THE CHARGING TRANSFORMER, SAID CONTROL CIRCUIT INCLUDING A PAIR OF INPUT TERMINALS CONNECTED IN SERIES WITH SAID PRIMARY WINDING AND SAID INDUCTOR, A SECOND CONTROLLED RECTIFIER HAVING ITS ANODE AND CATHODE CONNECTED ACROSS A PORTION OF SAID INDUCTOR, A UNIJUCTION TRANSISTOR HAVING ITS BASE 2 COUPLED TO THE SOURCE OF POTENTIAL, ITS BASE 1 CONNECTED TO THE FIRING ELECTRODE OF THE SECOND CONTROLLED RECTIFIER, AND ITS EMITTER ELECTRODE COUPLED TO A SECOND STORAGE CAPACITOR; AND A PNP TRANSISTOR FOR SWITCHING CURRENT ON AND OFF THROUGH THE PRIMARY WINDING OF THE CHARGING TRANSFORMER, SAID PNP TRANSISTOR HAVING ITS EMITTER AND COLLECTOR ELECTRODES CONNECTED IN SERIES BETWEEN THE PRIMARY WINDING OF THE CHARGING TRANSFORMER AND NEGATIVE TERMINAL OF THE SOURCE OF POTENTIAL; SAID PNP TRANSISTOR HAVING ITS BASE ELECTRODE CONNECTED TO THE SECOND CHARGING CAPACITOR.
Claim 2
Dependent Claim
359 words
AN IGNITION CIRCUIT FOR INTERNAL COMBUSTION ENGINES COMPRISING; A SOURCE OF DIRECT CURRENT POWER; A PAIR OF BREAKER CONTACTS CONNECTED IN SERIES BETWEEN SAID SOURCE OF POWER AND A RESISTOR, SAID CONTACTS OPERATED BY A DISTRIBUTOR SHAFT WHICH IS COUPLED TO PISTONS IN THE ENGINE, A CHARGING TRANSFORMER INCLUDING A FERROMAGNETIC CORE HOLDING A PRIMARY WINDING AND A SECONDARY WINDING, SAID SECONDARY WINDING CONNECTED TO A UTILIZATION CIRCUIT INCLUDING A STORAGE CAPACITOR, AN OUTPUT TRANSFORMER, A DISTRIBUTOR, A PLURALITY OF SPARK PLUGS, AND A SWITCHING DEVICE FOR DISCHARGING THE STORAGE CAPACITOR THROUGH A PRIMARY WINDING OF THE OUTPUT TRANSFORMER; A FIRST CONTROLLED RECTIFIER HAVING AN ANODE, A CATHODE, AND A CONTROL ELECTRODE ADAPTED TO MAKE THE ANODE-CATHODE CIRCUIT OF THE RECTIFIER CONDUCTIVE WHEN ACTIVATED BY A POSITIVE PULSE; AN INDUCTOR INCLUDING A WINDING ON A FERROMAGNETIC CORE CONNECTED IN SERIES WITH THE PRIMARY WINDING ON THE CHARGING TRANSFORMER AND THE FIRST CONTROLLED RECTIFIER; SAID SERIES CIRCUIT CONNECTED ACROSS THE SOURCE OF POWER; A FIRST CONTROL CIRCUIT HAVING INPUT TERMINALS CONNECTED ACROSS THE BREAKER CONTACTS AND AN OUTPUT CIRCUIT CONNECTED ACROSS THE CONTROL ELECTRODE AND THE CATHODE OF THE FIRST CONTROLLED RECTIFIER, SAID FIRST CONTROL CIRCUIT ADPATED TO GENERATE A POSITIVE VOLTAGE PULSE WHEN THE BREAKER CONTACTS ARE OPENED; A SECOND CONTROL CIRCUIT FOR CONTROLLING THE TIME INTERVALS OF THE CURRENT PULSES IN THE PRIMARY WINDING OF THE CHARGING TRANSFORMER, SAID CONTROL CIRCUIT INCLUDING A PAIR OF INPUT TERMINALS CONNECTED IN SERIES WITH SAID PRIMARY WINDING AND SAID INDUCTOR, A SECOND CONTROLLED RECTIFIER HAVING ITS ANODE AND CATHODE CONNECTED ACROSS A PORTION OF SAID INDUCTOR, A UNIJUCTION TRANSISTOR HAVING ITS BASE 2 COUPLED TO THE SOURCE OF POTENTIAL, ITS BASE 1 CONNECTED TO THE FIRING ELECTRODE OF THE SECOND CONTROLLED RECTIFIER, AND ITS EMITTER ELECTRODE COUPLED TO A SECOND STORAGE CAPACITOR; AND A PNP TRANSISTOR FOR SWITCHING CURRENT ON AND OFF THROUGH THE PRIMARY WINDING OF THE CHARGING TRANSFORMER, SAID PNP TRANSISTOR HAVING ITS EMITTER AND COLLECTOR ELECTRODES CONNECTED IN SERIES BETWEEN THE PRIMARY WINDING OF THE CHARGING TRANSFORMER AND NEGATIVE TERMINAL OF THE SOURCE OF POTENTIAL; SAID PNP TRANSISTOR HAVING ITS BASE ELECTRODE CONNECTED TO THE SECOND CHARGING CAPACITOR.
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) | 1970-08-07 | 1971-02-06 | 1971-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-07 | 1975-02-06 | 1975-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-07 | 1979-02-06 | 1979-08-08 | $7700.00 | Window Closed / Lapsed |