US3144012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine ignition system and tachometer
Assignee: Motors Liquidation Co
•
Filing: 1962-08-29
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Granted: 1964-08-11
•
Expires: 1982-08-29
Abstract
No abstract record available.
Inventors
- 👤 Ralph E Tarter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:01
CPC Classifications
F; F02; F02P; F02P5/00; F02P5/04; F02P5/145; F02P3/00; F02P3/02; F02P3/04; F02P3/0407; F02P3/0435; F02P7/00; F02P7/06; F02P7/067; G; G01; G01P; G01P3/00; G01P3/42; G01P3/44; G01P3/48; G01P3/4802; G01P3/4807; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
IN COMBINATION, AN INTERNAL COMBUSTION ENGINE, MAGNETIC PICK-UP MEANS INCLUDING A COIL WINDING AND ROTOR MEANS DRIVEN BY SAID ENGINE, AN IGNITION COIL HAVING A PRIMARY WINDING AND A SECONDARY WINDING, MEANS CONNECTING SAID SECONDARY WINDING WITH A SPARK PLUG ON SAID ENGINE, A SOURCE OF DIRECT CURRENT, SEMICONDUCTOR SWITCH MEANS CONNECTED BETWEEN SAID SOURCE OF DIRECT CURRENT AND SAID PRIMARY WINDING OF SAID IGNITION COIL FOR CONTROLLING CURRENT FLOW THROUGH SAID PRIMARY WINDING, AN ELECTRICAL TACHOMETER, AND MEANS CONNECTING SAID PICK-UP COIL WITH SAID ELECTRICAL TACHOMETER AND WITH SAID SEMICONDUCTOR SWITCH MEANS WHEREBY THE OUTPUT VOLTAGE OF SAID PICK-UP COIL CONTROLS BOTH THE CONDUCTION OF SAID
Claim 2
Dependent Claim
107 words
IN COMBINATION, AN INTERNAL COMBUSTION ENGINE, MAGNETIC PICK-UP MEANS INCLUDING A COIL WINDING AND ROTOR MEANS DRIVEN BY SAID ENGINE, AN IGNITION COIL HAVING A PRIMARY WINDING AND A SECONDARY WINDING, MEANS CONNECTING SAID SECONDARY WINDING WITH A SPARK PLUG ON SAID ENGINE, A SOURCE OF DIRECT CURRENT, SEMICONDUCTOR SWITCH MEANS CONNECTED BETWEEN SAID SOURCE OF DIRECT CURRENT AND SAID PRIMARY WINDING OF SAID IGNITION COIL FOR CONTROLLING CURRENT FLOW THROUGH SAID PRIMARY WINDING, AN ELECTRICAL TACHOMETER, AND MEANS CONNECTING SAID PICK-UP COIL WITH SAID ELECTRICAL TACHOMETER AND WITH SAID SEMICONDUCTOR SWITCH MEANS WHEREBY THE OUTPUT VOLTAGE OF SAID PICK-UP COIL CONTROLS BOTH THE CONDUCTION OF SAID
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |