US3249808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ignition system
Assignee: Motors Liquidation Co
•
Filing: 1961-09-21
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Granted: 1966-05-03
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Expires: 1981-09-21
Abstract
No abstract record available.
Inventors
- 👤 Brooks H Short
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:22
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/08; H03K17/081; H03K17/0812; H03K17/08126; F; F02; F02P; F02P15/00; F02P15/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
AN IGNITION SYSTEM FOR CONTROLLING THE FIRING OF A SPARK PLUG OF AN INTERNAL COMBUSTION ENGINE COMPRISING AN IGNITION TRANSFORMER HAVING A PRIMARY WINDING AND A SECONDARY WINDING, MEANS CONNECTING SAID SECONDARY WINDING WITH SAID SPARK PLUG, A SOURCE OF DIRECT CURRENT VOLTAGE WHICH MAY FLUCTUATE UNDER DIFFERENT CONDITIONS OF OPERATION, A SERIES CIRCUIT CONNECTED ACROSS SAID SOURCE OF VOLTAGE INCLUDING THE PRIMARY WINDING OF SAID IGNITION TRANSFORMER AND A FIRST SWITCHING MEANS, A SECOND SWITCHING MEANS OPERATING IN SYNCHRONISM WITH SAID ENGINE CON-
Claim 2
Dependent Claim
84 words
AN IGNITION SYSTEM FOR CONTROLLING THE FIRING OF A SPARK PLUG OF AN INTERNAL COMBUSTION ENGINE COMPRISING AN IGNITION TRANSFORMER HAVING A PRIMARY WINDING AND A SECONDARY WINDING, MEANS CONNECTING SAID SECONDARY WINDING WITH SAID SPARK PLUG, A SOURCE OF DIRECT CURRENT VOLTAGE WHICH MAY FLUCTUATE UNDER DIFFERENT CONDITIONS OF OPERATION, A SERIES CIRCUIT CONNECTED ACROSS SAID SOURCE OF VOLTAGE INCLUDING THE PRIMARY WINDING OF SAID IGNITION TRANSFORMER AND A FIRST SWITCHING MEANS, A SECOND SWITCHING MEANS OPERATING IN SYNCHRONISM WITH SAID ENGINE CON-
References Cited (Backward Citations)
US2939018A
Cited
US2966615A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |