US3242420A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ignition system
Assignee: Cooper Bessemer Corp
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Filing: 1962-11-13
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Granted: 1966-03-22
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Expires: 1982-11-13
Abstract
No abstract record available.
Inventors
- 👤 Lawrence S Ulrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:29
CPC Classifications
F; F02; F02P; F02P3/00; F02P3/06; F02P3/08; F02P3/0876; F02P3/0884
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
IN AN ELECTRONIC IGNITION CIRCUIT: FIRST MEANS INCLUDING A GATED DEVICE HAVING A GATE ELECTRODE AND WHICH DEVICE IS CAUSED TO BE CONDUCTIVE WHEN A PREDETERMINED VOLTAGE IS APPLIED TO SAID GATE ELECTRODE, A TRANSISTOR HAVING EMITTER, BASE, AND COLLECTOR ELECTRODES AND WHICH IS CONDUCTIVE WHEN A VOLTAGE OF PREDETERMINED POLARITY RELATIVE TO ITS EMITTER AND COLLECTOR IS APPLIED TO ITS BASE, A PAIR OF TERMINALS, MEANS FOR SUPPLYING VOLTAGE OF SAID PREDETERMINED POLARITY TO ONE OF SAID TERMINALS AND FOR SUPPLYING VOLTAGE OF THE OPPOSITE POLARITY TO THE OTHER OF SAID TERMINALS, INTERRUPTER MEANS FOR PERIODICALLY APPLYING AND REMOVING SAID VOLTAGES TO RESPECTIVE TERMINALS, SAID OTHER ONE OF SAID TERMINALS BEING CONNECTED TO SAID BASE,
Claim 2
Dependent Claim
116 words
IN AN ELECTRONIC IGNITION CIRCUIT: FIRST MEANS INCLUDING A GATED DEVICE HAVING A GATE ELECTRODE AND WHICH DEVICE IS CAUSED TO BE CONDUCTIVE WHEN A PREDETERMINED VOLTAGE IS APPLIED TO SAID GATE ELECTRODE, A TRANSISTOR HAVING EMITTER, BASE, AND COLLECTOR ELECTRODES AND WHICH IS CONDUCTIVE WHEN A VOLTAGE OF PREDETERMINED POLARITY RELATIVE TO ITS EMITTER AND COLLECTOR IS APPLIED TO ITS BASE, A PAIR OF TERMINALS, MEANS FOR SUPPLYING VOLTAGE OF SAID PREDETERMINED POLARITY TO ONE OF SAID TERMINALS AND FOR SUPPLYING VOLTAGE OF THE OPPOSITE POLARITY TO THE OTHER OF SAID TERMINALS, INTERRUPTER MEANS FOR PERIODICALLY APPLYING AND REMOVING SAID VOLTAGES TO RESPECTIVE TERMINALS, SAID OTHER ONE OF SAID TERMINALS BEING CONNECTED TO SAID BASE,
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) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |