Patent US3147401A successfully refreshed from Google Patents.
US3147401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
wotring
Assignee: —
•
Filing: —
•
Granted: 1964-09-01
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Expires: 1981-09-01
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:13
CPC Classifications
F; F23; F23Q; F23Q3/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
AN ELECTRIC IGNITION DEVICE COMPRISING A FIELD STRUCTURE INCLUDING A WINDING, A DRIVING MEMBER EXCITED BY SAID FIELD STRUCTURE, A PAIR OF RELATIVELY MOVABLE ELECTRODES CONNECTED IN SERIES WITH SAID WINDING, ONE OF SAID ELECTRODES BEING MOVABLE ABOUT AN AXIS OF ROTATION BETWEEN TWO ANGULARLY SPACED APART POSITIONS, MEANS FOR ENERGIZING THE SERIES CONNECTION OF SAID WINDING AND SAID ELECTRODES, MEANS FOR BIASING SAID ONE ELECTRODE TO ONE OF SAID POSITIONS, AND MEANS INCLUDING SAID DRIVING MEMBER FOR DRIVING THE MOVABLE ELECTRODE TO THE OTHER OF THE TWO POSITIONS, SAID BIASING MEANS AND SAID DRIVING MEANS ACTING ALTERNATELY UPON SAID MOVABLE ELECTRODE TO EFFECT A
Claim 2
Dependent Claim
105 words
AN ELECTRIC IGNITION DEVICE COMPRISING A FIELD STRUCTURE INCLUDING A WINDING, A DRIVING MEMBER EXCITED BY SAID FIELD STRUCTURE, A PAIR OF RELATIVELY MOVABLE ELECTRODES CONNECTED IN SERIES WITH SAID WINDING, ONE OF SAID ELECTRODES BEING MOVABLE ABOUT AN AXIS OF ROTATION BETWEEN TWO ANGULARLY SPACED APART POSITIONS, MEANS FOR ENERGIZING THE SERIES CONNECTION OF SAID WINDING AND SAID ELECTRODES, MEANS FOR BIASING SAID ONE ELECTRODE TO ONE OF SAID POSITIONS, AND MEANS INCLUDING SAID DRIVING MEMBER FOR DRIVING THE MOVABLE ELECTRODE TO THE OTHER OF THE TWO POSITIONS, SAID BIASING MEANS AND SAID DRIVING MEANS ACTING ALTERNATELY UPON SAID MOVABLE ELECTRODE TO EFFECT A
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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) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |