US3359459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ignition apparatus
Assignee: Individual
•
Filing: 1964-11-13
•
Granted: 1967-12-19
•
Expires: 1984-11-13
Abstract
No abstract record available.
Inventors
- 👤 Ernest J Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:11
CPC Classifications
F; F23; F23Q; F23Q2/00; F23Q2/28; H; H02; H02K; H02K39/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A SPARK-GENERATING DEVICE INCLUDING ELECTRODES DEFINING A SPARK GAP AND COMPRISING A PERMANENT MAGNET, MEANS INCLUDING AN ARMATURE FOR PROVIDING A FIRST SUBSTANTIALLY CLOSED-LOOP FLUX PATH FOR SAID MAGNET, MEANS FOR PROVIDING A SECOND SUBSTANTIALLY CLOSED-LOOP FLUX PATH, MEANS FOR RAPIDLY MOVING SAID MAGNET BETWEEN SAID FIRST AND SECOND FLUX PATHS TO VARY THE FLUX IN SAID FIRST FLUX PATH, AND COIL MEANS MOUNTED ON SAID ARMATURE AND CONNECTED TO THE ELECTRODES FOR GENERATING A SPARK IN THE SPARK GAP IN RESPONSE TO FLUX CHANGES IN SAID FIRST FLUX PATH OF A PRESELECTED LEVEL.
Claim 2
Dependent Claim
94 words
A SPARK-GENERATING DEVICE INCLUDING ELECTRODES DEFINING A SPARK GAP AND COMPRISING A PERMANENT MAGNET, MEANS INCLUDING AN ARMATURE FOR PROVIDING A FIRST SUBSTANTIALLY CLOSED-LOOP FLUX PATH FOR SAID MAGNET, MEANS FOR PROVIDING A SECOND SUBSTANTIALLY CLOSED-LOOP FLUX PATH, MEANS FOR RAPIDLY MOVING SAID MAGNET BETWEEN SAID FIRST AND SECOND FLUX PATHS TO VARY THE FLUX IN SAID FIRST FLUX PATH, AND COIL MEANS MOUNTED ON SAID ARMATURE AND CONNECTED TO THE ELECTRODES FOR GENERATING A SPARK IN THE SPARK GAP IN RESPONSE TO FLUX CHANGES IN SAID FIRST FLUX PATH OF A PRESELECTED LEVEL.
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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) | 1970-12-18 | 1971-06-19 | 1971-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-18 | 1975-06-19 | 1975-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-18 | 1979-06-19 | 1979-12-19 | $7700.00 | Window Closed / Lapsed |