Patent US707353A successfully refreshed from Google Patents.
Patent US845458A successfully refreshed from Google Patents.
Patent US3343033A successfully refreshed from Google Patents.
US3343033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aid to striking an electric arc
Assignee: Avco Corp
•
Filing: 1964-12-01
•
Granted: 1967-09-19
•
Expires: 1984-12-01
Abstract
No abstract record available.
Inventors
- 👤 Peterson John David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:46
CPC Classifications
H; H05; H05H; H05H1/00; H05H1/24; H05H1/26; H05H1/32; H05H1/34; H05H1/3478
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
IN AN ELECTRIC ARC DEVICE CONTAINING AT LEAST TWO SPACED ELECTRODES HAVING A PREDETERMINED ARC GAP SPACING AND MEANS FOR COUPLING SAID ELECTRODES TO HIGH-FREQUENCY STARTING POWER SUPPLY MEANS AND NORMAL OPERATING POWER SUPPLY MEANS, A SPACER SEPARATING THE ELECTRODES BY A SECOND PREDETERMINED SPACING LONGER THAN SAID ARC GAP SPACING, SAID SPACER CONTAINING AT LEAST ONE NORMALLY INSULATING PORTION IN SERIES WITH AT LEAST ONE ELECTRICAL CONDUCTING PORTION, THE COMBINED LENGTHS OF SAID NORMALLY INSULATING AND ELECTRICAL CONDUCTING PORTIONS BRIDGING SAID SECOND PREDETERMINED SPACING BETWEEN SAID ELECTRODES, SAID NORMALLY INSULATING PORTION HAVING A LENGTH LESS THAN SAID ARC GAP SPACING.
Claim 2
Dependent Claim
101 words
IN AN ELECTRIC ARC DEVICE CONTAINING AT LEAST TWO SPACED ELECTRODES HAVING A PREDETERMINED ARC GAP SPACING AND MEANS FOR COUPLING SAID ELECTRODES TO HIGH-FREQUENCY STARTING POWER SUPPLY MEANS AND NORMAL OPERATING POWER SUPPLY MEANS, A SPACER SEPARATING THE ELECTRODES BY A SECOND PREDETERMINED SPACING LONGER THAN SAID ARC GAP SPACING, SAID SPACER CONTAINING AT LEAST ONE NORMALLY INSULATING PORTION IN SERIES WITH AT LEAST ONE ELECTRICAL CONDUCTING PORTION, THE COMBINED LENGTHS OF SAID NORMALLY INSULATING AND ELECTRICAL CONDUCTING PORTIONS BRIDGING SAID SECOND PREDETERMINED SPACING BETWEEN SAID ELECTRODES, SAID NORMALLY INSULATING PORTION HAVING A LENGTH LESS THAN SAID ARC GAP SPACING.
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) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |