Patent US4818254A successfully refreshed from Google Patents.
Patent US3230416A successfully refreshed from Google Patents.
US3230416A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low voltage protective gaps having magnetic means for circulating arcs
Assignee: General Electric Co
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Filing: 1963-04-10
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Granted: 1966-01-18
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Expires: 1983-04-10
Abstract
No abstract record available.
Inventors
- 👤 Jr Sidney R Smith
- 👤 Eugene C Sakshaug
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:03
CPC Classifications
H; H01; H01T; H01T1/00; H01T1/02; H01T1/04; H01T1/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
AN ARC GAP STRUCTURE COMPRISING A PAIR OF METALLIC TERMINALS CONNECTABLE ACROSS AN ELECTRICAL POTENTIAL, A PAIR OF GAP ELECTRODES MOUNTED BETWEEN SAID TERMINALS, A PAIR OF ELECTRICAL INSULATION MEMBERS MOUNTED BETWEEN SAID GAP ELECTRODES AND ELECTRICALLY INSULATING SAID GAP ELECTRODES FROM EACH OTHER, A TRIGGER ELECTRODE MOUNTED BETWEEN SAID INSULATION MEMBERS AND ELECTRICALLY CONNECTED TO ONE OF SAID GAP ELECTRODES THROUGH AN ELECTRICAL IMPEDANCE, SAID GAP ELECTRODES BEING SHAPED TO PROVIDE A NARROW SPARK-OVER PORTION WITH OUTER ANNULAR POR-
Claim 2
Dependent Claim
80 words
AN ARC GAP STRUCTURE COMPRISING A PAIR OF METALLIC TERMINALS CONNECTABLE ACROSS AN ELECTRICAL POTENTIAL, A PAIR OF GAP ELECTRODES MOUNTED BETWEEN SAID TERMINALS, A PAIR OF ELECTRICAL INSULATION MEMBERS MOUNTED BETWEEN SAID GAP ELECTRODES AND ELECTRICALLY INSULATING SAID GAP ELECTRODES FROM EACH OTHER, A TRIGGER ELECTRODE MOUNTED BETWEEN SAID INSULATION MEMBERS AND ELECTRICALLY CONNECTED TO ONE OF SAID GAP ELECTRODES THROUGH AN ELECTRICAL IMPEDANCE, SAID GAP ELECTRODES BEING SHAPED TO PROVIDE A NARROW SPARK-OVER PORTION WITH OUTER ANNULAR POR-
References Cited (Backward Citations)
US1477303A
Cited
US2825008A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |