Patent US3291937A successfully refreshed from Google Patents.
US3291937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Explosive disconnect having the explosive means thermally and electrically isolated from resistance ignition means
Assignee: Westinghouse Electric Corp
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Filing: 1965-10-11
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Granted: 1966-12-13
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Expires: 1985-10-11
Abstract
No abstract record available.
Inventors
- 👤 Charles H Carothers
- 👤 Philip W Bogner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:34
CPC Classifications
H; H01; H01H; H01H39/00; H01T; H01T1/00; H01T1/14
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
112 words
A CIRCUIT INTERRUPTER COMPRISING AN INSULATING HOUSING CONTAINING A SPARK GAP, AN ELECTRICAL RESISTANCE HEATING MEANS CONNECTED IN ELECTRICAL PARALLEL ACROSS THE GAP, AN EXPLOSIVE MEANS FOR DISCONNECTING THE CIRCUIT DISPOSED IN CLOSE PROXIMITY TO THE RESISTANCE MEANS, THE RESISTANCE MEANS ADAPTED TO IGNITE THE EXPLOSIVE MEANS UPON BEING HEATED BY A CONTINUOUS FLOW OF CURRENT, THE EXPLOSIVE MEANS BEING ADAPTED TO RUPTURE THE HOUSING AND TO REMOVE AN ELECTRODE FORMING THE GAP FROM THE HOUSING, THE EXPLOSIVE MEANS BEING FURTHER EFFECTIVE TO DISCONNECT THE RESISTANCE MEANS CONNECTED ACROSS THE GAP, THE EXPLOSIVE MEANS BEING THERMALLY AND ELECTRICALLY ISOLATED FROM THE GAP AND RESISTANCE MEANS UNDER NORMAL OPERATING CONDITIONS AND CURRENT FLOW.
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) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |