Patent US3291949A successfully refreshed from Google Patents.
US3291949A
Expired / Lapsed
US
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Fluid-blast circuit interrupters having improved arc splitter structure
Assignee: Westinghouse Electric Corp
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Filing: 1964-09-18
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Granted: 1966-12-13
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Expires: 1984-09-18
Abstract
No abstract record available.
Inventors
- 👤 Charles F Cromer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:25
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/02; H01H33/04; H01H33/14; H01H33/70; H01H33/72; H01H33/75; H01H33/88; H01H33/94; H01H33/96
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A CIRCUIT INTERRUPTER COMPRISING A PLURALITY OF INTERRUPTING AND PRESSURE-GENERATING CONTACTS CONNECTED IN SERIES CIRCUIT RELATION WHICH OPEN AND CLOSE AT SUBSTANTIALLY THE SAME TIME TO BREAK AND COMPLETE AN ELECTRICAL CIRCUIT, A PRESSURE CHAMBER, SAID PRESSURE-GENERATING CONTACTS BEING DISPOSED TO BREAK AND COMPLETE THE ELECTRICAL CIRCUIT WITHIN SAID PRESSURE CHAMBER AND TO GENERATE A PRESSURE THEREIN, SAID INTERRUPTING CONTACT BEING DISPOSED TO BREAK AND COMPLETE THE ELECTRICAL CIRCUIT EXTERNALLY OF SAID PRESSURE CHAMBER, SAID PRESSURE CHAMBER HAVING OPPOSED SIDE ORIFICE OPENINGS WITH ONE ORIFICE OPEN-
Claim 2
Dependent Claim
86 words
A CIRCUIT INTERRUPTER COMPRISING A PLURALITY OF INTERRUPTING AND PRESSURE-GENERATING CONTACTS CONNECTED IN SERIES CIRCUIT RELATION WHICH OPEN AND CLOSE AT SUBSTANTIALLY THE SAME TIME TO BREAK AND COMPLETE AN ELECTRICAL CIRCUIT, A PRESSURE CHAMBER, SAID PRESSURE-GENERATING CONTACTS BEING DISPOSED TO BREAK AND COMPLETE THE ELECTRICAL CIRCUIT WITHIN SAID PRESSURE CHAMBER AND TO GENERATE A PRESSURE THEREIN, SAID INTERRUPTING CONTACT BEING DISPOSED TO BREAK AND COMPLETE THE ELECTRICAL CIRCUIT EXTERNALLY OF SAID PRESSURE CHAMBER, SAID PRESSURE CHAMBER HAVING OPPOSED SIDE ORIFICE OPENINGS WITH ONE ORIFICE OPEN-
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Cited
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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) | 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 |