US3275778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compressed-gas circuit interrupter with pressurized arcing chamber and downstream blast valve
Assignee: Mitsubishi Electric Corp
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Filing: 1963-07-31
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Granted: 1966-09-27
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Expires: 1983-07-31
Abstract
No abstract record available.
Inventors
- 👤 Morioka Shoji
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:35
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/70; H01H33/86; H01H3/00; H01H3/32; H01H3/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
IN A COMPRESSED-GAS CIRCUIT INTERRUPTER, IN COMBINATION, MEANS DEFINING AN ARCING CHAMBER CONTAINING GAS UNDER HIGH PRESSURE, SEPARABLE CONTACT MEANS INCLUDING A MOVABLE VENTING TUBULAR CONTACT DISPOSED THEREIN AND SEPARABLE TO ESTABLISH AN ARC, MEANS DEFINING A DOWNSTREAM BLAST-VALVE FOR VENTING THE ARCING CHAMBER THROUGH SAID MOVABLE VENTING TUBULAR CONTACT, UNRESTRICTED PASSAGE MEANS CONNECTING THE INTERIOR OF SAID PRESSURIZED ARCING CHAMBER THROUGH SAID MOVABLE VENTING TUBULAR CONTACT WITH SAID DOWNSTREAM BLAST-VALVE, AND MEANS SYNCHRONIZING OPENING OF THE DOWNSTREAM BLAST-VALVE WITH SEPARATION OF THE SEPARABLE CONTACT STRUCTURE WHEREBY AN IMME-
Claim 2
Dependent Claim
89 words
IN A COMPRESSED-GAS CIRCUIT INTERRUPTER, IN COMBINATION, MEANS DEFINING AN ARCING CHAMBER CONTAINING GAS UNDER HIGH PRESSURE, SEPARABLE CONTACT MEANS INCLUDING A MOVABLE VENTING TUBULAR CONTACT DISPOSED THEREIN AND SEPARABLE TO ESTABLISH AN ARC, MEANS DEFINING A DOWNSTREAM BLAST-VALVE FOR VENTING THE ARCING CHAMBER THROUGH SAID MOVABLE VENTING TUBULAR CONTACT, UNRESTRICTED PASSAGE MEANS CONNECTING THE INTERIOR OF SAID PRESSURIZED ARCING CHAMBER THROUGH SAID MOVABLE VENTING TUBULAR CONTACT WITH SAID DOWNSTREAM BLAST-VALVE, AND MEANS SYNCHRONIZING OPENING OF THE DOWNSTREAM BLAST-VALVE WITH SEPARATION OF THE SEPARABLE CONTACT STRUCTURE WHEREBY AN IMME-
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) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |