US3278712A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal-clad compressed-fluid switchgear constructions and fluid couplings therefor
Assignee: Mitsubishi Electric Corp
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Filing: 1963-12-30
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Granted: 1966-10-11
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Expires: 1983-12-30
Abstract
No abstract record available.
Inventors
- 👤 Tominaga Shotaro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:02
CPC Classifications
H; H02; H02B; H02B11/00; H02B11/12; H02B11/167; H02B11/02; H02B11/04; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87917; Y10T137/87925
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
92 words
IN COMBINATION, A SWITCHGEAR CELL HAVING A SOURCE OF FLUID UNDER PRESSURE ASSOCIATED THEREWITH, A STATIONARY FLUID-CONDUIT MEANS CONNECTED TO SAID SOURCE AND AT LEAST ONE PAIR OF DISCONNECTING CONTACTS ASSOCIATED WITH THE SWITCHGEAR CELL, A CIRCUIT-BREAKER UNIT INCLUDING A MOVABLE FRAME MOVABLE INTO AND OUT OF SAID SWITCHGEAR CELL TO TEST AND OPERATING POSITIONS, THE MOVABLE FRAME OF THE CIRCUIT-BREAKER UNIT CARRYING A FLUID RESERVOIR CHAMBER THEREWITH, MOVABLE COOPERABLE CONDUIT MEANS MOVABLE WITH SAID FRAME AND ADAPTED FOR AUTOMATIC REGISTRATION WITH THE FIRST SAID CONDUIT MEANS UPON MOVEMENT OF THE CIRCUIT-
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) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |