Patent US2273017A successfully refreshed from Google Patents.
US3236984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High voltage circuit switching device
Assignee: S&C Electric Co
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Filing: 1962-11-13
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Granted: 1966-02-22
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Expires: 1982-11-13
Abstract
No abstract record available.
Inventors
- 👤 Sigurd I Lindell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:12
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/70; H01H33/76
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
IN AN UNDERGROUND HIGH VOLTAGE ELECTRIC POWER DISTRIBUTION SYSTEM INCLUDING A PAIR OF BURIED INSULATED CONDUCTORS HAVING ONE END OF EACH IN CLOSE PROXIMITY, IN COMBINATION: (A) AN ACCESS TUBE FOR EXTENDING UPWARDLY FROM THE VICINITY OF SAID ENDS OF SAID CONDUCTORS TO GROUND LEVEL, (B) A METALLIC HOUSING HAVING A SEALED CONNECTION TO THE LOWER END OF SAID ACCESS TUBE, (C) UPPER AND LOWER TERMINALS IN SAID METALLIC HOUSING IN INSULATED SPACED RELATION AND ALIGNED WITH SAID ACCESS TUBE, (D) MEANS FOR CONNECTING SAID UPPER AND LOWER TERMINALS TO SAID ENDS OF SAID BURIED INSULATED CONDUCTORS, RESPECTIVELY, (E) CONNECTING CONDUCTOR MEANS WITHIN SAID METALLIC HOUSING DETACHABLY INTERCONNECTING SAID UPPER AND LOWER TERMINALS, AND
Claim 2
Dependent Claim
114 words
IN AN UNDERGROUND HIGH VOLTAGE ELECTRIC POWER DISTRIBUTION SYSTEM INCLUDING A PAIR OF BURIED INSULATED CONDUCTORS HAVING ONE END OF EACH IN CLOSE PROXIMITY, IN COMBINATION: (A) AN ACCESS TUBE FOR EXTENDING UPWARDLY FROM THE VICINITY OF SAID ENDS OF SAID CONDUCTORS TO GROUND LEVEL, (B) A METALLIC HOUSING HAVING A SEALED CONNECTION TO THE LOWER END OF SAID ACCESS TUBE, (C) UPPER AND LOWER TERMINALS IN SAID METALLIC HOUSING IN INSULATED SPACED RELATION AND ALIGNED WITH SAID ACCESS TUBE, (D) MEANS FOR CONNECTING SAID UPPER AND LOWER TERMINALS TO SAID ENDS OF SAID BURIED INSULATED CONDUCTORS, RESPECTIVELY, (E) CONNECTING CONDUCTOR MEANS WITHIN SAID METALLIC HOUSING DETACHABLY INTERCONNECTING SAID UPPER AND LOWER TERMINALS, AND
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) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |