Patent US3073993A successfully refreshed from Google Patents.
US3073993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Completely protected transformer
Assignee: Westinghouse Electric Corp
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Filing: 1958-11-12
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Granted: 1963-01-15
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Expires: 1978-11-12
Abstract
No abstract record available.
Inventors
- 👤 Merrill G Leonard
- 👤 Jr John J Astleford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:35
CPC Classifications
H; H01; H01H; H01H85/00; H01H85/02; H01H85/44; H01F; H01F27/00; H01F27/40; H01F27/402; H01T; H01T1/00; H01T1/02; H01T1/08; H01T1/10; H02; H02H; H02H7/00; H02H7/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
125 words
A FUSIBLE DEVICE INCLUDING A RELATIVELY STATIONARY SUPPORT BRACKET HAVING A HINGE PORTION ASSOCIATED THEREWITH, A ROTATABLE ASSEMBLY PIVOTALLY MOUNTED TO SAID HINGE PORTION INCLUDING A WEATHER SHIELD AND A FUSE SUPPORT ARM, AN OPENING BIASING SPRING AT LEAST PARTIALLY ENCLOSED BY SAID WEATHER SHIELD AND BIASING SAID ROTATABLE ASSEMBLY IN AN OPENING DIRECTION AROUND SAID HINGE PORTION, A FUSE LINK HAVING A FUSE-LINK CABLE, SAID FUSE -LINK CABLE BEING TENSIONED BY THE OUTER FREE END OF SAID FUSE SUPPORT ARM, AND ENERGY-ABSORBING STOP MEANS INCLUDING A FRICTIONAL ENGAGEMENT BETWEEN SAID ROTATABLE ASSEMBLY AND SAID RELATIVELY STATIONARY SUPPORT BRACKET TO PREVENT REBOUND OF THE OUTER FREE END OF SAID FUSE SUPPORT ARM BACK INTO THE REGION OF CONDUCTING GASES DURING BLOWING OF SAID FUSE LINK.
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) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |