Patent US3157730A successfully refreshed from Google Patents.
US3157730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilated protective enclosure for surface mounted transformers
Assignee: Individual
•
Filing: 1961-12-14
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Granted: 1964-11-17
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Expires: 1981-12-14
Abstract
No abstract record available.
Inventors
- 👤 Willox J Hebden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:49
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/02; H01F27/025
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
130 words
IN COMBINATION WITH A PROTECTIVE ENCLOSURE FOR A TRANSFORMER TO BE SURFACE MOUNTED, A SUPPORTING BASE COMPRISING AN UPPER OVERHANGING SILL PORTION IN CONTACT WITH THE GROUND AND PROVIDING AN UPPER MEMBER HAVING A HORIZONTAL FLAT UPPER WALL SURFACE FOR SUPPORTING THE ENCLOSURE AND HAVING AN OUTER LEG MEMBER INTEGRALLY FORMED ON THE PERIPHERY OF THE UPPER MEMBER, AND EXTENDING DOWNWARDLY THEREFROM AT RIGHT ANGLES TO PENETRATE THE GROUND A SUBSTANTIAL DISTANCE FOR ENGAGEMENT WITH THE GROUND, A PLURALITY OF OPENINGS THROUGH SAID UPPER MEMBER ADJACENT THE PERIPHERY THEREOF WITHIN SAID OUTER LEG MEMBER FOR THE PASSAGE OF UNDERGROUND CABLES FROM BENEATH INTO THE ENCLOSURE, AND A DOWNWARDLY EXTENDING WELL PORTION INTEGRALLY FORMED WITH AND CENTRALLY LOCATED WITHIN THE UPPER MEMBER FOR RECEIPT OF THE LOWER PORTION OF THE TRANSFORMER.
References Cited (Backward Citations)
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US2024742A
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US2158868A
Cited
US2354078A
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US2717275A
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US3014158A
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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) | 1967-11-17 | 1968-05-18 | 1968-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-17 | 1972-05-18 | 1972-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-17 | 1976-05-18 | 1976-11-17 | $7700.00 | Window Closed / Lapsed |