Patent US4834257A successfully refreshed from Google Patents.
US4834257A
Expired / Lapsed
US
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Reinforced wall structure for a transformer tank
Assignee: ABB Inc USA
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Filing: 1987-12-11
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Granted: 1989-05-30
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Expires: 2007-12-11
Abstract
Abstract A reinforced wall structure for a transformer tank characterized by a tank having opposite tank walls and braces on the walls for stiffening the walls against deflection. A transformer assembly including a transformer mounting end frame and a transformer within the end frame is mounted in the tank with the end frames adjacent to the braces so as to limit lateral movement of the assembly when an overcurrent condition occurs. A cooling fin assembly is mounted on each tank wall on the side opposite the braces.
Inventors
- 👤 William J. Book
- 👤 John W. Hatfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:09
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
113 words
A reinforced wall structure for a transformer tank, comprising: (a) a tank having opposite tank walls; (b) brace means including rigid channels on at least one wall stiffening the wall against deflection; (c) a transformer assembly within the tank and extending substantially between the brace means on one or more of the opposite walls; said transformer assembly including a transformer mounting frame and the frame including opposite end frame members adjacent to the rigid channels; and (d) packing material between the frame members and the rigid channels to prevent initial movement of the transformer assembly, whereby any expansion of the transformer assembly toward the opposite tank walls is limited by the brace means.
Claim 2
Dependent Claim
113 words
A reinforced wall structure for a transformer tank, comprising: (a) a tank having opposite tank walls; (b) brace means including rigid channels on at least one wall stiffening the wall against deflection; (c) a transformer assembly within the tank and extending substantially between the brace means on one or more of the opposite walls; said transformer assembly including a transformer mounting frame and the frame including opposite end frame members adjacent to the rigid channels; and (d) packing material between the frame members and the rigid channels to prevent initial movement of the transformer assembly, whereby any expansion of the transformer assembly toward the opposite tank walls is limited by the brace means.
Claim 3
Dependent Claim
16 words
The structure of claim 1 in which the brace means are mounted on both end walls.
Claim 4
Dependent Claim
13 words
The structure of claim 1 in which the rigid channels are horizontally disposed.
Claim 5
Dependent Claim
29 words
The structure of claim 1 in which a cooling fin assembly is mounted on the side of the walls opposite the rigid channels so as to reinforce the walls.
Claim 6
Dependent Claim
29 words
The structure of claim 1 in which the rigid channels are welded in place on their respective walls and the end frame members are bolted onto the rigid channels.
References Cited (Backward Citations)
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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) | 1992-05-29 | 1992-11-28 | 1993-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-29 | 1996-11-28 | 1997-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-29 | 2000-11-28 | 2001-05-30 | $7700.00 | Window Closed / Lapsed |