US3701926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal fuse for transformer
Assignee: KUHIMAN CORP
•
Filing: 1972-01-20
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Granted: 1972-10-31
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Expires: 1992-01-20
Abstract
Abstract A fuse holder assembly which is particularly adapted to be utilized in conjunction with the protection system for the primary side of a transformer assembly wherein the fuse holder is mounted on a plate, the plate being supported on the face of the transformer casing. The fuse holder extends from the plate through an aperture in the transformer housing such that the fuse is supported below the level of cooling fluid within the transformer housing. The assembly of the present invention is suitable for use in connection with any type of fuse and also the transformer assembly includes a protective cover which encloses the area on which the plate is mounted to render the system tamper-proof.
Inventors
- 👤 Jerry Risk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:46
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/40; H01F27/402; H01F27/404
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
106 words
In a transformer assembly having a housing with a panel, a winding supported in said housing and cooling fluid within the housing for cooling the winding, the improvement comprising a fuse assembly for protecting the winding against an excess electrical condition comprising means defining an opening in the panel above the level of the cooling fluid, closure plate means attached to said opening defining means for closing said opening, a fuse, and bracket means having a ribbon element attached at one end thereof to said plate means, said fuse being supported by the other end of said ribbon element below the level of said cooling fluid.
Claim 2
Dependent Claim
106 words
In a transformer assembly having a housing with a panel, a winding supported in said housing and cooling fluid within the housing for cooling the winding, the improvement comprising a fuse assembly for protecting the winding against an excess electrical condition comprising means defining an opening in the panel above the level of the cooling fluid, closure plate means attached to said opening defining means for closing said opening, a fuse, and bracket means having a ribbon element attached at one end thereof to said plate means, said fuse being supported by the other end of said ribbon element below the level of said cooling fluid.
Claim 3
Dependent Claim
12 words
The improvement of claim 1 wherein said panel is a vertical panel.
Claim 4
Dependent Claim
30 words
The improvement of claim 1 wherein said fuse is removed from said housing when said plate means is detached from said opening defining means and removed therefrom a sufficient distance.
Claim 5
Dependent Claim
24 words
The improvement of claim 3 wherein said fuse includes a conductor attached thereto and is supported relative to said other end by said conductor.
Claim 6
Dependent Claim
39 words
The improvement of claim 4 wherein said bracket assembly includes a further bracket element attached at one end thereof to the other end of said ribbon element and at the other end to said conductor for supporting said fuse.
Claim 7
Dependent Claim
34 words
The improvement of claim 3 wherein said strip element is formed generally in a Z-shape including a central portion, said central portion being of sufficient length to submerge said fuse in the cooling fluid.
Claim 8
Dependent Claim
27 words
The improvement of claim 6 wherein the panel is vertically disposed with said central portion generally parallel thereto, said housing including means for lockably enclosing said panel.
Claim 9
Dependent Claim
28 words
The improvement of claim 7 wherein said central portion provides an indication of the fluid level within the housing upon removal of said central portion from said housing.
Claim 10
Dependent Claim
30 words
The improvement of claim 8 wherein said fuse is removed from said housing when said plate means is detached from said opening defining means and removed therefrom a sufficient distance.
Claim 11
Dependent Claim
24 words
The improvement of claim 9 wherein said fuse includes a conductor attached thereto and is supported relative to said other end by said conductor.
References Cited (Backward Citations)
US3014158A
Cited
US3435291A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-31 | 1976-05-01 | 1976-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-31 | 1980-05-01 | 1980-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-31 | 1984-05-01 | 1984-10-31 | $7700.00 | Window Closed / Lapsed |