US3798583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuse bushing with sealing means providing hotstick changeout of fuse
Assignee: General Electric Co
•
Filing: 1972-06-23
•
Granted: 1974-03-19
•
Expires: 1992-06-23
Abstract
Abstract A fuse bushing for electrical apparatus such as a transformer. The bushing receives a fuse such as a current limiting fuse and is sealed at its outer end. The sealing means includes a cover with an O-ring gasket, the cover having a member extending into the bushing which is connected to the outer end of the fuse. A contact plate is provided fitting over the cover and having two captive eyebolts which are threaded into the flange mounted on the end of the bushing. The eyebolts may be operated by a hotline tool and when tightened into the flange cause the contact plate to contact the cover, firmly holding such cover into the bushing thereby sealing the bushing by the O-ring. A vent device is provided in the cover for direct venting of fuse gases on operation of the fuse.
Inventors
- 👤 A Charbonneau
- 👤 G Conway
- 👤 H Hucko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:24
CPC Classifications
H; H01; H01H; H01H85/00; H01H85/54
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
107 words
A sealed fuse bushing for an electrical apparatus comprising a bushing member, an internal contact on the internal end of said bushing, a flange secured to the outer end of said bushing, a cover member, a fuse removably secured at one end to said cover and extending into said bushing, a contact on the other end of said fuse, said fuse contact making an electrical connection to said internal contact of said bushing, a contact plate, means removably securing said contact plate to said flange and holding said cover against said flange, and sealing means on said cover between said cover and said flange sealing said bushing.
Claim 2
Dependent Claim
107 words
A sealed fuse bushing for an electrical apparatus comprising a bushing member, an internal contact on the internal end of said bushing, a flange secured to the outer end of said bushing, a cover member, a fuse removably secured at one end to said cover and extending into said bushing, a contact on the other end of said fuse, said fuse contact making an electrical connection to said internal contact of said bushing, a contact plate, means removably securing said contact plate to said flange and holding said cover against said flange, and sealing means on said cover between said cover and said flange sealing said bushing.
Claim 3
Dependent Claim
34 words
A sealed fuse bushing as set forth in claim 1 in which said sealing means on said cover is an O-ring fitting in a groove on said cover and firmly seated against said flange.
Claim 4
Dependent Claim
31 words
A sealed fuse bushing as set forth in claim 2 in which said flange is provided with a beveled edge and said O-ring on said cover seals against said beveled edge.
Claim 5
Dependent Claim
41 words
A sealed fuse bushing as set forth in claim 1 in which said means securing said contact plate to said flange comprises a pair of captive eyebolts mounted in said contact plate, said eyebolts being threaded into openings in said flange.
Claim 6
Dependent Claim
47 words
A sealed fuse bushing as set forth in claim 1 in which said cover member is provided with an eye member, said eye member extending through an opening in said contact plate, said eye memBer adapted to receive hotline tools for removing said cover from said bushing.
Claim 7
Dependent Claim
73 words
A sealed fuse bushing as set forth in claim 1 in which said means removably securing said fuse to said cover is a hollow extension member attached to said cover and to said fuse, said hollow extension member being provided on the outer end with an automatic pressure relief device which opens to allow any gases built up in said bushing to pass through said cover, said automatic pressure relief device then resealing.
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) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |