US3781745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fused coupler assembly
Assignee: Joslyn Corp
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Filing: 1969-09-10
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Granted: 1973-12-25
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Expires: 1989-09-10
Abstract
Abstract A fused coupler assembly includes a submersible conductive housing used in underground distribution systems. The housing contains a dielectric filler in which a cylindrical resistor shield encompassing a fuse element is located. The cylindrical shield is formed of a tube coated with a resistance material so that a shield is formed of sufficiently low resistance to prevent corona from occurring between the tube and the fuse element. The coating shield also is of sufficiently high resistance to minimize line-to-ground leakage when the fuse element is blown during a fault condition.
Inventors
- 👤 R Vadnagara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:55
CPC Classifications
H; H01; H01H; H01H85/00; H01H85/02; H01H85/04; H01H85/041; H01H85/042; H01H2085/0225
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A fused coupler assembly for use in an underground distribution system comprising: a conductive grounding housing, a cylindrical tube defining a tube cartridge within said housing, a fuse element disposed within said tube, a coating helically wound on said tube, said coating being connected to line potential at least at one end and being of sufficiently low resistance to prevent corona occurring between said tube and said fuse element; and a dielectric filler in the space between said tube and said housing, said filler being in void-free interfacial engagement with said tube and said housing.
Claim 2
Dependent Claim
95 words
A fused coupler assembly for use in an underground distribution system comprising: a conductive grounding housing, a cylindrical tube defining a tube cartridge within said housing, a fuse element disposed within said tube, a coating helically wound on said tube, said coating being connected to line potential at least at one end and being of sufficiently low resistance to prevent corona occurring between said tube and said fuse element; and a dielectric filler in the space between said tube and said housing, said filler being in void-free interfacial engagement with said tube and said housing.
References Cited (Backward Citations)
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Cited
US2216661A
Cited
US2660644A
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US2844691A
Cited
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Cited
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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) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |