Patent US3870984A successfully refreshed from Google Patents.
US3870984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-voltage fuse with plugs of sheet metal
Assignee: GOLUD INC A DE CORP
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Filing: 1974-02-20
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Granted: 1975-03-11
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Expires: 1994-02-20
Abstract
Abstract A fuse for elevated circuit voltages having substantially helically wound fusible element means supported by a plurality of angularly displaced rods of electric insulating material. The casing of the fuse is closed by hollow plugs of sheet metal and the rods for supporting the fusible element means are supported by sheet metal supports affixed to the end surfaces of said hollow plugs.
Inventors
- 👤 Erwin Salzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:08
CPC Classifications
H; H01; H01H; H01H85/00; H01H85/02; H01H85/04; H01H85/041; H01H85/042
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
145 words
An electric fuse including a. a tubular casing of electric insulating material; b. substantially helically wound fusible element means in ribbon form arranged inside of and in coaxial relation to said casing; c. a pulverulent arc-quenching filler inside said casing embedding said fusible element means; d. a plurality of separate angularly displaced rods of electric insulating material arranged parallel to the axis of said casing supporting said fusible element means; e. a pair of hollow plugs of sheet metal closing the ends of said casing, said pair of plugs having end surfaces and having lateral surfaces engaging the inner surface of said casing and being provided with a sealing-medium-containing groove means; and f. a plurality of sheet metal supports for said plurality of rods affixed to said end surfaces of said pair of hollow plugs and engaged by the ends of said plurality of rods.
Claim 2
Dependent Claim
145 words
An electric fuse including a. a tubular casing of electric insulating material; b. substantially helically wound fusible element means in ribbon form arranged inside of and in coaxial relation to said casing; c. a pulverulent arc-quenching filler inside said casing embedding said fusible element means; d. a plurality of separate angularly displaced rods of electric insulating material arranged parallel to the axis of said casing supporting said fusible element means; e. a pair of hollow plugs of sheet metal closing the ends of said casing, said pair of plugs having end surfaces and having lateral surfaces engaging the inner surface of said casing and being provided with a sealing-medium-containing groove means; and f. a plurality of sheet metal supports for said plurality of rods affixed to said end surfaces of said pair of hollow plugs and engaged by the ends of said plurality of rods.
Claim 3
Dependent Claim
145 words
An electric fuse including a. a tubular casing of electric insulating material; b. substantially helically wound fusible element means in ribbon form arranged inside of and in coaxial relation to said casing; c. a pulverulent arc-quenching filler inside said casing embedding said fusible element means; d. a plurality of separate angularly displaced rods of electric insulating material arranged parallel to the axis of said casing supporting said fusible element means; e. a pair of hollow plugs of sheet metal closing the ends of said casing, said pair of plugs having end surfaces and having lateral surfaces engaging the inner surface of said casing and being provided with a sealing-medium-containing groove means; and f. a plurality of sheet metal supports for said plurality of rods affixed to said end surfaces of said pair of hollow plugs and engaged by the ends of said plurality of rods.
Claim 4
Dependent Claim
145 words
An electric fuse including a. a tubular casing of electric insulating material; b. substantially helically wound fusible element means in ribbon form arranged inside of and in coaxial relation to said casing; c. a pulverulent arc-quenching filler inside said casing embedding said fusible element means; d. a plurality of separate angularly displaced rods of electric insulating material arranged parallel to the axis of said casing supporting said fusible element means; e. a pair of hollow plugs of sheet metal closing the ends of said casing, said pair of plugs having end surfaces and having lateral surfaces engaging the inner surface of said casing and being provided with a sealing-medium-containing groove means; and f. a plurality of sheet metal supports for said plurality of rods affixed to said end surfaces of said pair of hollow plugs and engaged by the ends of said plurality of rods.
Claim 5
Dependent Claim
41 words
An electric fuse as specified in claim 1 including pins projecting through said casing and through said lateral surface of one of said pair of hollow plugs into one of said plurality of sheet metal supports for said plurality of rods.
Claim 6
Dependent Claim
67 words
An electric fuse as specified in claim 1 wherein each of said lateral surfaces of said pair of hollow plugs is provided with a pair of grooves and wherein said casing is affixed to said pair of hollow plugs by pins arranged between said pair of grooves and having radially inner ends projecting into one of said plurality of sheet metal supports for said plurality of rods.
Claim 7
Dependent Claim
38 words
An electric fuse as specified in claim 1 wherein each of the ends of said fusible element means is affixed to and conductively connected with one of said plurality of sheet metal supports for said plurality of rods.
Claim 8
Dependent Claim
59 words
An electric fuse as specified in claim 1 wherein said plurality of sheet metal supports for said plurality of rods is formed by a plurality of flanged tubular elements affixed with the flanged axially outer ends thereof to said end surfaces of said hollow plugs and being engaged at the axially inner ends thereof by said plurality of rods.
References Cited (Backward Citations)
US3680019A
Cited
US3810061A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |