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US3603909A
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Multi-fuse-link high-voltage fuse having a link-supporting mandrel and means for equalizing the interrupting duty of the fuse links
Assignee: GOLUD INC A DE CORP
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Filing: 1970-07-06
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Granted: 1971-09-07
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Expires: 1990-07-06
Abstract
Abstract A high-voltage fuse of the kind wherein a plurality of ribbon fuse links are wound around a mandrel structure in helical paths. The fuse further includes a pair of axially spaced auxiliary conductors wound around the mandrel structure adjacent the center region thereof and intersecting each of said plurality of fuse links at a predetermined acute angle. The pair of auxiliary conductors intersect said plurality of fuse links preferably at points where the latter are supported by said mandrel structure, and spot welds located at these points establish connections between said pair of auxiliary conductors and said plurality of fuse links.
Inventors
- 👤 Erwin Salzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:55
CPC Classifications
H; H01; H01H; H01H85/00; H01H85/02; H01H85/04; H01H85/05; H01H85/055
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
172 words
An electric high-voltage fuse including in combination a. a tubular casing of insulating material; b. a pair of metallic terminal elements closing the ends of said casing; c. an elongated fuse-link-supporting mandrel structure of insulating material inside said casing arranged in a direction longitudinally thereof and having radial ribs including radially outer edges extending parallel to the axis of said casing; d. a plurality of ribbon fuse links conductively interconnecting said pair of terminal elements, wound around said mandrel structure in substantially helical angularly displaced paths and supported at spaced discrete points thereof by said radially outer edges of said radial ribs of said mandrel structure, each of said plurality of fuse links having a pair of axially outer sections provided with serially related relatively short neck portions and an axially inner section forming a relatively long neck portion; and e. a pair of axially spaced auxiliary conductors wound around said mandrel structure adjacent the center region thereof and intersecting each of said plurality of fuse links at a predetermined acute angle.
Claim 2
Dependent Claim
172 words
An electric high-voltage fuse including in combination a. a tubular casing of insulating material; b. a pair of metallic terminal elements closing the ends of said casing; c. an elongated fuse-link-supporting mandrel structure of insulating material inside said casing arranged in a direction longitudinally thereof and having radial ribs including radially outer edges extending parallel to the axis of said casing; d. a plurality of ribbon fuse links conductively interconnecting said pair of terminal elements, wound around said mandrel structure in substantially helical angularly displaced paths and supported at spaced discrete points thereof by said radially outer edges of said radial ribs of said mandrel structure, each of said plurality of fuse links having a pair of axially outer sections provided with serially related relatively short neck portions and an axially inner section forming a relatively long neck portion; and e. a pair of axially spaced auxiliary conductors wound around said mandrel structure adjacent the center region thereof and intersecting each of said plurality of fuse links at a predetermined acute angle.
Claim 3
Dependent Claim
61 words
An electric high-voltage fuse as specified in claim 1 wherein said pair of auxiliary conductors and said plurality of fuse links are joined by spotwelds located at points where said pair of auxiliary conductors intersect said plurality of fuse links and said plurality of fuse links are supported by said radially outer edges of said radial ribs of said mandrel structure.
Claim 4
Dependent Claim
20 words
A high-voltage fuse as specified in claim 1 wherein said pair of auxiliary conductors is formed by round silver wires.
Claim 5
Dependent Claim
124 words
An electric high-voltage fuse as specified in claim 1 wherein a. said pair of axially outer sections of each of said plurality of fuse links is formed by silver ribbons having serially related circular perforations; wherein b. said relatively long neck portion of each of said plurality of fuse links is formed by a length of round silver wire spotwelded at the axially outer ends thereof to the axially inner ends of said pair of axially outer sections of each of said plurality of fuse links; and wherein c. said pair of auxiliary conductors is formed by a pair of round silver wires spotwelded to said plurality of fuse links at points where said pair of auxiliary conductors intersect said plurality of fuse links.
Claim 6
Dependent Claim
97 words
A high-voltage fuse as specified in claim 3 wherein a. said length of round silver wire forming said relatively long neck portion of each of said plurality of fuse links is provided with a pair of link-severing low fusing point overlays each adjacent to one of the axially outer ends of said length of silver wire; and wherein b. said pair of round silver wires forming said pair of auxiliary conductors intersect with said plurality of fuse links at points positioned axially outwardly from said pair of link-severing overlays of each of said plurality of fuse links.
Claim 7
Dependent Claim
43 words
A high-voltage fuse as specified in claim 3 wherein a link-severing low fusing point overlay is arranged on said relatively long neck portion of each of said plurality of fuse links between the points of intersection thereof with said pair of auxiliary conductors.
Claim 8
Dependent Claim
81 words
A high-voltage fuse as specified in claim 1 wherein said pair of auxiliary conductors is arranged in a pair of planes at right angles to said mandrel structure and intersects said plurality of fuse links at points where said plurality of fuse links is supported by said radially outer edges of said radial ribs of said mandrel structure, and wherein spotwelds located at these points of intersection establish connections between said pair of auxiliary conductors and said plurality of fuse links.
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) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |