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1. (WO1992010846) BINARY FUSE DEVICE
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1992/010846 International Application No.: PCT/US1991/009238
Publication Date: 25.06.1992 International Filing Date: 09.12.1991
Chapter 2 Demand Filed: 09.06.1992
IPC:
H01H 85/055 (2006.01) ,H01H 85/06 (2006.01)
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
H
ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
85
Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
02
Details
04
Fuses, i.e. expendable parts of the protective device, e.g. cartridges
05
Component parts thereof
055
Fusible members
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
H
ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
85
Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
02
Details
04
Fuses, i.e. expendable parts of the protective device, e.g. cartridges
05
Component parts thereof
055
Fusible members
06
characterised by the fusible material
Applicants:
AVX CORPORATION [US/US]; 750 Lexington Avenue New YorK, NY 10022, US
Inventors:
SALISBURY, Ian; GB
Agent:
SUTTON, BASSECHES, MAGIDOFF & AMARAL; 420 lexington Avenue New York, NY 10170, US
Priority Data:
623,59407.12.1990US
Title (EN) BINARY FUSE DEVICE
(FR) DISPOSITIF DE FUSIBLE BINAIRE
Abstract:
(EN) A binary electrical fuse (13) is comprised of a core wire (20) which is preferably relatively rigid, has a high ohmic resistance, and a high melt temperature. The core wire is clad with a metal (21) of substantially less rigidity having a low ohmic resistivity, and low melt temperature, i.e. in the range of from about 230 degrees C to 700 degrees C. The resistance of the core wire is at least about ten times the resistance of the cladding and preferably twenty or more times the resistance of the cladding. In the course of a fusing cycle the cladding metal will melt and pool, leaving the core wire as the sole conductor resulting in a rapid blow of the fuse due to the sudden high resistance load presented by the core wire.
(FR) Fusible électrique binaire (13) constitué d'un fil d'âme (20) de préférence relativement rigide, présentant une forte résistance ohmique et une température élevée de fusion. Le fil d'âme est recouvert d'un métal (21) sensiblement moins dur ayant une faible résistivité ohmique et une faible température de fusion se situant dans la plage comprise entre environ 230 °C et 700 °C. La résistance du fil d'âme est égale à environ dix fois la résistance du revêtement et de préférence elle est au moins vingt fois supérieure à la résistance du revêtement. Lors du claquage d'un fusible, le matériau de revêtement se liquéfie et fond, le fil d'âme devenant alors l'unique conducteur ce qui provoque le claquage rapide du fusible qui est soumis à la forte et subite décharge de résistance que connaît le fil d'âme.
Designated States: European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, MC, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0560908