Flexible blown fuse indicator

H - Electricity – 01 – H

Patent

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Details

H01H 85/30 (2006.01)

Patent

CA 2243335

A device for providing a visual indication of the status of a fuse, i.e., whether or not the fuse has blown. The device includes a substrate onto which the elements of the visual indication device are printed. A pair of conductive terminals is screen printed upon that substrate, preferably spaced apart from each other along that substrate. Between the terminals, at least two spaced apart resistance elements are positioned upon the substrate. These two resistance elements are in series with each other, and they are also in series with the pair of conductive terminals. The first of these at least two resistance elements is comprised of a combination of a substance which melts at an elevated temperature, and also of carbon. The second of these at least two resistance elements is comprised solely of carbon.

Un dispositif permettant d'indiquer visuellement l'état d'un fusible, à savoir, si un fusible a fondu ou non. Le dispositif comprend un substrat sur lequel sont imprimés les éléments de l'indicateur visuel. Deux bornes conductrices sont imprimées sur le cadre de ce substrat, de préférence espacées l'une de l'autre le long de ce substrat. Entre les bornes, au moins deux éléments à résistance espacés entre eux sont placés sur le substrat. Ces deux éléments à résistance se trouvent en série l'un avec l'autre tout en étant également en série avec les deux bornes conductrices. Le premier d'au moins deux éléments à résistance est composé d'une combinaison d'une substance qui fond à une température élevée, ainsi que de carbone. Le deuxième d'au moins deux éléments à résistance est composé uniquement de carbone

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