Shielded magnetic reed switch

H - Electricity – 01 – H

Patent

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Details

H01H 36/00 (2006.01) A61M 25/01 (2006.01) H01H 1/64 (2006.01) A61J 15/00 (2006.01)

Patent

CA 2371495

A shielded magnetic reed switch provides a magnetic reed switch disposed within a ferrous metal housing so that the ferrous metal housing shields the magnetic reed switch from magnetic flux. The shielded magnetic reed switch of the present invention remains unactuated until the ferrous metal housing is fully saturated and the magnetic flux required to actuate the magnetic reed switch is available within the ferrous metal housing. The present invention further provides a sensor for detecting the presence of an approaching magnetic field source at a predetermined distance between the shielded magnetic reed switch and the approaching magnetic field source.

La présente invention concerne un interrupteur a lames souples protégé, constitué d'un interrupteur à lames souples placé dans un logement en métal ferreux de manière à ce que ce logement métallique protège l'interrupteur contre un flux magnétique. L'interrupteur à lames souples protégé de la présente invention reste insensible jusqu'à ce que le logement en métal ferreux soit complètement saturé et que le flux magnétique nécessaire au fonctionnement de l'interrupteur soit présent dans le logement. L'invention concerne aussi un capteur permettant de détecter la présence d'une source de champ magnétique approchante à une distance prédéterminée entre l'interrupteur et la source de champ magnétique.

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