Cigar lighter with ptc thermal protection

F - Mech Eng,Light,Heat,Weapons – 23 – Q

Patent

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Details

F23Q 7/24 (2006.01) B60N 3/14 (2006.01)

Patent

CA 2336792

An electric cigar lighter includes a receptacle (10) for receiving and energizing an igniting unit of an automatic electric cigar lighter, the receptacle (10) having a pair of circuits having respectively a grounding contact and a polarizing contact (14) both of which are engageable with the igniting unit to carry current thereto, and a heat-responsive device comprising a solid state positive temperature coefficient resistor (40) disposed in series in one of the circuits, the resistor (40) being adapted to receive heat from the igniting unit for limiting the current in the one circuit when the resistor (40) attains a predetermined high temperature.

Un allume-cigares électrique comprend une douille (10) destinée à recevoir et à alimenter une unité d'allumage d'un allume-cigares automatique électrique, la douille (10) ayant une paire de circuits présentant respectivement un contact de mise à la terre et un contact polarisant (14) avec lesquels l'unité d'allumage vient en contact afin de lui transmettre du courant, et un dispositif thermosensible comprenant une résistance (40) à semi-conducteur à coefficient de température positif, disposée en série dans un des circuits, la résistance (40) étant adaptée pour recevoir la chaleur de l'unité d'allumage afin de limiter le courant dans le circuit lorsque la résistance (40) atteint une température élevée prédéterminée.

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