Pyrolytic boron nitride heating unit

H - Electricity – 05 – B

Patent

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Details

H05B 3/14 (2006.01) H05B 3/06 (2006.01) H05B 3/08 (2006.01)

Patent

CA 2141340

The present invention relates to a pyrolytic boron nitride heating unit composed of a dielectric base of boron nitride and a pyrolytic graphite heating element having contact ends for connection to an external power supply through a contact assembly comprising graphite posts connected to the contact ends with each post having a pyrolytic boron nitride coating and exposed attachment ends spaced a predetermined minimum distance from the contact ends for connection to the power supply. The contact assembly preferably also includes flexible graphite washers for connection between the contact ends and the graphite posts.

La présente invention consiste en une unité chauffante qui emploie de la nitrure de bore pyrolytique, et un élément de chauffe pyrolytique en graphite muni de bouts de contact destinés à être connectés à une source d'alimentation électrique par un assemblage de contact comprenant des bornes de graphite connectées aux bouts de contact et où chaque borne comporte un revêtement de nitrure de bore pyrolytique et des extrémités de connections exposées espacées à une distance minimale prédéterminée des bouts de contact, pour connection à la source d'alimentation. L'assemblage de contact comprendra idéalement des rondelles flexibles en graphite pour connection entre les bouts de contact et les bornes en graphite.

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