초록 ▼

A furnace is provided generally including an upper heating chamber and a lower work base or firing platform. The upper chamber provides the main source of heat to the materials to be heat-treated. The upper chamber contains a muffle within which is located a heater ring assembly. The heater ring ass

A furnace is provided generally including an upper heating chamber and a lower work base or firing platform. The upper chamber provides the main source of heat to the materials to be heat-treated. The upper chamber contains a muffle within which is located a heater ring assembly. The heater ring assembly is located in the middle to upper half of the muffle and includes an annular heating element that is located between an outer insulation ring and an inner quartz sleeve. A cavity or channel extends through the muffle into which insulation materials and the heater ring assembly is located. The channel area in the muffle below the heater ring assembly allows for the placement of the firing platform therein. The firing platform includes insulation material and a heating element located in the upper portion thereof. The heating element located in the firing platform provides heat to the firing platform such that when the firing platform is positioned within the muffle channel, heat is more evenly distributed throughout the heating area.

대표청구항 ▼

[ What is claimed is:] [1.]1. A furnace for heating a dental material comprising:an upper chamber having an upper heating element therein; anda movable work base having a lower heating element therein:a linear rail;a movable bracket coupled to the linear rail and movable vertically along the rail;a

[ What is claimed is:] [1.]1. A furnace for heating a dental material comprising:an upper chamber having an upper heating element therein; anda movable work base having a lower heating element therein:a linear rail;a movable bracket coupled to the linear rail and movable vertically along the rail;a platform bar coupled to the bracket;a work base plate disposed on the platform bar for holding the work base;a linear conductor assembly; anda brush holder assembly coupled to the platform bar, movable in the vertical direction, in contact with the linear conductor assembly, and linked to the heating elements.