Patent ID: 6332739
Filing Date: 2001-12-25
Classification: A21C

Abstract:
A powder supply unit connected to a powder source for supplying powders to a processing device comprising:a powder reservoir for temporarily storing powders therein, the powder reservoir having a lower end and an upper end;a powder supplying portion connected between the lower end and the processing device;an auxiliary tank connected to the upper end, the auxiliary tank having an upper portion and a lower portion;a powder inlet conduit connected to a first end of the upper portion of the auxiliary tank for introducing powders into the auxiliary tank;a powder outlet conduit connected to a second end of the upper portion of the auxiliary tank, said second end being different from said first end, for discharging the powders from the auxiliary tank,wherein the powder inlet conduit and the powder outlet conduit are arrayed in line in one direction; anda valve provided at the lower portion of the auxiliary tank and movable between a close position for accumulating the powders in the auxiliary tank and an open position for dropping the powders in the auxiliary tank into the powder reservoir.