Patent Number: 6,332,739

Title: Powder supply system and powder supplying unit used in the system

Abstract: A powder supply system including a powder replenishment device as a powdersource, a suction device and a plurality of powder supply units connectedin series. Each of the powder supply units sprinkles powders toward anobject mounted on each processing device. An upstream end powder supplyunit is fluidly connected to the powder replenishment device, and adownstream end powder supply unit is fluidly connected to the suctiondevice. A suction force generated by the suction device sucks powders fromthe powder replenishment device through the powder supply units, andpowders are successively accumulated in the powder supply units in theorder from the upstream end powder supply unit to the downstream endpowder supply unit. A powder sensor is provided between the rearmostpowder supply unit and the suction device. If all powder supply units arefilled with powders, residual powders are discharged out of the downstreamend powder supply unit. If the sensor detects the powder, operation of thesuction device and the powder replenishment device is stopped.

Inventors: Sakai; Yoshitaka (Utsunomiya, JP), Kikuchi; Masao (Utsunomiya, JP)


International Classification: A21C 9/04 (20060101); A21C 9/00 (20060101); B65G 053/44 ()

Expiration Date: 12/25/2014