US 7,455,252 B2
	Powder particle disintegrating and sizing apparatus
Yorioki Nara, Ohta-ku (Japan); Yoshinori Hanada, Ohta-ku (Japan); Kenji Hamada, Ohta-ku (Japan); Yoshihiro Wakamatsu, Ohta-ku (Japan); Shinichi Yamamoto, Ohta-ku (Japan); and Yuko Nakahara, Ohta-ku (Japan)
Assigned to Nara Machinery Co., Ltd., Tokyo (Japan)
Appl. No. 10/528,809 PCT Filed Mar. 25, 2004, PCT No. PCT/JP2004/004231 § 371(c)(1), (2), (4) Date Oct. 06, 2005, PCT Pub. No. WO2004/085069, PCT Pub. Date Oct. 07, 2004.
Claims priority of application No. 2003-086292 (JP), filed on Mar. 26, 2003.
Prior Publication US 2006/0124788 A1, Jun. 15, 2006
Int. Cl. A47J 19/00 (2006.01); B02C 17/02 (2006.01); B07B 13/00 (2006.01)

U.S. Cl. 241—89.3  [241/189.1]

14 Claims

1. A particle crushing and sizing apparatus, comprising in a casing: a drive shaft provided horizontally; a plurality of circular plates fixedly supported at intervals by said drive shaft; and stators provided below said circular plates and opposing the peripheral edge plate faces thereof, said stators having inclined faces such that the gap between said stators and the plate faces of said circular plates becomes narrower towards the peripheral edge of the plate faces; wherein the plate faces of said circular plates and the inclined faces of said stators form gap portions where particles are held, and wherein the narrowest gap portions between the peripheral edges of said circular plates and said stators form crushing and sizing portions.