US 12,214,356 B2
Shredding device
Tetsugoro Kitahara, Okayama (JP)
Assigned to TIGER MACHINE CO., LTD., Takahashi (JP)
Appl. No. 17/290,454
Filed by TIGER MACHINE CO., LTD., Takahashi (JP)
PCT Filed Oct. 28, 2019, PCT No. PCT/JP2019/042145
§ 371(c)(1), (2) Date Apr. 30, 2021,
PCT Pub. No. WO2020/090723, PCT Pub. Date May 7, 2020.
Claims priority of application No. 2018-207744 (JP), filed on Nov. 2, 2018.
Prior Publication US 2021/0387202 A1, Dec. 16, 2021
Int. Cl. B02C 18/00 (2006.01); B02C 18/14 (2006.01); B02C 18/18 (2006.01)
CPC B02C 18/0092 (2013.01) [B02C 18/14 (2013.01); B02C 18/18 (2013.01); B02C 2018/188 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A shredding device, comprising:
a housing;
a rotary shaft rotatably attached to an inside of the housing;
a plurality of rotary blades attached around the rotary shaft to be spaced apart from one another in an axial direction of the rotary shaft; and
a plurality of fixed blades attached to a bottom plate of the housing so that an article to be processed is shredded by the plurality of fixed blades in cooperation with the plurality of rotary blades, wherein
each of the plurality of fixed blades is made of a single blade stood upright on the bottom plate,
each of the rotary blades comprises, at an outer corner of a distal end portion of the rotary blade, a sharp, acute angle portion having an acute angle shape configured to shear a garbage bag, the acute angle shape being with respect to a circumferential direction of rotation of the rotary shaft relative to a side view of the shredding device, and
a lifting device which changes a distance between a tip of a rotary blade of the plurality of rotary blades and a tip of a corresponding fixed blade of the plurality of fixed blades by raising and lowering the rotary shaft is provided.