公开(公告)号：US3731798A

公开(公告)日：1973-05-08

申请号：US3731798D

申请日：1970-12-28

Applicant: BREX CORP TRUSTEE

Inventor： ANDERSON E

IPC: B07B1/16 ,  B07B13/04

CPC classification number: B07B1/16

Abstract: An endless series of grading elements are carried through a grading path and provide grading openings between each adjacent pair. Each grading element has parallel side walls joined by end surfaces and control cam means effect tilting of the respective elements to determine the size of the grading openings therebetween.

Abstract translation: 一系列分级元件通过分级路径进行，并在每个相邻的对之间提供分级开口。 每个分级元件具有由端面连接的平行侧壁，并且控制凸轮装置实现各个元件的倾斜以确定其间的分级开口的尺寸。