SCREEN Russian patent published in 2009 - IPC B07B1/40 B07B1/42 

FIELD: mining.

SUBSTANCE: invention refers to devices for sizing bulk material, particularly to screens which can be most successfully implemented in mining and building industries. The screen consists of a box with a sieve assembled on spring loaded supports, of an unbalance load and of a gear pair connected to a driven shaft. The unbalance load is made in form of a conic pinion equipped with its own unbalance load and assembled on the shaft installed in bearings of the driven shaft perpendicular to its axis; this conic pinion meshes with another conic pinion rigidly secured on the box coaxially to the driven shaft.

EFFECT: upgraded efficiency of screening.

2 dwg