LOOSE MATERIAL HOPPER Russian patent published in 2001 - IPC

FIELD: storage of loose materials. SUBSTANCE: proposed hopper has housing with funnels uniformly spaced in height one over the other. Hopper has rings to receive lower parts of funnels. Rings are provided with working members installed over perimeter at preset pitch and enclosing the funnels from outside. End parts of working members are directed upwards along walls of hopper and are arranged over upper edges of funnels. EFFECT: provision of selective loosening of material in bridge-forming zone on funnel, thus decreasing pressure of material column onto hopper bottom. 3 dwg