MATERIAL WORKING APPARATUS Russian patent published in 1997 - IPC

FIELD: nonferrous, ferrous industry, powder metallurgy, electric engineering, food processing industry etc. SUBSTANCE: apparatus has constructional member with cylindrical inner working surface, which is continued by tore half with convex spherical segment. Inner working surface may alternatively have various combinations of geometrical forms: cylinder, truncated cone, barrel, ellipse, hyperboloid continued by tore half with ascending cone and descending cone, or ascending truncated cone and descending truncated cone, or ascending truncated cone continued by convex spherical segment, or descending truncated cone continued by concave spherical segment, or ascending astroid half and descending astroid half, or ascending truncated astroid half and descending truncated astroid half, or ascending truncated astroid half continued by convex truncated astroid half and descending truncated astroid half continued by concave spherical segment. Geometrical inner shape of working volume has alternative combinations of asymmetrical shapes: cylinder or ascending truncated cone, or descending truncated cone, or barrel, or hyperboloid, which are continued by tore half, having ascending cone, or ascending asteroid half, or ascending truncated asteroid half, or ascending truncated asteroid half continued by convex spherical segment. EFFECT: increased efficiency, wider operational capabilities and enhanced reliability in operation. 3 cl, 54 dwg