ELECTROMAGNETIC PERCUSSION ACTION MACHINE Russian patent published in 2002 - IPC

FIELD: electric machine engineering, namely manufacture of percussion-action tools and specialized percussion-action machines. SUBSTANCE: machine includes percussion action tool mounted at side of stator including coil, magnetic circuit and guide inside which striker is arranged. Striker is fixed by means of returning and braking elastic members with gap relative to tool. Elastic members satisfy to given mathematical relation. EFFECT: enhanced efficiency of machine at working heterophase variable-rigidity materials, increased maximum rate of percussions. 2 cl, 5 dwg