PERCUSSION TOOL Russian patent published in 2014 - IPC B25D11/00 B25D17/24 B25D16/00 B25D17/04 B25F5/00 H01H9/06 H01H9/26 

FIELD: process engineering.

SUBSTANCE: proposed tool has motor, case, handle damping material, manual working element mode selector, movable element and resilient element. Damping material is arranged between case and handle to connect them so that both can displace relative to each other in axial direction of bit. Manual working element is driven by motor, arranged at said handle and shifted from ON position to OFF position. Mode selector is arranged and tool case to select between first mode whereat said bit is continuously operated and second mode whereat it is driven selectively. Movable element can shift said bit with the help of said mode selector. Resilient element is arranged at vibration transfer path. Said resilient element prevents vibration transfer to handle with mode selector at first ON mode and locks the working element at movable element IN position.

EFFECT: damped vibrations at hand-held tool with bit mode selection.

13 cl, 16 dwg