DRIVEN TOOL Russian patent published in 2010 - IPC B25D17/24 

FIELD: process engineering.

SUBSTANCE: invention relates to electrically driven tools, for example hammer or hammer-type drill. Proposed tool comprises electric drive motor, inner mechanism driven by said motor, housing, insert tool driven by said inner mechanism to make preset job, handle and dynamic killer of vibrations. Housing comprises inner housing accommodating inner mechanism and outer housing. The latter houses inner housing and drive motor. Vibration killer comprises weight and flexible element. Flexile element is arranged between weight and housing to apply displacing force to said weight. Said weight reciprocates to counteract flexible element displacing force. Vibration killer is arranged between inner housing sidewall outer surface and outer housing sidewall inner surface.

EFFECT: reduced vibration without increasing tool sizes.

2 cl, 7 dwg