发明名称 Safety mechanism for a rotary hammer
摘要 An improved method is provided for controlling a power tool having a rotary shaft. The method includes: disposing an inertial mass in a housing of the power tool, such that the inertial mass is freely rotatable about an axis of rotation which is axially aligned with the rotary shaft; monitoring rotational motion of the power tool in relation to the inertial mass during operation of the power tool; and activating a protective operation based on the rotational motion of the power tool in relation to the inertial mass.
申请公布号 US7938194(B2) 申请公布日期 2011.05.10
申请号 US20100765436 申请日期 2010.04.22
申请人 BLACK & DECKER INC. 发明人 CARRIER DAVID A.;PUZIO DANIEL;BRADUS ROBERT
分类号 B23B45/02;B25F5/00 主分类号 B23B45/02
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