Power tool safety mechanisms

摘要

A sensing mechanism ( 12 ) for detecting user contact with an active portion ( 26 ) of the power tool ( 10 ) is provided. In addition, a safety mechanism ( 14 ) for preventing prolonged user contact with the active portion ( 26 ) of a power tool ( 10 ) is provided. The safety mechanism ( 14 ) is configured to actuate upon receipt of a signal from the sensing mechanism ( 12 ). According to a first aspect, the safety mechanism ( 14 ) is arranged to rapidly displace the active portion ( 26 ) away from a user extremity. Alternatively, according to a second aspect, the safety mechanism ( 14 ) is arranged to rapidly urge an extremity of the user away from the active portion ( 26 ) of the power tool ( 10 ).