Patent ID: 9557008
Date: 2017-01-31
CPC Classifications: B27G,F16P,Y10T

Claim:
1. A portable tool with a safety system, comprising: a handling body, the handling body including a tool grip allowing gripping of the tool by a user; a moving cutting part, the safety system comprising a pair of electrodes comprised of i) a distal electrode arranged on the cutting part downstream of the handling body and ii) a proximal electrode arranged at least partly on the handling body, the distal and proximal electrodes being connected to a measurement and assessment unit installed on the handling body, wherein, said measurement and assessment unit is comprised of an integrated circuit touch sensor device provided with a ground connector and with a sense electrode, wherein the ground connector is configured as internal floating ground connected to said proximal electrode or to said distal electrode and the sense electrode coincides with said distal electrode or with said proximal electrode, respectively, wherein said measurement and assessment unit is configured for acquiring a reference capacity value at least upon turning on the portable tool and for issuing a safety signal when the capacity value measured between said two electrodes varies by a preset difference threshold with respect to said reference value, the safety signal being sent to a tool deactivation actuator.