CPC F16P 3/148 (2013.01) [B26D 7/22 (2013.01); B32B 9/00 (2013.01); H01R 39/64 (2013.01); B23D 47/12 (2013.01); B27G 19/00 (2013.01); H01R 39/20 (2013.01)] | 8 Claims |
1. A power tool comprising:
a rotatable arbor;
a blade mounted on the arbor;
a motor to spin the arbor and blade, where the motor has a motor shaft;
a detection system to detect when a person contacts the spinning blade;
a reaction system triggerable to perform an action to mitigate injury upon detection of the contact;
a first conductive coupling establishing an electrical connection between the detection system and the blade; and
a second conductive coupling establishing an electrical connection between the motor shaft and an electrical ground.
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