CPC B23D 47/10 (2013.01) [B23D 59/001 (2013.01); B27G 19/02 (2013.01); F15B 15/19 (2013.01); B27B 5/38 (2013.01)] | 8 Claims |
1. A power tool comprising:
a blade for cutting workpieces;
a motor configured to drive the blade;
a structure supporting the blade and configured to allow the blade to retract; and
at least one electromagnet to trigger a retraction of the blade, and
a circuit that controls the at least one electromagnet, where the circuit is configured to supply current to the at least one electromagnet in a first direction to create a magnetic field and in a second direction to reverse the magnetic field.
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