Power tool safety systems
AssigneeSawStop Holding LLC
InventorStephen F. Gass
Life of this patent
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Abstract
Power tools with detection systems configured to detect a dangerous condition between a person and a cutting tool are disclosed. Fast-acting and low-inertia actuators useable in various applications where a high force must be applied very quickly are disclosed. In power tools, for example in a woodworking machine, a fast-acting and low-inertial actuator as disclosed herein can be used to retract a blade upon detection of a dangerous condition by a detection system. Power tools with a magnetic force holding a blade from retracting until a detection system detects a dangerous condition are disclosed.
Claims5
A power tool comprising:
- a blade for cutting workpieces;
- a motor configured to drive the blade;
- a detection system configured to detect a dangerous condition between the blade and a person;
- a structure supporting the blade and configured to allow the blade to retract when the detection system detects the dangerous condition;
- and
- a magnetic force holding the blade from retracting until the detection system detects the dangerous condition.
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
- electromagnet means for triggering retraction of the blade.
Dependencies are inferred from the claim text.