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US 9,038,515 B2Granted
Logic control for fast-acting safety system
AssigneeSd3, LLC
InventorStephen F. Gass
Life of this patent
Estimating the term…
Abstract
Woodworking machines with cutting tools and motors to drive the cutting tools are disclosed. The machines may be equipped with a detection system that detects a dangerous condition between the cutting tool and a person, and with a reaction system that performs a specified action upon detection of the dangerous condition. The machines also may be equipped with a control system that tests the operability of at least a portion of the detection system and/or the reaction system. The control system may disable the motor if the tested portion is inoperable.
Claims12
A woodworking machine comprising:
- a cutting tool for cutting workpieces;
- at least one motor configured to drive the cutting tool;
- a detection system configured to detect a dangerous condition associated with the cutting tool;
- a brake mechanism having at least one replaceable single-use component, and controllable to stop the cutting tool if the dangerous condition is detected;
- and
- a control system configured to detect whether the single-use component has been used, and to disable the at least one motor until the single-use component has been replaced.
3 more elements
A woodworking machine comprising:
- a cutting tool for cutting workpieces;
- at least one motor configured to drive the cutting tool;
- a detection system configured to detect a dangerous condition associated with the cutting tool;
- a reaction mechanism having a replaceable single-use component, and controllable to disable the cutting tool if the dangerous condition is detected;
- and
- a control system configured to detect whether the single-use component has been used, and if so, to disable the at least one motor until the single-use component has been replaced.
3 more elements
Dependencies are inferred from the claim text.