Logic control for fast-acting safety system
DC CAFCFirst Claim
Patent Images
1. A woodworking machine comprising:
- a cutting tool for cutting workpieces;
a motor configured to drive the cutting tool;
a detection system configured to detect a dangerous condition between a person and the cutting tool;
a reaction system controllable to disable the cutting tool if the dangerous condition is detected; and
a control system configured to determine the operability of the reaction system without having to operate the reaction system and to disable the motor if the reaction system is inoperable.
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Litigations
1 Petition
Accused Products
Abstract
Woodworking machines including cutting tools and motors adapted to drive the cutting tools are disclosed. The machines also include a detection system adapted to detect a dangerous condition between the cutting tool and a person, and a reaction system adapted to perform a specified action upon detection of the dangerous condition. The machines further include a control system adapted to test the operability of at least a portion of the detection system and/or the reaction system. The control system is adapted to disable the motor if the tested portion is inoperable.
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Citations
21 Claims
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1. A woodworking machine comprising:
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a cutting tool for cutting workpieces; a motor configured to drive the cutting tool; a detection system configured to detect a dangerous condition between a person and the cutting tool; a reaction system controllable to disable the cutting tool if the dangerous condition is detected; and a control system configured to determine the operability of the reaction system without having to operate the reaction system and to disable the motor if the reaction system is inoperable. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A woodworking machine comprising:
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a cutting tool for cutting workpieces; a detection system adapted to detect a dangerous condition between a user and the cutting tool; a reaction system adapted to disable the cutting tool when the detection system detects the dangerous condition; and a control system adapted to monitor the detection system and control actuation of the reaction system; where the control system is adapted to test at least a portion of the reaction system to verify that the portion of the reaction system is operational without having to operate the reaction system. - View Dependent Claims (15, 16, 17, 18)
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19. A woodworking machine comprising:
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a support structure; a cutting tool adapted to move to cut a workpiece, where the cutting tool is supported by the support structure; a motor adapted to drive the cutting tool; a detection system adapted to detect a dangerous condition between the cutting tool and a person; a reaction system adapted to perform a specified action upon detection of the dangerous condition; and a self-test system adapted to test the operability of at least a portion of the reaction system without having to perform the specified action and to disable the motor if the tested portion of the reaction system is inoperable. - View Dependent Claims (20)
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21. A woodworking machine comprising:
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a cutting tool for cutting workpieces; a motor configured to drive the cutting tool; detection means for detecting a dangerous condition between a person and the cutting tool; reaction means for disabling the cutting tool if the dangerous condition is detected; and control means for determining the operability of the reaction means without having to operate the reaction means and for disabling the motor if the reaction means is inoperable.
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Specification