Logic control with test mode for fast-acting safety system

Cutting – With randomly actuated stopping means – Responsive to work sensing means

Reexamination Certificate

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Details

C083S076700, C083SDIG002, C144S391000, C144S427000

Reexamination Certificate

active

10243042

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. The control system also includes a test mode to test whether the detection system is working, to test whether various materials would be detected by the detection system, and/or to test whether various materials would trigger the reaction system.

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