| 摘要 |
Safety equipment has a light-emission group in the vicinity of one side of the work tool and on the other side at least one corresponding light-sensitive receiver group sensitive to a laser beam of constant lateral width, with the radiation axis parallel to the work tool and intersected by the perpendicular axis of movement of the work tool, where the light-sensitive receiver group operate by means of electronic and/or electromechanical circuits and elements for stopping the course of the tool path. The laser beam has an electrically sensible zone corresponding to the orthogonal section to the orientation of the light-emission axis, and which has at least three light-sensitive receivers. |
