Back to results
US 6,957,601 B2Granted
Translation stop for use in power equipment
AssigneeSd3, LLC
InventorsStephen F. Gass, David A. Fanning, J. David Fulmer, Randall J. Huebner
Life of this patent
Estimating the term…
Abstract
Woodworking machines are disclosed having a blade adapted to cut workpieces, and an actuating mechanism operable to move the blade toward the workpiece. The machines also include a detection system configured to detect one or more dangerous conditions between a user and the blade, and a reaction system configured to stop the movement of the blade toward the user upon detection of a dangerous condition by the detection system.
Claims2
An up-cut chop saw, comprising:
- a frame;
- a work surface supported by the frame and adapted to support a workpiece;
- a rotatable blade configured to cut a workpiece on the work surface by moving from below the work surface to a position where at least part of the blade is above the work surface, where the blade is electrically isolated so that it may carry an electric signal;
- at least one brace member coupled to move upward with the blade,
- at least one motor configured to drive the blade;
- at least one actuating mechanism operable to move the blade upward to a position where at least part of the blade is above the work surface;
- a detection system adapted to impart an electric signal to the blade and to monitor the signal for a predetermined change indicative of contact between a person and the blade;
- and
- a reaction system configured to retract the blade from a position where at least part of the blade is above the work surface to a position where the blade is completely below the work surface upon detection by the detection system of the predetermined change indicative of contact between a person and the blade;
- where the actuating mechanism is further operable to lower the blade below the work surface after the blade has been moved to a position where at least part of the blade is above the work surface;
- where the reaction system is configured to operate the actuating mechanism to lower the blade upon detection by the detection system of the predetermined change indicative of contact between a person and the blade;
- and where the reaction system includes a brake mechanism configured to engage the brace member and stop the upward motion of the blade upon detection by the detection system of the predetermined change indicative of contact between a person and the blade.
9 more elements
An up-cut chop saw, comprising:
- a frame;
- a work surface supported by the frame and adapted to support a workplace;
- a rotatable blade configured to cut a workpiece on the work surface by moving from below the work surface to a position where at least part of the blade is above the work surface, where the blade is electrically isolated so that it may carry an electric signal;
- at least one brace member coupled to move upward with the blade,
- at least one motor configured to drive the blade;
- at least one actuating mechanism operable to move the blade upward to a position where at least part of the blade is above the work surface;
- a detection system adapted to impart an electric signal to the blade and to monitor the signal for a predetermined change indicative of contact between a person and the blade;
- and
- a reaction system configured to retract the blade from a position where at least part of the blade is above the work surface to a position where the blade is completely below the work surface upon detection by the detection system of the predetermined change indicative of contact between a person and the blade;
- and where the reaction system includes a brake mechanism configured to engage the brace member and stop the upward motion of the blade upon detection by the detection system of the predetermined change indicative of contact between a person and the blade.
7 more elements
Dependencies are inferred from the claim text.