| 摘要 |
A fastener driving tool for driving fasteners into a workpiece includes a trigger assembly movable from an inoperative position to an operative position and a workpiece responsive assembly also movable from an inoperative position to an operative position as the tool is moved adjacent the workpiece. The tool further includes a safety control assembly coupling the trigger and workpiece responsive assemblies to control operation of the tool. The safety control assembly includes a blocking member that blocks the movement of the workpiece responsive assembly if the trigger assembly is actuated prior to placement of the tool on a workpiece.
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