Patent ID: 6392182
Filing Date: 2002-05-21
Classification: B23H

Abstract:
A work tank for an electric discharge machine for providing dielectric fluid between a workpiece and a tool electrode, comprising:a work tank for surrounding the workpiece, said work tank including a tank wall having an opening on a front side thereof; a front door movable in a generally horizontal direction between an unlock position where the front door is vertically movable, and a lock position where the opening is closed in a generally liquid-tight relationship; a pair of brackets, each attached to a respective side of the front door, and extending rearwardly thereof; a pair of fulcrums, each attached to a respective bracket; a pair of handle levers, each supported on a respective bracket so as to pivot about the respective fulcrum; a handle for connecting respective tips of the handle levers; a cam follower, fixed to the handle lever forward of the fulcrum, and vertically movable between a first position higher than the fulcrum, and a second position lower down than the fulcrum; and a movement restricting member for restricting horizontal movement of the cam follower.