Abstract: A parking brake device includes a shift lever pivotally supported on a bracket, a position fixing shaft movably disposed on a shift lever, a support shaft movably disposed on the shift lever and operatively linked with the position fixing shaft, a toothed member fixed to the shift lever, a parking brake cable supported on the bracket, and a hook member pivotally fixed to said support shaft and having a sharp portion and a hook portion at opposing ends thereof whereby upon moving of the shift lever, the hook member is locked with or released from the toothed member and the parking brake cable correspondingly engages with or disengages from the parking brake.

Abstract: The invention is made to provide a reliable driving system by solving the problem of the conventional apparatus caused by unstable current in the chopper transistor located at the low end of the field winding and armature winding. The over drive control apparatus of the direct current series motor of the present invention, including the field winding and armature winding and driven by power from the battery, comprises a chopper transistor to which the battery is applied, and an over drive contactor connected between the chopper transistor and the field windings to switch the battery power from the chopper transistor to the field winding.

Abstract: Disclosed is a regeneration device used for industrial electric vehicle including a main controller having a microcomputer, a contactor circuit having forward and reverse current paths comprised of a DC choke coil, a battery, and an acceleration switch connected to the batter.