Concrete pulverizer

A concrete pulverizing attachment for breaking pieces of concrete, said attachment being adapted for mounting on an outer end of a dipper arm of a power excavator, said concrete pulverizing attachment comprising:

• a movable lower jaw forming a crushing upper surface on which a concrete piece can be received, having a front edge on which a set of teeth are mounted, and having a rearwardly extending, elongate arm rigidly connected to the lower jaw and adapted for orienting the lower jaw;
• a movable upper jaw having first pivot means for pivotably connecting a rear end section of the upper jaw to said outer end of the dipper arm, having means for crushing said concrete piece between said upper jaw and the upper surface of said lower jaw, and having second pivot means for pivotably connecting said upper jaw to a hydraulic cylinder actuator mounted on a front side of the dipper arm, whereby during use of the attachment said upper jaw can be pivoted from an upper open position to a closed position by said hydraulic cylinder actuator, said crushing means lying adjacent said crushing upper surface in said closed position;
• and
• hydraulic power means connectible to a rear end section of said rearwardly extending elongate arm in order to pivot said lower jaw to a plurality of desired operating positions,
• wherein during use of the pulverizing attachment on a dipper arm, said lower jaw can be pivoted to a horizontally extending operating position in order to scoop up one or more concrete pieces to be crushed.