Pavement breaking apparatus

DETAILED DESCRIPTION It is thus an object of the invention in one form thereof to provide an improved pavement breaking apparatus which does not operate with a pendulum-like swinging or rocking during the pavement breaking operation.
It is another object of the invention in one form thereof to provide a pavement breaking apparatus that operates without pendulum-like swinging or rocking so as to reduce or eliminate deformation of the cushion material located above the neck of the drive shoe received within the adapter opening.
It is another object to the invention in one form thereof to provide a pavement breaking apparatus that operates without pendulum-like swinging or rocking so as to eliminate torsional loading on the upper frame structure.
Finally, it is an object of the invention in one form thereof to provide a pavement breaking apparatus that transmits substantially vertical blows to the pavement.
In one form thereof, the invention is an apparatus for breaking up a hard surface such as concrete.
The apparatus comprises a frame having an elongate bed with opposite front and rear ends.
The bed is disposed so as to be generally parallel with the surface.
The frame further includes a rail assembly mounted to the bed and being disposed generally normally to the surface.
A set of wheels is mounted to the bed adjacent the rear end thereof.
The front end of the bed are connected to a support so that the bed is spaced above the surface.
A drive shoe is positioned adjacent the surface.
The apparatus further includes a hammer means for repetitively impacting against the drive shoe so as to break up the surface.
The hammer means is mounted to the rail assembly and is operatively connected to the drive shoe.
The apparatus further includes an adjustment means for selectively positioning the drive shoe relative to the hammer means.
In another form thereof, the invention is an apparatus for impacting on a hard surface such as concrete so as to break up the hard surface comprising a frame having a bed and an upstanding rail assembly projecting from the bed