초록 ▼

A demolition hammer intended for attachment to a bracket or the like. The demolition hammer includes an adapter bracket which connects to the arm of a backhoe in place of the conventional bucket of the backhoe, and a hammer head spaced apart from the adapter bracket by a hammer spring arm cantilever

A demolition hammer intended for attachment to a bracket or the like. The demolition hammer includes an adapter bracket which connects to the arm of a backhoe in place of the conventional bucket of the backhoe, and a hammer head spaced apart from the adapter bracket by a hammer spring arm cantilevered or pivotably mounted with respect to the adapter bracket. Repeated operation of the backhoe hydraulic cylinder which normally pivots the bucket will instead move the hammer into repetitive impacts with the concrete or other work surface undergoing demolition. The flexibility of the hammer spring adds a whipping action which increases the effective impact of such movement.

대표청구항 ▼

A hammer apparatus for attachment to a machine such as a backhoe or the like having an implement attached at an end of an articulated arm, the apparatus comprising: adapter means selectively attachable to the arm in place of the implement; a cantilever spring having one end mounted for pivotable mov

A hammer apparatus for attachment to a machine such as a backhoe or the like having an implement attached at an end of an articulated arm, the apparatus comprising: adapter means selectively attachable to the arm in place of the implement; a cantilever spring having one end mounted for pivotable movement relative to the adapter means and extending outwardly therefrom to a remote end; impact tool means disposed at the remote end of the cantilever spring for impacting a workpiece as the articulated arm moves the adapter means; and secondary spring means urging the cantilever spring to a predetermined nominal pivotable attitude relative to the adapter means and resiliently yielding to permit the cantilever spring a limited pivotable movement as the adapter means is moved; the cantilever spring being sufficiently elastic to impart a whipping action as the cantilever spring moves the impact tool towards the workpiece, so that the whipping action intensifies the impact delivered to the workpiece by the tool.