Patent ID: 6520592
Filing Date: 2003-02-18
Classification: E01C

Abstract:
A pavement demolition hammer removably fastened to a loader, comprising:a mounting plate securable to the loader; a framework attached to the mounting plate and provided with a lower spring and an upper spring spaced from the lower spring; and a hammer handle having a proximal end pivotally mounted to the framework for swinging movement between the lower spring and the upper spring, and a distal end equipped with a hammer head adapted to engage the pavement, whereby the loader applies a moving force to the mounting plate such that the lower spring is accelerated against a bottom of the handle causing the handle and the hammer head to swing upwardly from a pavement surface to be broken towards the upper spring, the handle and the hammer head returning to the pavement surface either by gravity or acceleration from the upper spring against a top of the handle in a manner such that the hammer head impacts and demolishes the pavement surface, wherein the mounting plate is a generally rectangular planar surface having a V-shaped bracket at an upper end, and a rearwardly extending lip with a pair of spaced apertures at a lower end, the bracket and the lip being removably engagable with an adapter plate on the loader, and wherein the framework includes a horizontally extending fork bottom disposed perpendicularly and forwardly of the mounting plate, a vertically extending fork top rising from a rearward end of the fork bottom along a forward surface of the mounting plate, and an upwardly and forwardly extending fork extension connected to an upper end of the fork top.