Patent ID: 7694749

Claim:
An integrated percussion power tool and lift assist, comprising: a single vertical body comprising at least two integral longitudinal bores, wherein a first integral longitudinal bore is a percussion bore and wherein a second integral longitudinal bore is a first actuating bore; a percussion piston contained within the percussion bore of the single vertical body; a first lift piston contained within the first actuating bore of the single vertical body and dividing the first actuating bore into an upper lifting chamber and a lower retracting chamber; and a first lift piston rod connected to the first lift piston and extending out of the first actuating bore through an opening in the lower retracting chamber and extending out of the single vertical body through an opening in the single vertical body, wherein the first lift piston rod further comprises an outside end; a lifting foot connected to the outside end of the first lift piston rod; a control unit comprising a directional control valve having an on position and a normal position; and a piston retractor arranged to provide a force against the first lift piston in an upward direction away from the lower retracting chamber and towards the upper lifting chamber to thereby keep the lifting foot maintained in a retracted position when the control valve is in the normal position; wherein actuation of the control valve releases said force against the first lift piston to push the first lift piston down with the first lift piston rod and the lifting foot against a working surface to raise the integrated percussion power tool and lift assist from the working surface, thereafter switching the control valve to the normal position to force the piston rod and lifting foot back to the upward and maintained retracted position, thus returning the percussion power tool to the working surface.