Abstract: The present invention relates to an integrated percussion power tool which contains a percussion mechanism and a lift assist mechanism to reduce the physical demands for its operation by facilitating the lifting and extracting of the percussion power tool. In general, the integrated percussion power tool is a T-shaped machine which has a vertical cylindrical body with two handles, two hand control levers cross the top, and a working tool and a lifting foot on the bottom for engaging with a working surface. The first hand lever is for controlling the operation of the percussion mechanism, whereas the second hand lever is for manipulating the operation of the lift assist mechanism. The percussion mechanism and the lift assist mechanism are both housed in the vertical cylindrical body of the integrated percussion power tool.

Abstract: The present invention relates to a lift assist device which is used to alleviate the physical demands for the operation of a heavy percussion power tool, such as a pneumatic jackhammer, by facilitating lifting and freeing the percussion power tool. In general, the lift assist device contains an actuating cylinder with a lifting foot attached to the outside end of its piston rod and a control unit which comprises a directional control valve and a hand lever. The control unit is on the top of the lift assist device and can be used to control the lifting speed and height. The lift assist device is secured to the body of the percussion power tool with one or more mounting elements.