Patent ID: 8511729

Claim:
An apparatus, comprising: a pair of shaft portions each comprising a handle slidably coupled to a base, each handle comprising a first impact surface and each base comprising a second impact surface, wherein the handles are slidable relative to the bases such that the first impact surfaces of the handles impact the second impact surfaces of respective bases, wherein each base comprises a slot and each handle comprises a pin engageable with the slot of a respective base; a pair of blades each coupled to the base of a respective one of the shaft portions to form respective halves of the apparatus; and a pivot connection pivotally coupling the halves together at a location between the bases and blades of the respective halves such that movement of the handles away from each other moves the blades toward each other, and movement of the handles toward each other moves the blades away from each other; wherein the slot comprises two parallel tracks coupled together by an intermediate track extending substantially perpendicular to the two parallel tracks.