Patent ID: 6842988

Claim:
A portable, engine-powered hand tool comprising: a housing ( 10 ) with a rotatable shaft ( 11 ) releasably connected to a rotatable cutting tool ( 13 ); a locking pin ( 17 ) that is movable along it axis inside a hole ( 16 ) in the housing ( 10 ) to a locking position, wherein the locking pin interferes with the rotation of the shaft ( 11 ) to lock the shaft ( 11 ) in a non-rotating position when the locking pin is in the locking position; and a magnet ( 19 ) carried by the housing at a distance from the rotatable cutting tool that permits magnetic communication between the magnet and the locking pin when the locking pin is in the locking position, wherein the magnetic communication between the magnet and the locking pin retains the locking pin ( 17 ) in its locking position to facilitate removal and installation of the cutting tool on the shaft.