Patent ID: 7225768

Claim:
A combustion-type power tool comprising: a housing having one end and another end and defining a longitudinal direction; a cylinder head disposed at the one end; a cylinder disposed in and fixed to the housing; a piston reciprocally movable in the longitudinal direction and slidable relative to the cylinder, the piston dividing the cylinder into an upper space above the piston and a lower space below the piston; a combustion-chamber frame disposed in the housing and movable in the longitudinal direction, the combustion chamber frame being abuttable on the cylinder head to provide a combustion chamber in cooperation with the cylinder head and the piston; a motor disposed at the cylinder head and comprising a motor body and a drive shaft extending from the motor body in the longitudinal direction and protruding into the combustion chamber; a fan connected to the drive shaft to be rotatable within the combustion chamber; and a buffer piece made from an elastic material and supported to the cylinder head, the buffer piece being movable relative to the cylinder head, the buffer piece being formed with a through-hole through which the drive shaft extends.