Patent ID: 7131404

Claim:
A combustion-type power tool comprising: a housing including a gas canister accommodating section for accommodating a gas canister, the housing having one end and another end; a cylinder head disposed at the one end and formed with a fuel passage allowing a combustible gas from the gas canister to pass therethrough; a cylinder disposed in and fixed to the housing, the cylinder defining an axial direction; a piston slidably disposed in the cylinder and reciprocally movable in the axial direction, 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 axial 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 driver blade extending in the axial direction from the piston in the lower space; and an ignition plug exposed to the combustion chamber for igniting a mixture of air and the combustible gas in the combustion chamber; and wherein an air passage is defined between the gas canister accommodating section and the gas canister accommodated therein, the gas canister accommodating section being formed with an air inlet in communication with the air passage.