Patent ID: 8347832

Claim:
A fuel supply and combustion chamber system for use within a power tool, comprising: a combustion chamber; a liquid fuel supply containing a supply of liquid fuel; a valve fluidically connected to said liquid fuel supply for dispensing a predetermined amount of said liquid fuel from said liquid fuel supply; an evaporator fluidically connected at a first end portion thereof to said valve for converting said predetermined amount of said liquid fuel, dispensed by said valve, into a gaseous fuel, and fluidically connected at a second end portion thereof to said combustion chamber for supplying said gaseous fuel to said combustion chamber; a workpiece contact element operatively connected to said valve so as to cause said valve to dispense said predetermined amount of said liquid fuel from said liquid fuel supply when said workpiece contact element is disposed in contact with a workpiece; intake and exhaust valves operatively associated with said combustion chamber; an ignition device operatively associated with said combustion chamber; and a trigger mechanism, movably mounted upon said power tool and operatively connected to said ignition device and said intake and exhaust valves, so as to activate said ignition device in order to initiate combustion of said air-fuel mixture within said combustion chamber, and to move said intake and exhaust valves to CLOSED positions, when said trigger mechanism is actuated so as to initiate a power tool firing cycle.