In a gas internal combustion type nailing machine, a tubular-shaped sleeve 33 is fixed between a movable housing 31 and a fan 7. Between the movable housing 31 and sleeve 33, an annular space portion S is formed. In such portions of the sleeve 33 as existi...

This invention relates to controlling a tool for driving fastening elements through firing a fuel. A valve, upon each shot, opens via a current (I A ) in a component (15) created by a voltage injection control (U v ). Upon the first one of a series of shot...

A combustion type power tool (1) having a fan (30) capable of providing a desirable turbulence in a combustion chamber (26) in order to accelerate the fuel mixing process and to accelerate ignition. A fan is rotatably disposed in a combustion chamber (26) ...

A non-sealing, lubricating piston ring (15) for lubricating the cylinder wall (11) of a piston housing in a combustion tool is disclosed. The lubricating piston ring (11) is made from a lubricating material such as polytetrofluroethylene (PTFE). The shape ...

A combustion chamber system (1) comprises a pre-combustion chamber (2) and a final combustion chamber (3) separated by means of a combustion control wall (4). The pre-combustion chamber (2) is structured so as to define a multi-stage annular structure comp...

A combustion chamber system (1) having a pre-combustion chamber (2) in communication with a final combustion chamber (3), where the length (B) of said pre-combustion chamber (2) is substantially greater than its width (A). The pre-combustion chamber (2) ca...

A valve (10) configured for use with a fuel cell (12) in both a disengaged position, in which the valve has not established fluid communication with the fuel cell, and an engaged position, in which the valve has established fluid communication with the fue...