Importance

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Abstract

A combustion-powered driving tool for driving nails or other fasteners includes a push lever, a push switch, a trigger switch, a combustion chamber, a sparkplug, and a control section. The push switch is provided for detecting that the push lever is pressed against the workpiece and outputs a first signal indicative of a pressed condition. The trigger switch is provided for instructing to drive the fastener into the workpiece. The trigger switch outputs a second signal indicative of an instruction to drive the fastener. The sparkplug is exposed in the combustion chamber and ignites a mixture of air and flammable gas in the combustion chamber to create a driving force for driving the fastener into the workpiece. The control section is responsive to the first signal and the second signal and commences an igniting operation of the sparkplug at a timing after expiration of a prescribed period of time staring from a timing at which the first signal is output from the push switch.

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First Claim