GAS COMBUSTION-TYPE DRIVING TOOL

摘要

A gas combustion-type driving tool has a feeding piston/cylinder mechanis m (7) for feeding a feeding claw (23) to a nose section (6). The feeding cla w (23) is engaged with and disengaged from a connection nail received in a m agazine. The feeding piston/cylinder mechanism (7) causes an urging member ( 27) to urge the feeding claw (23) in a feeding direction and causing combust ion gas to retreat the feeding claw (23). In a path (26) for guiding the hig h pressure combustion gas to the feeding piston/cylinder mechanism (7), a va lve (40) for connecting the path (26) to the atmosphere is opened and closed to control the mechanism (7).