Patent ID: 7762443
Filing Date: 2010-07-27
Classification: B25C

Abstract:
1. A gas combustion type driving tool, comprising: a combustion chamber; a striking cylinder; a striking piston accommodated within the striking cylinder and driven by high-pressure combustion gas; a driver that is coupled to the striking piston and drives a fastener; a nose portion that slidably guides the driver; a feed piston cylinder mechanism that reciprocally moves a feed claw, that is engaged with and disengaged from connected fasteners accommodated within a magazine, to a nail feed direction for feeding to a side of the nose portion and an evacuation direction in opposite thereto; a spring that is provided at one end of a feed cylinder of the feed piston cylinder mechanism and normally urges a feed piston having the feed claw to the feed direction; a gas tube that couples the combustion chamber with the other end of the feed cylinder; a check valve that is provided at the gas tube; and an exhaust mechanism that exhausts gas supplied within the feed cylinder from the feed cylinder.