Patent ID: 8657173

Claim:
A portable fastener driving tool, comprising: a main body including a combustion chamber; a rod moveable within the main body to be driven forward by gas combustion or explosion in said combustion chamber; a head part disposed at a front end of the main body and having a fastener guiding part; a magazine removably attachable to the head part and for storing a plurality of fasteners connected with each other by a fastener connecting body; and a power operated fastener feeding mechanism comprising: a rotary feed member for feeding the fasteners one by one into the fastener guiding part to be driven from the head part by forward movement of the rod; and an electric motor for driving the rotary feed member, wherein the rotary feed member comprises at least a rotary feed gear coupled to be driven by the motor and engageable with the fastener connecting body or the fasteners, for feeding the fasteners one by one into the fastener guiding part; and a rotation detection gear rotatable together with the rotary feed gear and arranged coaxially with the rotary feed gear, for indicating a feeding of each of the fasteners into the fastener guiding part.