Patent ID: 8302832

Claim:
A fastener driving tool, comprising: a power source including a cylinder, a piston with a driver blade reciprocating in said cylinder; a tool nose associated with said power source for receiving said driver blade for driving fasteners fed into said nose; a magazine constructed and arranged to house a supply of the fasteners; a magazine feeder mechanism associated with said magazine for sequentially feeding fasteners into said nose, said feeder mechanism including a reciprocating feed piston; a conduit connected between a port in said cylinder and said feeder mechanism for diverting combusted gas from said cylinder for activating said feed piston; and said port disposed in said cylinder a specified distance below a piston prefiring position, said distance being reflective of a delay of feeding said gas to said feed piston at least until engagement between an end of said driver blade and a head of a fastener in said tool nose.