Patent ID: 7175065

Claim:
A nailing gun with dust-blowing device comprising: the nailing gun with two sides and a grip; the dust-blowing device attached at one side near the grip on the nailing gun and comprising: a tube body longitudinally attached to the nailing gun and having a lower axial hole, an upper axial hole aligning to the lower axial hole and having a diameter larger than one of the lower axial hole, an interface between the upper axial hole and lower axial hole, a channel transversely defined in the tube body and communicated between the upper axial hole and an interior of the nailing gun; wherein, the upper axial hole has an inner thread and the tube body has a top and an annular recess defined at the top around the upper axial hole; a piston shaft received inside the tube body and comprising a head, a rod perpendicularly attached to the head and moveably received inside the lower axial hole; wherein the rod has a distal end, a stop at the distal end having a diameter larger than the one of the lower axial hole, an engaging cutout defined on the rod, and two annular grooves defined on the rod to respectively engage two O-rings; a spring sleeving the rod of the piston shaft, received inside the upper axial hole of the tube body and clamped between head of the piston shaft and the interface of the tube body to provide a restitution force to the piston shaft; a bolt mounted on the top of the tube body and having two ends, a flange formed at one end, an outer thread defined at the other end, a ring recess defined between the flange and the outer thread, an outlet in form of a sunken hole defined axially near the flange, and a head recess defined axially at the other end having the outer thread to engage the head on the piston shaft; and an actuating device engaged the engaging cutout on the rod of the piston shaft and having a trigger extending backward and operated by pushing forward.