Patent ID: 8678261

Claim:
A position-limiting device adapted for a powder-actuated fastener-driving gun, the powder-actuated fastener-driving gun having a firing portion and a magazine assembly connected to the firing portion, the magazine assembly including a sleeve, a magazine housing connected to the sleeve and defining a nail-receiving space for receiving a row of nails, and a pusher movable within the magazine housing for pushing and moving the nails therewith, said position-limiting device forming a portion of said magazine assembly and comprising: a nail-guiding pipe adapted to extend through the sleeve such that an end of said nail-guiding pipe is disposed outwardly of the sleeve, said nail-guiding pipe including a tubular body, a nail passage hole formed in said tubular body and adapted to be in spatial communication with the said nail-receiving space in the magazine housing so as to allow one of the nails to be moved from the magazine housing into said nail-guiding pipe therethrough, and two apertures formed respectively in two opposite sides of said tubular body; and a clamping unit disposed on said nail-guiding pipe and extending through said apertures, said clamping unit being adapted for clamping the one of the nails disposed within said nail-guiding pipe.