Patent ID: 8272550

Claim:
An apparatus for shooting a nail, comprising: a barrel ( 1 ) having a nail passage ( 1 a ) therein; a barrel support ( 4 ) within a body of which a first receiving portion ( 4 a ) for receiving the barrel ( 1 ) and a second receiving portion ( 4 b ) communicating with the first receiving portion ( 4 a ) are formed; a centering sleeve ( 6 ) having a through hole ( 6 a ) through its body and mounted movably in the second receiving portion ( 4 b ); a link frame ( 8 ) with one end being connected with the centering sleeve ( 6 ); a cylinder ( 9 ) with one end being connected fixedly with the barrel support ( 4 ); a piston rod ( 10 ) including an elongated rod body ( 10 a ) and a piston disc ( 10 b ), the piston rod ( 10 ) being mounted movably in the cylinder ( 9 ) such that the rod body ( 10 a ) passes through the cylinder ( 9 ) and the through hole ( 6 a ) of the centering sleeve ( 6 ) and aligns with the nail passage ( 1 a ); and an outer housing ( 11 ) with which the other end of the link frame ( 8 ) is connected, a cylindrical cavity ( 11 a ) being formed within the outer housing ( 11 ) and the cylinder ( 9 ) being received within the cylindrical cavity ( 11 a ), the centering sleeve ( 6 ), the link frame ( 8 ) and the outer housing ( 11 ) together being movable relative to the cylinder ( 9 ), thereby forming a closed chamber by the outer housing ( 11 ), the cylinder ( 9 ) and the piston disc ( 10 b ); wherein the barrel ( 1 ) is mounted removably in the barrel support ( 4 ).