Patent ID: 6059167
Filing Date: 2000-05-09
Classification: B25C

Abstract:
An end base of a power stapler which has a barrel and a cylinder is received in the barrel, a piston movably received in the cylinder, an end cap mounted to the barrel, said end base comprising:a collar having a flange extending from a first side of said collar and said collar adapted to be fixedly connected to the end cap at a second side of said collar;a pad connected to an inside of said flange of said collar, a skirt extending from said pad and adapted to enclose a protrusion of the piston, a distal end of said skirt of said pad adapted to contact the piston;a frame adapted to be movably engaged with the end cap, an annular space defined in an outside of said frame and a seal part engaged with said annular space, a plurality of passages defined radially through said frame and communicating with said annular space where said seal part is engaged, said seal part adapted to removably contact the cylinder, anda spring adapted to be biased between the end cap and said frame.