Patent ID: 7571844

Claim:
A portable device for inserting fixing elements into predefined seats in a work piece, the portable device comprising: a drive head; a drive rod extending downward from the drive head; a hollow nose piece slidably fit around a lower end of the drive rod, the nose piece being attached to the drive head and being movable vertically by a predetermined distance with respect to the drive head and the drive rod; a magazine mounted on the nose piece at a predetermined angle with respect to a lower face of the nose piece for feeding a first fixing element into a horizontal slot on the lower face the nose piece; and a single-blow drive mechanism providing a force produced by a pressurized fluid to an upper end of the drive rod, wherein the force on the drive rod drives the first fixing element into the predefined seat in the work piece, wherein the horizontal slot on the face of the nose piece has a depth in the vertical direction that is made to be less than lengths of the fixing elements so that lower ends of the fixing elements in the slot project below the lower face of the nose piece, the lower ends of the fastening elements enabling a user of the portable device to locate successive ones of the predefined seats into which the fixing elements are to be inserted.