SINGLE-STROKE PNEUMATIC APPARATUS

摘要

SINGLE-STROKE PNEUMATIC APPARATUS A single-stroke pneumatic apparatus incorporates a hollow cylindrical frame with inlet and outlet ports. A handgrip containing a directional flow control is attached to the upper end of the frame, A striker is provided in the bore of the frame with provision for reciprocating back and forth so as to divide this bore into a forsards-stroke chamber and a back-stroke chamber. A tool is supported in the lower end of the frame. A shell with holes surrounds the frame from the outside, forming a muffling chamber therewith, within a full length of stroke of the striker.Additional outlet ports are provided in the lower end of the frame which connect the back-stroke chamber to the muffling chamber located wherein is a filter overalying the holes in the shell.