Patent ID: 6926117

Claim:
A muffler assembly for a pneumatic hand tool having a first exhaust outlet, the muffler assembly comprising: a peripheral wall extending distally from the first exhaust outlet and defining an open distal end, the peripheral wall defining a volume, wherein the volume receives exhaust from the first exhaust outlet; an upper plate adapted to fit snugly within the volume, the upper plate having a plurality of apertures; a plurality of tubes, each tube extending distally from one of the upper plate apertures, each tube having an open proximal end, an open distal end, a sidewall having a plurality of apertures therethrough, and a blocking element disposed between the proximal end and the distal end of the tube; a sound-deadening panel having a plurality of apertures, which apertures are sized and positioned to slidably engage the plurality of tubes and the sound-deadening panel is shaped to fit snugly within the volume defined by the peripheral wall; and a perforated exhaust plate adapted to engage the distal end of the peripheral wall, thereby closing the distal end of the volume.