Patent ID: 6935460

Claim:
A noise muffler for a gas handling apparatus, comprising: a core with two ends and defining a central blind bore extending in an axial direction and having an inlet at one core end to receive waste gases into the blind bore in the axial direction and a plurality of radial bores between the core ends to redirect the waste gases to flow from the blind bore through the radial bores in directions substantially lateral to axial direction; a filter surrounding the core for filtering the waste gases, the filter having a side and two ends; a cap having a side wall covering the filter side and an end wall covering at least one end of the filter; the core further comprising an integral flange at the other core end to cover the other filter end; and means for defining multiple outlets for discharging the waste gases, the outlet defining means causing the waste gases flowing through the radial bores first to flow in directions lateral to the axial direction, then to flow through the filter in the axial direction and then be redirected again to exit the muffler indirections substantially lateral to the axial direction.