Patent ID: 9273588
Filing Date: 2016-03-01
CPC Classification: B63H,F01N

Claim Text:
1. A marine muffler comprising: a generally hollow muffler housing defining an interior volume, said housing including generally planar opposing side walls, a top and a bottom; said housing including a first end forming an exhaust inlet and an opposing second end forming an exhaust outlet; an inclined baffle disposed within said housing, said baffle having a peripheral edge in sealing engagement with said housing so as to divide the internal volume into a lower inlet chamber and an upper outlet chamber; and an exhaust duct extending through said baffle and terminating in an open bottom end in fluid communication with said inlet chamber, and an open top end in fluid communication with said outlet chamber; at least one cap affixed in sealing engagement with the top end of said exhaust duct, said cap disposed in covering relation with at least a portion of said exhaust duct top end, whereby muffler performance is modified.