Patent ID: 9062590
Filing Date: 2015-06-23
Classification: F01N

Abstract:
1. An exhaust muffler, comprising: a pair of base members disposed substantially parallel to one another and defining an exhaust entry and exhaust exit; first and second wall members coupled to the base members, the first and second wall members being intermediate the base members and intermediate the entry and exit, the first and second wall members comprising linear portions coupled to semicircular portions; at least one side surface coupled to the base members, wherein the linear portions of the first and second wall members extend from the at least one side surface in a convergent manner such that the semicircular portions of the first and second wall members are inclined toward one another, there being formed at least one chamber by cooperation of at least one of the first and second wall members, the at least one side surface and at least one of the base members, and wherein the first and second wall members can be made larger or smaller thereby altering the level of sound.