Patent ID: 9689301
Date: 2017-06-27
CPC Classifications: F01N,Y10T

Claim:
1. A muffler receiving exhaust from an engine, the muffler comprising: a one-piece metal tube having a first edge portion opposing and abutting a second edge portion, the first edge portion being fixed to the second edge portion to define a one-piece shell, the one-piece shell having a first end portion, a second end portion and a central portion disposed therebetween, the shell including a seam at the juncture of the first edge portion and the second edge portion that extends parallel to a longitudinal axis of the shell and terminates at a first seam end and at a second seam end that is spaced apart from the first seam end, the first and second end portions defining first and second cavities, at least one of the first and second cavities having a larger cross-sectional area than a cross-sectional area of a central cavity defined by the central portion, the cross-sectional areas of the first, second and central cavities defined by planes that are perpendicular to the longitudinal axis; a first subassembly disposed within one of the central portion of the shell and the first end portion of the shell and including a first pipe and a baffle; and a second subassembly disposed within the second end portion of the shell and including a first outlet pipe fluidly connected with the first pipe of the first subassembly.