Patent ID: 8505203
Filing Date: 2013-08-13
Classification: B23P,F01N,Y10T

Abstract:
1. A method of installing a mat within an exhaust gas aftertreatment or acoustic device having two adjacent surfaces, the mat having laterally spaced side edges, the method comprising the steps of: tapering each of said side edges at a predetermined angle; wrapping the mat completely around the one of the two adjacent surfaces to completely encircle the one surface; continuing to wrap the mat completely around itself a plurality of times telescopically such that with each successive wrap of the mat its side edges are offset a distance from the side edges of the previous underlying wrap whereby each of said side edges of the continued wrapping together are generally in the shape of a truncated cone; compressing the mat between the two adjacent surfaces of the device, said compressing step including translating the two adjacent surfaces relative to one another with the wrapped mat therebetween, whereby the tapered edges on the continued wrapping of the mat are shifted so that their edges are generally perpendicular to said adjacent surfaces and the offset edges on the continued wrapping of the mat are shifted into the direction of the translation so that the edges of each mat wrapping are generally aligned with the edges of the other mat wrappings in a plane perpendicular to the adjacent surfaces.