20150132190 | END RING RETENTION OF METAL CATALYST SUBSTRATES - An end ring assembly is used to create catalytic converter assemblies. The end segments have a length and a sidewall extending substantially the length of each segment, and a front face wall intersecting said sidewall and extending at least a portion of said length. At least one segment has retention barb projections positioned along its length to pierce the catalytic converter substrate and retain the ring segment in place. The ring segment is assembled using welding techniques to create a catalytic converter assembly. | 05-14-2015 |