Patent ID: 8359848

Claim:
An end cap for an exhaust treatment device, comprising: a housing having an axial direction, a radial direction substantially orthogonal to the axial direction, a first open end, and a second closed end opposite the first open end in the axial direction; a port member extending from a surface of the housing and having a central axis substantially aligned in the radial direction of the housing; and at least one vane disposed within the interior of the port member and having a fixed dimensional relationship relative to the port member, wherein: the at least one vane is a plurality of vanes including a first vane and a second vane, the first and second vanes each having a fixed dimensional relationship relative to the port member; and the first vane is angled relative to the central axis of the port member in a first orientation and the second vane is angled relative to the central axis of the port member in a second orientation, opposite the first orientation.