Patent ID: 7195555
Filing Date: 2007-03-27
Classification: B60H

Abstract:
1. An air duct outlet, comprising: a housing comprising spaced-apart top and bottom walls, and spaced-apart first and second U-shaped side walls extending between the top and bottom walls to define an air passageway having an inlet and outlet, and wherein the side walls diverge in a downstream direction; a first intermediate wall positioned relative to the first U-shaped side wall to define a first air return passageway, wherein the first air return passageway is configured to divert a first portion of an air stream flowing through the air passageway and to direct the diverted air stream first portion into the air passageway at a location between the inlet and outlet and at an angle substantially transverse to a direction of the air stream; and a second intermediate wall positioned relative to the second U-shaped side wall to define a second air return passageway, wherein the second air return passageway is configured to divert a second portion of an air stream flowing through the air passageway and to direct the diverted air stream second portion into the air passageway at a location between the inlet and outlet and at an angle substantially transverse to a direction of the air stream; wherein an oscillating, sweeping motion is imparted to the air stream flowing through the air passageway as a result of air being diverted by the first and second air return passageways.