Patent ID: 7549842

Claim:
An improved housing apparatus for a blower device configured for employment in a cabinet; said blower device including an air moving unit rotating within the housing apparatus about a rotation axis; the housing apparatus having a width; said air moving unit being generally centered within said width; the housing apparatus being configured for cooperating with said cabinet to effect receiving an air stream generally symmetrically oriented about a flow axis; said flow axis being generally perpendicular with said rotation axis and generally centered on said width; the housing apparatus having at least one input locus and at least one exhaust locus; the housing apparatus cooperating with said air moving unit to move air from said at least one input locus to said at least one exhaust locus; the housing apparatus intersecting said flow axis at an upstream limit and at a downstream limit; the improvement comprising: said housing apparatus having an interior surface establishing a plurality of radii between said rotation axis and said interior surface generally perpendicular with said rotation axis; said plurality of radii having a respective generally constant radial value generally across said width in a respective plane containing said rotation axis in a first zone between said downstream limit and a first edge of a variance zone of said interior surface and in a second zone from a second edge of said variance zone toward said exhaust locus; and said plurality of radii changing generally across said width in said variance zone in respective planes containing said rotation axis between a smallest radius and a largest radius; said smallest radius being less than said constant radial value at at least one of said first edge and said second edge; said largest radius being larger than said constant radial value at at least one of said first edge and said second edge.