Patent ID: 8578550

Claim:
A domestic air treatment apparatus comprising: (a) a fluid flow path including a dirt inlet and a clean air outlet; (b) a suction motor and a treatment member provided in the flow path; and, (c) the fluid flow path comprising a portion that has a bend of at least 45°, the bend having a bend inlet having an inlet direction of flow, a bend outlet having an outlet direction of flow, and a medial portion between the bend inlet and the bend outlet, and a curved outer wall; (d) whereby the fluid flow path through the bend has a cross sectional area and the cross sectional area increases from the bend inlet towards a midpoint of the bend, and decreases from the midpoint to the bend outlet, wherein the curved outer wall defines an outer radial side of the bend inlet, an outer radial side of the medial portion, and an outer radial side of the bend outlet, and wherein a portion of the outer radial side of the medial portion is radially outwardly positioned from a line defined by the outer radial side of the bend inlet and a portion of the outer radial side of the medial portion is radially outwardly positioned from a line defined by the outer radial side of the bend outlet.