Patent ID: 6398495
Filing Date: 2002-06-04
Classification: A47L,D06F,H02H,Y10S

Abstract:
A drain pump for a washing appliance including a wash chamber comprising:an electric motor having a drive shaft; a drain pump impeller mounted on the electric motor drive shaft; and a pump casing co-axial with said motor and said drain pump impeller and adapted to receive water from the wash chamber, said pump casing having a side wall; said drain pump impeller pumping water from said pump casing when said motor is rotated in a first direction; said drain pump impeller comprising a disc, the periphery of which is closely adjacent to said side wall of said pump casing to form a seal against fluid flow up a side of said pump casing, said disc having a hub portion and blades formed on a first surface thereof with a root of each blade radially spaced from a periphery of said hub portion over the full height of the blade to form an unimpeded annular fluid passage between said hub portion and said blades, said hub portion having an open cavity therein.