Patent ID: 6638020
Filing Date: 2003-10-28
Classification: F04D

Abstract:
A spiral fluted wheel for a water pump comprising:a top plate having a lock hole defined in a center of the top plate and adapted to be firmly secured on a rotating device of the water pump; a bottom plate corresponding to the top plate and having an inlet aperture defined in a center of the bottom plate for entry of water into the spiral fluted wheel; and multiple spiral impellers sandwiched between the top plate and the bottom plate, each spiral impeller having a spiral channel defined therein and a first wedge and a second wedge laterally extending and complementary engaged to another wedge of an adjacent spiral impeller, wherein the first wedge of each spiral impeller has at least one male engaging element extending outward from the wedge; and the second wedge of each spiral impeller has a female engaging portion defined in a free edge of the second wedge to engage with each respective at least one male engaging element on the first wedge of the adjacent spiral impeller.