Patent ID: 8378533

Claim:
A pump motor comprising: a stator including a plurality of teeth arranged along a circumferential direction, each of the teeth provided with a cap portion at a tip end thereof, the stator being encapsulated with resin; a rotor arranged inside the stator and arranged to oppose the cap portion of each of the teeth; a housing arranged to accommodate the stator and the rotor, the housing including a fluid path defined therein, the fluid path being arranged to transfer a fluid therethrough; and an outlet port arranged axially above the fluid path and an inlet port arranged axially below the fluid path, at least a portion of the outlet port being arranged to overlap with the fluid path when viewed from the axial direction; and a discharge-side cover member including an outlet port, the discharge-side cover member includes an axially lower side surface that is in direct surface-to-surface contact with an axially upper side surface of the resin that encapsulates the stator; wherein the fluid path includes a substantially annular gap axially extending between the stator and the rotor; the cap portion of each of the teeth includes a first opposing surface and a second opposing surface provided in an opposing relationship with the rotor to define a portion of the fluid path, a distance between the first opposing surface and an outer circumferential surface of the rotor being greater than a distance between the second opposing surface and the outer circumferential surface of the rotor; and the discharge-side cover member is a separate member from the resin that encapsulates the stator.