Patent ID: 6015276
Filing Date: 2000-01-18
Classification: B60S,F04D

Abstract:
A washer pump for use in a window washing system comprising:a pump motor;an impeller having a front end of a first diameter directly coupled to an armature of said pump motor and an impeller tip of a second, reduced diameter with blades extending from said front end to said impeller tip;said impeller tip having an outer surface;a pump motor housing for receiving said pump motor;an impeller housing defining a pump cavity for receiving the impeller and comprising a housing end for coupling to said pump motor housing and a tip end; andsaid impeller housing and said impeller cooperating to maintain said impeller in a substantially centrally-located position in said pump cavity;said impeller housing comprising an inner surface defining an aperture for receiving said impeller tip, with said inner surface and said outer surface forming a bearing therebetween.