Windshield washer pump assembly

Abstract

A windshield washer pump assembly for jetting a rinsing fluid from a fluid tank onto a windshield to assist windshield wiping operation performed by an automotive windshield wiper. The assembly comprises a washer pump comprising a rotatably supported impeller and a generally cylindrical casing having a fluid inlet, defined in an annular end wall thereof, and a fluid outlet defined in opposition to the fluid inlet. The washer pump is secured to a wall of the fluid tank with the fluid inlet positioned inside the fluid tank. The casing is also formed with a partition wall positioned on one side of the annular end wall to define a pump chamber between the annular end wall and the partition wall for operatively accommodating the impeller. The washer pump assembly also comprises a fluid passage communicating the pump chamber and the fluid outlet for a discharge of the fluid medium under pressure during a rotation of the impeller, a filter member having a perforated region of a diameter greater than the bore size of the fluid inlet positioned exteriorly of the fluid inlet with the perforated region aligned with the fluid inlet, and a filter holder for detachably securing the filter member to the second end of the casing.