Patent ID: 8714949

Claim:
A washer fluid pump for a window cleaning system of a motor vehicle comprising: a housing defining a plurality of sections along its length; an electric motor arranged in a first section of the housing; a pump unit arranged in a second section of the housing and driven by the electric motor; and a ventilation duct providing fluid communication between an inside portion of the electric motor and an environment, wherein the ventilation duct leads along the length of the housing from a first plane perpendicular to the length of the housing and adjacent the electric motor to a second plane parallel to the first plane and disposed between the first plane and the pump unit, and along the length of the housing from the second plane into the environment, wherein the ventilation duct includes: two first sections, each leading away from the inside of the electric motor, both first sections opening out into a single, shared collecting space disposed at the second plane, and two second sections, each leading away from the collecting space and into the environment, and wherein the two first sections of the ventilation duct are arranged at diametrically opposite sides of the electric motor and the two second sections of the ventilation duct are connected to diametrically opposite sides of the collecting space, and wherein the first sections are radially offset to the second sections of the ventilation duct by 90° in the second plane.