Abstract: A pump, in particular for a fluid circuit in a vehicle, for example a coolant pump with a multi-part housing which has a pump chamber and a motor chamber, wherein an impeller is disposed in the pump chamber which is driven by a rotor arranged in the motor chamber, and wherein the rotor has a rotor shaft and a rotor body through which the rotor shaft is guided, wherein the rotor has through holes, which interconnect a space of the motor chamber on a first side of the rotor and a space of the motor chamber on a second side of the rotor.

Abstract: A pump, in particular for a fluid circuit in a vehicle, for example a coolant pump with a multi-part housing which has a pump chamber and a motor chamber, wherein an impeller is disposed in the pump chamber which is driven by a rotor arranged in the motor chamber, and wherein the rotor has a rotor shaft and a rotor body through which the rotor shaft is guided, wherein the rotor has through holes, which interconnect a space of the motor chamber on a first side of the rotor and a space of the motor chamber on a second side of the rotor.

Abstract: A windshield washing system for a motor vehicle which moves a jet nozzle (1) from an inward rest position to an outward working position by pressure applied to a cleaning liquid. A valve cover (4) of a valve is moved, together with a nozzle support (2) by the pressure of the cleaning liquid and holds a passageway of the nozzle support closed until the valve cover engages a fixed stop (5) and the valve cover of the valve then opens. The stop is on a fixed shaft-shaped holding element (7) which, in the rest position of the jet nozzle, extends into a receiving element (9). The receiving element is inserted into a passageway of the nozzle support and is sealed, by an inner side of the valve cover. When the jet nozzle is in its working position, cleaning liquid flows through a passage space between the receiving element and the nozzle support to the jet nozzle.

Abstract: A nozzle carrier for a windshield washing apparatus has an outer cylinder (1) and a telescoping inner cylinder (2) in the outer cylinder. The inner cylinder has at an end portion thereof a jet nozzle (3) which can be shoved out of the outer cylinder. A first plunger (4) is sealed about its periphery to the outer cylinder and is movable by pressure of washing liquid away from a second plunger (5). In this manner the inner cylinder is shoved out of the outer cylinder. When both cylinders are at their greatest spacing from one another they determine, together with the outer cylinder, a space which serves to receive a particular quantity of washing liquid. Thereafter, the second plunger is urged, by pressure of the washing liquid, toward the first plunger. This causes, after the opening of a valve in series with the jet nozzle, the washing liquid to flow through a passageway (8) of the first plunger toward the jet nozzle.