Patent ID: 9638204
Date: 2017-05-02
CPC Classifications: F01C,F04C,F04D,F05C,Y10T

Claim:
1. A pump assembly comprising: an inlet having an open end, an outlet having an open end and a housing having a rotor within the housing and shaped to form with an interior surface of the housing at least one chamber that on rotation of the rotor conveys fluid from the inlet aperture to the outlet aperture, the housing including a seal located between the inlet and the outlet and urged into contact with the rotor along a sealing line to prevent the passage of fluid past the rotor from the outlet to the inlet, the inlet aperture and the outlet aperture having respective portions adjacent respective edges of the seal and the inlet and the outlet having respective centre lines that are parallel to, and spaced apart from one another, and lie in a plane normal to the axis of the housing, a radius of the housing passing through the sealing line being angled and non-parallel relative to the centre lines of the inlet and the outlet; the sealing line located between the centre lines of the inlet and the outlet; and wherein in use, fluid will flow through the inlet and the outlet in the same direction.