Patent ID: 7237432

Claim:
A vane pump comprising: a motor arrangement that includes: a rotatable shaft; and a support that rotatably supports the rotatable shaft; a rotor that includes a plurality of vanes and is connected to the rotatable shaft; a casing that includes: a pump chamber, which receives the rotor in such a manner that the rotor is eccentric to the pump chamber; and at least one elongated hole, each of which penetrates through the casing in a direction parallel to the rotatable shaft and has an elongated cross section, wherein a major axis of the elongated cross section of each of the at least one elongated hole extends in a direction of eccentricity of the rotor relative to the pump chamber; and at least one male threaded screw member, each of which is received through a corresponding one of the at least one elongated hole of the casing and each of which is threadably engaged with the support to connect the casing to the support, wherein the casing holds each of the at least one male threaded screw member in a minor axial direction of the elongated cross section of a corresponding one of the at least one elongated hole to limit substantial movement of the male threaded screw member in the minor axial direction of the corresponding one of the at least one elongated hole.