Patent ID: 9482228
Filing Date: 2016-11-01
CPC Classification: F04C

Claim Text:
1. A variable capacity vane pump comprising: a rotor configured to be driven to rotate; a plurality of vanes housed in the rotor to be free to slide; a cam ring comprising an inner peripheral cam surface against which respective tip end portions of the vanes are slidable, said cam ring being configured to rotate eccentrically relative to a center of the rotor; a pump chamber defined by the rotor and the cam ring in between adjacent vanes; an intake port having an arc shape around the center of the rotor and being configured to lead working fluid into the pump chamber, said intake port comprising: a discharge port configured to lead the working fluid from the pump chamber, wherein the intake port comprises: the first port inner wall surface is in the communication start side intake port end portion, and the second port inner wall surface is in the communication end side intake port end portion.