Patent ID: 6497565
Filing Date: 2002-12-24
Classification: F01C,F04C

Abstract:
A pump apparatus which is driven by drive force from a drive source, said pump apparatus comprising:a housing; a bearing member provided within a tip end portion of said housing; a pump shaft rotatably supported by said bearing member, a first end of said pump shaft projecting from said tip end portion of said housing; a pump unit accommodated within said housing and operated through rotation of said pump shaft; and a drive member fixed to said first end of said pump shaft projecting from said housing and adapted to transfer drive force from said drive source to said pump shaft, wherein said drive member includes a boss portion fixed to said first end of said pump shaft projecting from said housing, and a rim portion integral with said boss portion, said rim portion being offset from said boss portion to cover at least a portion of said tip end portion of said housing, and said drive member includes a drive force input portion formed on an outer circumference of said rim portion, and to which said drive force is transferred from said drive source, a center of said bearing member in an axial direction of said pump shaft coinciding with a center of said drive force input portion in said axial direction of said pump shaft.