Patent ID: 7322103

Claim:
A method of making a cooling jacket assembly for an electric machine, comprising the following steps: forming a hollow cylindrical housing having an outer peripheral surface and an annular axially facing end surface, and having a plurality of grooves formed in the outer peripheral surface; forming an inlet port in the housing, said inlet port extending through the end surface and communicating with a first portion of the grooves; forming an outlet port in the housing, said outlet port extending through the end surface and communicating with a second portion of the grooves; forming a pair of sealing recesses in the outer peripheral surface, said recesses being spaced apart on opposite sides of the grooves; placing a seal in each of the sealing recesses; forming the housing with a lip projecting radially from one end thereof, the lip forming an axially facing annular abutment surface; and sliding a cylindrical sleeve over the outer peripheral surface of the housing so that the sleeve slidably engages the outer peripheral surface, engages the abutment surface of the lip and sealingly engages the seals.