Patent ID: 8556516

Claim:
A compressor bearing cooling inlet plate comprising: a cooling plate body including a mount plate, and a boss extending axially forwardly from said mount plate, said boss including a plurality of grooves extending axially into said boss to define flow passages for cooling air from an outer peripheral surface of the cooling plate body to an inner bore of the cooling plate body, said grooves each extending for a width between side walls, and said grooves extending at angles which are not directly radially inwardly toward a center axis of said cooling plate body, and there being a plurality of widths across said plurality of grooves; and said mount plate and said boss together extending for a first axial distance, said boss extending for a second axial distance, and a depth of said plurality of grooves axially into said boss defining a third axial distance, and a ratio of said first axial distance to said second axial distance being between 0.6 and 0.76, and a ratio of said second axial distance to said third axial distance being between 4.60 and 5.82.