of a cylindrical object in a cylindrical coordinate system and is not intended to limit the present invention in any manner object 90 includes axial surface 91 radial surface 92 and circumferential surface 93 surface 91 is part of an axial plane surface 92 is part of a radial plane and surface 93 is part of a circumferential plane the following description is made with reference to fig2 fig2 is a top half cross sectional view of prior art torque converter 100 torque converter 100 includes impeller assembly 102 with blades 104 shell 106 core ring 108 and impeller hub 110 hub 110 is fixed to shell 106 by weld 112 hub 110 is for sealing to a transmission not shown and drivingly engaging a transmission pump not shown converter 100 further includes turbine assembly 114 with blades 116 shell 118 and core ring 120 stator assembly 122 is axially disposed between impeller assembly 102 and turbine assembly 114 assembly 122 includes housing 124 one way clutch 126 and side plate 128 clutch 126 may be a roller or sprag design as is commonly known in the art thrust bearings 130 and 132 are disposed on opposite axial sides of stator assembly 122 converter 100 includes cover assembly 134 fixedly attached to impeller assembly 102 at weld 136 cover 134 includes shell 138 drive plate 140 with lugs 142 and drive plate 144 plates 140 and 144 are attached to shell 138 at respective rivets 146 and 148 one.