公开(公告)号：US09841065B2

公开(公告)日：2017-12-12

申请号：US14665676

申请日：2015-03-23

申请人： AISIN KAKO KABUSHIKI KAISHA

发明人： Hiroki Okamura

IPC分类号： F16D13/64 ,  F16D13/74 ,  F16D65/12 ,  F16D69/00 ,  F16D13/69 ,  F16D65/02

CPC分类号： F16D13/74 ,  F16D13/648 ,  F16D13/69 ,  F16D65/127 ,  F16D2065/1324 ,  F16D2065/1364 ,  F16D2069/004 ,  F16D2069/009

摘要： A wet friction disk that can achieve a further reduction in the drag torque, which includes a ring-shaped core plate having a wave shape in a circumferential direction thereof, a friction member disposed on a principal surface of the core plate so as to being substantially shaped into a ring with a plurality of oil grooves, and the oil grooves each have a shape with a groove width that is narrowed from an inner circumference side toward an outer circumference side of the core plate.