公开(公告)号：US11692594B2

公开(公告)日：2023-07-04

申请号：US17722802

申请日：2022-04-18

Applicant: Kabushiki Kaisha F.C.C.

Inventor： Kazuya Uehara ,  Masatoshi Miyagawa ,  Nobuyuki Katayama

IPC: F16D69/00 ,  F16D13/74 ,  F16D13/52 ,  F16D13/64 ,  F16D13/72

CPC classification number: F16D13/74 ,  F16D13/52 ,  F16D13/648 ,  F16D13/72 ,  F16D69/00 ,  F16D2069/004

Abstract: Provided are a wet friction plate and a wet multiplate clutch device including the wet friction plates capable of improving the performance for discharging lubricant oil adhering to surfaces of friction members. A wet friction plate includes oil grooves and friction members on a flat plate annular core metal. At a surface of a porous layer of the friction member, a friction slide surface and lubricant oil recessed portions are formed. The lubricant oil recessed portion has no sharp portion in a pointed shape, such as a corner portion, and is formed with a smooth continuous surface. The multiple lubricant oil recessed portions depressed in a recessed shape with respect to the friction slide surface are formed. In the porous layer, hollow portions are formed to have the same formation rate between a portion forming the friction slide surface and a portion forming the lubricant oil recessed portion.

公开(公告)号：US11333204B2

公开(公告)日：2022-05-17

申请号：US17058160

申请日：2019-05-24

Applicant: Kabushiki Kaisha F.C.C.

Inventor： Kazuya Uehara ,  Masatoshi Miyagawa ,  Nobuyuki Katayama

IPC: F16D13/74 ,  F16D13/72 ,  F16D69/00 ,  F16D13/52 ,  F16D13/64

Abstract: Provided are a wet friction plate and a wet multiplate clutch device including the wet friction plates capable of improving the performance for discharging lubricant oil adhering to surfaces of friction members. A wet friction plate includes oil grooves and friction members on a flat plate annular core metal. At a surface of a porous layer of the friction member, a friction slide surface and lubricant oil recessed portions are formed. The lubricant oil recessed portion has no sharp portion in a pointed shape, such as a corner portion, and is formed with a smooth continuous surface. The multiple lubricant oil recessed portions depressed in a recessed shape with respect to the friction slide surface are formed. In the porous layer, hollow portions are formed to have the same formation rate between a portion forming the friction slide surface and a portion forming the lubricant oil recessed portion.