Patent Number: 6,293,382

Title: Friction plate for wet clutch

Abstract: A friction plate for a wet clutch includes a core plate, and friction members bonded to opposite sides of the plate core. The friction member is provided with a plurality of first oil grooves each permitting the communication between inner and outer circumferential edges of the friction member, and a plurality of second oil grooves each permitting the communication between intermediate portions of the adjacent first oil grooves. The first oil grooves are disposed in such a manner that they are inclined at a given angle in a circumferential direction of the core plate with respect to a line of radius passing through a radially inner end of each first oil groove. The second oil grooves are disposed in such a manner that they are inclined in the same direction as the first oil grooves at an acute angle larger than the given angle with respect to a line of radius passing through a radially inner end of each second oil groove. Thus, the cooling property is enhanced, and the dragging torque is decreased.

Inventors: Nishide; Yukio (Shizuoka, JP), Miyatsu; Mitsuo (Shizuoka, JP), Suzuki; Chiwaji (Shizuoka, JP), Tokumasu; Jyun (Shizuoka, JP)

Assignee: Kabushiki Kaisha F.C.C.

International Classification: F16D 13/58 (20060101); F16D 65/12 (20060101); F16D 13/72 (20060101); F16D 69/00 (20060101); F16D 013/64 (); F16D 013/74 ()

Expiration Date: 09/25/2018