Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
January 3, 2017
Patent Application Number
14645506
Date Filed
March 12, 2015
Patent Citations Received
Patent Primary Examiner
Patent abstract
A multi-plate friction clutch wherein lubrication sites of the clutch can be efficiently supplied with oil to be sufficiently lubricated. A multi-plate friction clutch includes a clutch outer, a clutch center, clutch plates, and a pressure plate. A center ring protrusion protruding into a cylindrical shape from the outer surface of a center bottom wall part is formed at substantially the same radial position as a plurality of communication holes. Furthermore, a ring recess opened toward the axial center is formed in the inner circumferential surface of the center ring protrusion and the communication holes are so opened as to face the ring recess.
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