Invention Grant
- Patent Title: Friction plate
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Application No.: US15603507Application Date: 2017-05-24
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Publication No.: US10731712B2Publication Date: 2020-08-04
- Inventor: Ryo Ohashi , Norio Takakura
- Applicant: DYNAX CORPORATION
- Applicant Address: JP Chitose-Shi, Hokkaido
- Assignee: DYNAX CORPORATION
- Current Assignee: DYNAX CORPORATION
- Current Assignee Address: JP Chitose-Shi, Hokkaido
- Agency: Rankin, Hill & Clark LLP
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@19af8bc3
- Main IPC: F16D69/00
- IPC: F16D69/00 ; F16D13/64 ; F16D13/74 ; F16D13/58 ; F16D13/72 ; F16D25/12

Abstract:
Problem—To provide a friction plate with reduced drag torque.Solution—The friction plate is formed with oil grooves having the sectorial shapes spreading toward the inner circumference and the perimeter. The adjacent edges of the friction material segments are provided with the perimeter side vertex and the inner circumference side vertex respectively. The sectorial oil groove opening toward the perimeter side from the inner circumferential side vertexes can discharge a lube oil to the perimeter side efficiently by a centrifugal force. Also, owing to the sectorial oil groove opening toward the inner circumference side from the perimeter side vertexes, a lube oil can be made to run aground onto the friction material segments due to a centrifugal force, thus, reducing the drag torque markedly compared with the conventional plates.
Public/Granted literature
- US20170350456A1 FRICTION PLATE Public/Granted day:2017-12-07
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