Patent ID: 7849989

Claim:
A one-way clutch comprising: an outer ring having a cylindrical wall on an inner circumference thereof, an inner ring having pockets opening toward said cylindrical wall and forming cam surfaces therein, rolling elements arranged between said outer and inner rings and engageable between the cam surfaces and the cylindrical wall to perform transmission of a torque between said outer and inner rings, and springs received in said pockets and biasing said rolling elements, respectively, wherein said inner ring is provided on an outer circumferential wall thereof with lube-oil receiving and accumulating parts forming lube-oil receiving and accumulating recesses between said pockets to receive and accumulate lube oil, and wherein said lube-oil receiving and accumulating parts are inclined such that said lube-oil receiving and accumulating recesses become narrower in an idling direction of said outer ring to facilitate feeding of lube-oil from said lube-oil receiving and accumulating recesses into said pockets.