Patent ID: 7121391

Claim:
A one-way clutch, comprising: a passive member, with an outer circumferential surface, a top surface and a sliding portion, wherein the sliding portion extends from the outer circumferential surface to the interior of the member and has a first plane surface, not perpendicular to the top surface, and a second plane surface opposite thereto, and the first and second plane surfaces tilt toward each other in a convergent manner and extend to the interior of the passive member from the outer circumferential surface at an inclined angle; an active member slidably disposed on the outer circumferential surface of the passive member and having an inner circumferential surface and an engaging portion, wherein the inner circumferential surface is in slidable contact with the outer circumferential surface of the passive member, and the engaging portion extends from the inner circumferential surface to the interior of the active member; and a rolling member rolling and sliding between the sliding portion and the engaging portion, wherein the difference between the maximum distance from the engaging portion of the active member to the center of the passive member and the radius of the passive member is less than the diameter of the rolling member.