Patent ID: 6083137
Filing Date: 2000-07-04
Classification: F16C,F16H

Abstract:
A power roller for a toroidal type continuous variable transmission system comprising:a trunnion having a central shaft with a longitudinal axis;a bearing outer race connected to the trunnion, one face of which is provided with a first track groove that extends around a central axis that is concentrically aligned with the longitudinal axis of the central shaft;a power roller rotatably mounted on one end portion of the central shaft, the power roller having a face opposing to the one face of the bearing outer race, the face being provided with a second track groove that extends around the central axis that is concentrically aligned with the longitudinal axis of the central shaft;a plurality of rolling elements retained between the bearing outer race and the power roller and capable of rotating within a track formed by the first track groove and the second track groove; anda disk-shaped cage coaxially disposed between the bearing outer race and the power roller and rotatable about the central shaft, the cage including a plurality of through pockets for accommodating the rolling elements therein so as to retain the rolling elements within the track, the pockets being spaced about the circumference at regular intervalswherein the cage accommodates a relief movement of the rolling elements in a radial direction, the relief movement resulting from a deformation of the bearing outer race.