Patent ID: 8418316
Filing Date: 2013-04-16
Classification: B60B,Y10T

Abstract:
1. A friction wheel, comprising: a hub; two separate bearings, each of the bearings having an axle rotatably mounted therethrough; and a friction member having an axle hole receiving at least a portion of each said axle of the two bearings; wherein the hub has a central portion provided with a mounting hole for mounting the friction member and the two bearings; the mounting hole of the hub has a periphery provided with a protruding noncircular limit portion; the friction member has a periphery provided with a noncircular limit section inserted into and the mounting hole and secured with the limit portion of the mounting hole of the hub; the friction member is rotated in concert with the hub when the hub is rotated; an outer race of each of the two bearings is fixed to the hub and rotated when the hub and the friction member are rotated; the axle of each of the two bearings stay stationary when the hub and the friction member are rotated; the axle hole of the friction member has a peripheral wall provided with a plurality of pressing pieces abutting the axle of each of the two bearings and a plurality of pressing ribs abutting the axle of each of the two bearings.