Patent ID: 9624921
Date: 2017-04-18
CPC Classifications: F04B,F16C,Y10T

Claim:
1. A roller assembly comprising: a circular central section with a hub, the roller assembly rotating about the hub on a rotation axis of the hub; a plurality of curved flexible arms coupled to the central section, each of the plurality of curved flexible arms located circumferentially around a periphery of the central section and generally co-planar with the central section in a plane perpendicular to the rotation axis of the hub; a plurality of spring pins, one spring pin coupled to each of the plurality of flexible arms; a plurality of arms coupled to the central section such that each arm is capable of pivoting independently with respect to the central section; and a plurality of rollers, one roller coupled to each of the plurality of arms, each roller rotating about a roller rotation axis; wherein each of the plurality of flexible arms biases one of the plurality of arms away from the central section in a direction generally parallel to the rotation axis of the hub, and the roller rotation axis of each roller is perpendicular to the rotation axis of the hub.