Patent ID: 9086139
Filing Date: 2015-07-21
Classification: F16B,F16C,F16H,Y10T

Abstract:
1. A pulley system for a rotary machine, comprising: a pulley, a rolling bearing and a plate, wherein the pulley is assembled to an outer ring of the rolling bearing and assembled to the plate, and wherein an inner ring of the rolling bearing is configured to be mounted on a hollow static shaft of the rotary machine and held axially in place by an elastic ring circumferentially surrounding the shaft, and wherein the plate is configured to transmit a rotational movement from the pulley to a central hub of the plate, and wherein the plate has an axial first annular surface positioned adjacent to an axial end of the shaft and configured to accept the elastic ring, the first annular surface having a first end located a first distance from the rolling bearing and a second end located a second distance from the rolling bearing, the second distance being greater than the first distance, and wherein an unstressed inner diameter of the elastic ring is smaller than an inside diameter of the inner ring, and the plate has at least two mounting drillings distinct from a center opening of the hub and passing axially through the plate, and wherein a radial second, flat, annular surface of the plate has a first end at the second end of the axial first annular surface, a mean diameter of the radial second, flat, annular surface being greater than a diameter of the axial first annular surface, and wherein the mounting drillings pass through the radial second, flat, annular surface.