Patent ID: 8199453
Filing Date: 2012-06-12
Classification: H02K

Abstract:
1. A shaft current control brush ring assembly for a motor having a faceplate and a shaft, said assembly comprising: a cup having an outer band, an inner barrier and an outer lip, wherein the inner barrier and the outer lip are positioned on opposite axial sides of the outer band; a brush assembly disposed in said cup and held in axial compression between said inner barrier and said outer lip, said brush assembly having an electrically conductive annular inner plate, an electrically conductive annular outer plate and a plurality of electrically conductive filaments secured between said electrically conductive annular inner plate and said electrically conductive annular outer plate, said electrically conductive filaments having distal ends extending radially inwardly beyond said electrically conductive annular inner and annular outer plates; and said cup with said brush assembly therein being adapted to be disposed around the shaft and secured to the faceplate, such that electrical charge from the shaft is transferred to the cup via an electrical path formed by the electrically conductive filaments and the electrically conductive annular inner and annular outer plates.