Patent ID: 6655508
Filing Date: 2003-12-02
Classification: F16D

Abstract:
A method of reducing noise in a disc brake rotor having a plurality of vanes disposed between a pair of friction plates arranged coaxially in a parallel spaced apart relationship, the method comprising:stiffening a radially inner portion of the brake rotor with a plurality of inverted T-shaped vanes extending between the pair of friction plates, each of the inverted T-shaped vanes having a proximal end, a distal end, angular portion and a mid-portion extending between the angled portion and the distal end, the proximal end of the T-shaped vanes having a first width greater than a second width of the mid-portion, the proximal end adjacent an extending portion of the friction plates and the distal end adjacent an outer periphery of the friction plates; moving nodal circle/nodal diameter mode frequencies higher in spectrum than radial mode frequencies; and reducing hybrid vibration modes in an audible frequency range.