Disc brake rotor
AssigneeDelphi Technologies, Inc.
InventorsRobert S. Ballinger, Kenneth B. Dunlap, Michael A. Riehle
Life of this patent
Estimating the term…
Abstract
A disc brake including a pair of friction plates arranged coaxially in a parallel, spaced-apart relationship and a plurality of vanes extending between the pair of friction plates, each of said vanes having a proximal end, a distal end and a mid-portion extending between the proximal end and the distal end, the proximal ends of a plurality of the vanes having a first width, the mid-portion having a second width, the first width being substantially greater than the second width. The vanes can include a T-shaped portion adjacent the proximal end.
Claims6
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.
A rotor for a disc brake having a plurality of vanes disposed between a pair of friction plates arranged coaxially in a parallel spaced apart relationship, comprising:
- means for stiffening a radially inner portion of the brake rotor with a proximal portion of a plurality of vanes;
- means for moving nodal circle/nodal diameter mode frequencies higher in spectrum than radial mode frequencies;
- and
- means for reducing hybrid vibration modes in an audible frequency range.
Dependencies are inferred from the claim text.