Patent ID: 7690484
Filing Date: 2010-04-06
Classification: B22C,F16D

Abstract:
1. A disk-brake disk comprising: two plates coaxial with a central axis orthogonal to the plates; said plates each having a braking band with an inner and outer edge, said braking band having pillar elements distributed along the band in at least three concentric rings, an innermost ring, intermediate ring, and outermost ring, and are connected to the plates with link radii in a range from about 3 mm to 4 mm; said plates facing one another and spaced apart to form a space for an air-flow from the axis towards the outer edge of the band, the plates having facing surfaces from which the pillar elements extend transversely to connect the plates; said pillar elements disposed in the innermost ring having a cross-section with an area, a width, and a length, wherein the length is substantially longer than the width; said cross-section is tapered towards the central axis and towards the outer edge of the braking band, thereby forming a substantially rhombic cross-section; said pillar elements disposed in the intermediate ring having a cross-section with an area, a width, and a length, wherein the length is substantially longer than the width; said cross-section is tapered towards the central axis and towards the outer edge of the braking band, thereby forming a substantially rhombic cross-section; and the area of the cross-section of the pillar elements of the intermediate ring is approximately equal to the area of the cross-section of the innermost ring; said pillar elements disposed in the outermost ring having a cross-section tapered towards the central axis, wherein the pillar elements of the outermost ring have a first end having a width and a second end having a width wherein the first end is closer to the central axis.