Patent ID: 6739437
Filing Date: 2004-05-25
Classification: F16D

Abstract:
A method of fabricating a vented disc brake rotor having first and second annular braking surfaces jointly defining inner and outer circumferential surfaces and a central region, and a hat region disposed in the central region and adapted for mounting said rotor to a vehicle, the method comprising:providing a die configured to produce a plurality of directing walls disposed between the first and second braking surfaces, a plurality of flow channels, a separating wall disposed in each flow channel, and a plurality of directing fins projecting into the central region; each of the plurality of flow channels extending from the inner circumferential surface to the outer circumferential surface and having a substantially constant total cross-sectional area from the inner circumferential surface to the outer circumferential surface; each separating wall extending from a first end at a point between the inner and outer circumferential surfaces to a second end at the outer circumferential surface, dividing a flow channel into first and second subchannels, and having a width that increases from the first end to the second end; each of the plurality of directing fins disposed adjacent a flow channel and defining a directing surface adapted to direct air into the flow channel; casting a material into the die; and removing the die.