Patent ID: 7487862
Filing Date: 2009-02-10
Classification: B60T,F16D,G01P

Abstract:
1. A disc brake rotor assembly comprising: a cast iron rotor for rotation about an axis, the cast iron rotor having a cylindrically shaped interior surface and a plurality mutually isolated exciter ring engagement points distributed around the cylindrically shaped interior surface; and an exciter ring made of a corrosion resistant material, which exhibits a different thermal coefficient of expansion than does the iron of the rotor, which is flattened to define opposite major surfaces and which has a plurality of tangs arranged radially with respect to one another and extending from one major surface for snap fit engagement with the plurality of engagement points on the cylindrically shaped interior surface of the cast iron rotor; and the snap fit engagement providing resistance to removal of the exciter ring after fitting of the exciter ring to the rotor and preventing clocking of the exciter ring on the rotor even notwithstanding thermally related differential expansion of the cast iron rotor and the exciter ring.