Tone ring with protective filler

Abstract

A tone ring for a heavy-duty vehicle anti-lock braking system (ABS) that includes a filler disposed within spaces or notches between teeth formed in the tone ring. The filler is formed of a material that does not interfere with the ability of an ABS sensor to sense the teeth. In one embodiment, the filler includes a plurality of protrusions disposed within the spaces formed between the teeth. The plurality of protrusions are integrally formed with a base that extends circumferentially around the side of the tone ring opposite the ABS sensor. In another embodiment, the filler includes a plurality of fillings disposed within notches formed between the teeth. The filler prevents road debris and/or contaminants from damaging the tone ring teeth and damaging and/or misaligning the ABS sensor. A thin coating can extend over the tone ring teeth and the plurality of protrusions or fillings to encapsulate the teeth.

Dependencies are inferred from the claim text.