Disc brake rotor for heavy-duty vehicles
AssigneeHendrickson USA, L.L.C.
InventorsJay D. White, Jeffrey S. Morris
Life of this patent
Estimating the term…
Abstract
The invention is directed to a rotor of a disc brake system for heavy-duty vehicles. The rotor includes an inboard disc and an outboard disc. The outboard disc is spaced apart from the inboard disc, and a plurality of pins extends between and rigidly connects the inboard disc and the outboard disc. A sleeve includes an inboard end and an outboard end, and is disposed inside an inner perimeter of the outboard disc. A connecting member extends between and rigidly connects an inner perimeter of the inboard disc to the inboard end of the sleeve. The inboard disc attachment to the sleeve and the interconnecting pins cooperate to improve the resistance of the rotor to thermal stress created during braking, thereby increasing the performance and the life of the rotor.
Claims29
A disc brake rotor for heavy-duty vehicles, said rotor comprising:
- a disc portion, said disc portion including:
- an inboard disc;
- an outboard disc, said outboard disc being spaced apart from said inboard disc;
- a plurality of pins extending between and rigidly connecting said inboard disc and said outboard disc;
- a carbon content of from about 2.80 weight percent to about 3.20 weight percent carbon, a silicon content of from about 1.80 weight percent to about 1.95 weight percent silicon, and a vanadium content of from about 0.05 weight percent to about 0.15 weight percent vanadium;
- a sleeve, said sleeve including an inboard end and an outboard end, and being disposed inside an inner perimeter of said outboard disc;
- and
- a connecting member, said connecting member extending between and rigidly connecting an inner perimeter of said inboard disc to said inboard end of said sleeve, whereby said rotor provides improved resistance to thermal stress that is created during braking.
A tone ring attachment for a disc brake rotor for heavy-duty vehicles, said tone ring attachment comprising:
- a disc brake rotor, said rotor including a disc portion;
- said disc portion being formed with a plurality of circumferentially-spaced lugs, each one of said lugs being formed with a groove;
- a tone ring, said tone ring being formed with a plurality of bosses, wherein each one of said bosses is received in a respective one of said lug grooves;
- at least one of said bosses being formed with an integral shim;
- and
- means for securing a position of said tone ring to prevent the tone ring from rotating relative to said disc portion.
A disc brake rotor for heavy-duty vehicles, said rotor comprising:
- a disc portion, said disc portion including:
- an inboard disc;
- an outboard disc, said outboard disc being spaced apart from said inboard disc;
- a plurality of pins extending between and rigidly connecting said inboard disc and said outboard disc;
- a carbon content of from about 2.80 weight percent to about 3.20 weight percent carbon, a silicon content of from about 1.80 weight percent to about 1.95 weight percent silicon, and a vanadium content of from about 0.05 weight percent to about 0.15 weight percent vanadium;
- a sleeve, said sleeve including an inboard end and an outboard end, and being disposed inside an inner perimeter of said outboard disc;
- and
- a connecting member, said connecting member extending between and rigidly connecting an inner perimeter of said inboard disc to said inboard end of said sleeve.
A disc brake rotor for heavy-duty vehicles, said rotor comprising:
- a disc portion, said disc portion including:
- an inboard disc;
- an outboard disc, said outboard disc being spaced apart from said inboard disc;
- a plurality of pins extending between and rigidly connecting said inboard disc and said outboard disc;
- a sleeve, said sleeve including an inboard end and an outboard end, and being disposed inside an inner perimeter of said outboard disc;
- and
- a connecting member, said connecting member extending between and rigidly connecting an inner perimeter of said inboard disc to said inboard end of said sleeve, the connecting member being formed with a plurality of circumferentially-spaced lugs, said lugs capturing a discrete tone ring.
A disc brake rotor for heavy-duty vehicles, said rotor comprising:
- a disc portion, said disc portion including:
- an inboard disc;
- an outboard disc, said outboard disc being spaced apart from said inboard disc;
- a plurality of pins extending between and rigidly connecting said inboard disc and said out board disc;
- a sleeve, said sleeve including an inboard end and an outboard end, and being disposed inside an inner perimeter of said outboard disc;
- and
- a connecting member, said connecting member extending between and rigidly connecting an inner perimeter of said inboard disc to said inboard end of said sleeve, wherein said connecting member is formed with a plurality of circumferentially-spaced lugs, said lugs capturing a discrete tone ring, whereby said rotor provides improved resistance to thermal stress that is created during braking.
Dependencies are inferred from the claim text.