Disc rotor for preventing squeal

Details Disc rotor for preventing squeal Disc rotor for preventing squeal

1994-05-10

1995-05-23

Oberleitner, Robert J.

Brakes

Elements

Brake wheels

188264AA, 1921132, F16D 6512

Patent

active

054173132

ABSTRACT:
A hollow hole is radially formed in a rotor in at least one position on its circumference so that the minimum thickness between an inner surface of the hollow hole and each of the front and rear braking surfaces is selected to be not larger than 3 mm. Alternatively, in a ventilated rotor, at least one of a plurality of holes formed radially in the rotor is shaped into an expanded hole so that the minimum thickness between an inner surface of the hole and each of the front and rear braking surfaces is selected to be not larger than 3 mm. Two rows of small circular holes may be formed in a specific arrangement so as to penetrate a disc rotor. If longitudinal wave vibration is transmitted to the disc rotor, squeals due to an even number order resonance mode, that is, a resonance mode of the second, fourth, sixth order or the like, can be effectively attenuated by specially shaped hollow holes, reduced holes, or two rows of small circular holes formed in a disc rotor.

REFERENCES:
patent: 3809192 (1974-05-01), Stehle
patent: 4469203 (1984-09-01), Herbulot et al.

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