Patent ID: 9464680
Filing Date: 2016-10-11
CPC Classification: F16D

Claim Text:
1. A disc for disc brakes arranged around a rotational axis, comprising: a braking band extending around said rotational axis and forming two opposite braking surfaces suitable for cooperating with brake caliper pads, arranged astride said braking band; said disc defining an axial direction coincident or parallel to said rotational axis, a radial direction defining a radially external direction when moving away from said axial direction, as well as a radially internal direction when approaching said axial direction, as well as a circumferential direction orthogonal to said axial direction and said radial direction; said disc further comprising a drum; said drum comprising a connection flange, having a connection portion suitable for connecting the drum to a support hub onto which a rim of a vehicle wheel is connected; said connection portion of said connection flange comprising a surface facing the support hub and an opposite surface facing the wheel rim; said surface facing the support hub comprising a housing suitable for accommodating a portion of the support hub; said drum further comprising an edge arranged radially outside said portion for connecting the drum to the support hub; said edge being arranged radially outside said housing suitable for accommodating the support hub; said drum further comprising a drum body connecting said edge to the braking band; said drum body delimiting an outer space between the drum and the wheel rim; said drum body being suitable for creating an interspace between the drum and the support hub accommodated therein, said interspace axially traversing, according to the axial direction, substantially the entire drum until it reaches said edge; wherein at least one opening is formed between an edge of the connection flange and the edge of the drum to facilitate movement of air through the interspace and away from the braking band; wherein said at least one opening is delimited by walls having at least one section inclined with respect to the axial direction and wherein said at least one opening is connected to the interspace by means of an annular groove having at least two walls parallel and opposite to each other oriented according to a direction substantially inclined with respect to the axis.