Patent ID: 9188181
Filing Date: 2015-11-17
Classification: F16D

Abstract:
1. A motorcycle brake disc rotor comprising: at least two layers, rigidly connected to each other, wherein each layer is a one-piece part made separately and has a radially external lateral surface and a radially internal lateral surface, opposite annular friction surfaces formed by outer surfaces of the outermost at least two layers, internal cooling through channels for cooling the rotor, formed in at least one of the at least two layers, extending from the radially external lateral surface to the radially internal lateral surface so as to direct air flow substantially in a radial direction and having a length defined by a distance between said lateral surfaces, wherein a width of the internal cooling through channels does not exceed 25% of the length thereof, and wherein said width increases in the direction to the radially external lateral surface by up to 1.5 mm per 1 mm of a distance, said distance limited to 3 mm from the radially external lateral surface.