A multi-disc brake is provided. The brake can include a radial wear pin cartridge for wear indication. The brake can include an integrated water jacket for cooling.

A braking band of a disc brake disc has two mutually facing plates having inner surfaces, either directly or indirectly facing and delimiting a gap, outer surfaces having flat and opposite circumferential portions which form braking surfaces and plate bodies having a predetermined plate thickness. The plates are joined to each other by connecting elements shaped as columns or ribs which project from one plate towards an opposite plate in the form of bridges which connect the plates. One of the plates has at least one ridge projecting from the plate into the gap without reaching the opposite plate, forming a localized narrowing of the gap and a thickening of the plate body. At least one ridge extends from a connecting element to an adjacent connecting element, connecting the connecting elements. At least one ridge extends along a circumferential direction connecting two adjacent connecting elements.

A braking band of a disc brake disc has two mutually facing plates having inner surfaces, directly or indirectly facing and delimiting a gap, outer surfaces having flat and opposite circumferential portions which form braking surfaces, and plate bodies having predetermined plate thickness. The plates are joined to each other by connecting elements shaped as columns or ribs which project from one plate towards an opposite plate in the form of bridges which connect the plates. At least one of the plates has at least one shaped pin projecting from a plate into the gap reaching the opposite plate, forming at least one localized narrowing of the gap and a thickening of the plate body, creating a localized increase of the predetermined plate thickness. At least one shaped pin extends from a first connecting element to an adjacent connecting element, connecting the connecting elements, and along a circumferential direction connecting at least two adjacent connecting elements.

A braking band of a disc for disc brake has a first plate and a second plate, a group of connecting fins connecting the first plate and the second plate, defining a module (M) repeated according to a circumferential direction (C-C). The first fin extends along a first longitudinal direction between a radially inner edge and a radially outer edge forming a circumferentially arched first stretch of first fin having a first concavity (R13) kept in the same sense along the entire extension of the first stretch of first fin in the first longitudinal direction, a circumferentially arched second stretch of first fin having a second concavity (R14), a circumferentially arched third stretch of first fin, and a circumferentially arched fourth stretch of first fin. The second fin develops along a second longitudinal direction between the radially inner edge and the radially outer edge. The first fin is shorter than the second fin.

The present invention relates to brake pad for a bicycle or a motorbike disc brake assembly comprising: a backing plate (1) having a front surface (2) and a rear surface (3), a friction pad (4) disposed on the front surface (2) or the rear surface (3) of the backing plate (1), and a backing plate extension (5) extending from the backing plate (1), wherein the backing plate extension (5) is provided with at least one cutout, wherein the at least one cutout has an inner wall surrounding the cutout, and wherein at least a part of the inner wall is provided at an inclination other than 90° with respect to the area of the backing plate extension (5) adjacent to the cutout.

A ventilated type brake disc rotor includes: a pair of sliding plates shaped annular and disposed opposite to each other in an axle direction; and joints formed to connect between the sliding plates and arranged along lines extending in a circumferential direction of the sliding plates. The joints include first joints arranged along a first line and second joints arranged along a second line located in an outer side with respect to the first line in a radial direction of the sliding plates. Each of the second joints includes a first width part and a second width part formed in an inner side with respect to the first width part in the radial direction. The second width part is less in circumferential width than the first width part, and is shaped to decrease in circumferential width as going inwardly in the radial direction.

A braking band of a disc for disc brake has a first plate and a second plate, a group of connecting fins connecting the first plate and the second plate, defining a module (M) repeated according to a circumferential direction (C-C). The first fin extends along a first longitudinal direction between a radially inner edge and a radially outer edge forming a circumferentially arched first stretch of first fin having a first concavity (R13) kept in the same sense along the entire extension of the first stretch of first fin in the first longitudinal direction, a circumferentially arched second stretch of first fin having a second concavity (R14), a circumferentially arched third stretch of first fin, and a circumferentially arched fourth stretch of first fin. The second fin develops along a second longitudinal direction between the radially inner edge and the radially outer edge. The first fin is shorter than the second fin.

A vehicle disc brake unit comprises a rotatable brake rotor and non-rotatable brake pad of caliper. During the vehicle braking, the non-rotatable brake pad presses against the rotating brake rotor, producing friction heat on frictional contact bands where the brake rotor and the brake pad engages with each other. A plurality of longitudinal vortex generators configured in fins is mounted either to a rotatable vehicle component such as hat of a brake rotor, or a non-rotatable vehicle component such as a protective plate, generating longitudinal vortices in the cooling air flows around the brake rotor, especially across the hottest frictional contact bands. The induced longitudinal vortices in the cooling air flows optimize the heat dissipation from brake rotor into atmosphere.

A ventilated type brake disc rotor includes: a pair of sliding plates shaped annular and disposed opposite to each other in an axle direction; and joints formed to connect between the sliding plates and arranged along lines extending in a circumferential direction of the sliding plates. The joints include first joints arranged along a first line and second joints arranged along a second line located in an outer side with respect to the first line in a radial direction of the sliding plates. Each of the second joints includes a first width part and a second width part formed in an inner side with respect to the first width part in the radial direction. The second width part is less in circumferential width than the first width part, and is shaped to decrease in circumferential width as going inwardly in the radial direction.

The flywheel device includes a sealed housing section; a rotor located in the sealed housing section where the rotor is held in a vertical position by a magnetic system; a controller coupled to the magnetic system; and a braking annular ring mounted to the sealed housing section below the rotor, where the rotor contacts the braking annular ring when the rotor is lowered or otherwise dropped from the vertical position. The controller perform operations to provide control signals to provide first power to the magnetic system to hold the rotor in the vertical position and provide second control signals to provide second power to the magnetic system to lower the rotor.