# US 2014/0151167 A1 · Disc for a disc brake of the ventilated type

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- Number: US 2014/0151167 A1
- Document ID: US20140151167A1
- Status: Published application
- Kind: A1
- Application number: 14/117,432
- Filed: 2012-05-25
- Published: 2014-06-05
- Earliest claimed: 2011-05-27
- Assignees: Freni Brembo S.p.A.
- Inventors: Nino Ronchi; Leone Oberti
- Web page: https://patentgrep.com/patent/US20140151167A1

## CPC

- F16D 65/128: {characterised by means for cooling}
- F16D 65/0006: {Noise or vibration control}
- F16D 2065/1328: {internal cavities, e.g. cooling channels}
- F16D: COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES

## Abstract

A disc for a disc brake of the ventilated type comprising a braking band (2) defined by two plates (3, 4), which are co-axial to an axis, which are mutually facing and spaced to provide an interspace. The plates have facing surfaces (6, 7) from which elements (8, 9, 10) for the connection of the same plates transversally extend. Such facing surfaces define, together with the connecting elements, inside the interspace, ventilation ducts in order to cool the disc. The disc (1) com-prises a plurality of projections (11, 12) protruding from both facing surfaces of the two plates (3, 4). The projections are circumferentially arranged only in proximity of the outer edges of the plates in correspondence of the outlet of the ventilation ducts. Each projection (11) of a plate (3) is opposed to and aligned with a projection (12) of the other plate (4) along a direction parallel to the axis.

## Claims

### Claim 1

Disc for a disc brake of the ventilated type comprising a braking band defined by two plates co-axial to an axis (Z), which are mutually facing and spaced to provide an interspace, said plates having facing surfaces from which elements transversally extend to connect the plates, these facing surfaces defining, together with the connecting elements, inside said interspace, ventilation ducts in order to cool the disc, comprising a plurality of projections protruding from both facing surfaces of the two plates said projections being circumferentially arranged only in proximity of the outer edges of the plates in correspondence of the outlet of the ventilation ducts, each projection of a plate being opposed to and aligned with a projection of the other plate along a direction parallel to said axis (Z).

### Claim 2 (depends on 1)

Disc according to claim 1, wherein said projections are evenly arranged along the outer edges of the plates.

### Claim 3 (depends on 1)

Disc according to claim 1, wherein said projections are arranged at the outlet of each ventilation duct.

### Claim 4 (depends on 1)

Disc according to claim 1, wherein said projections have a circular section relative to a plane orthogonal to axis (Z).

### Claim 5 (depends on 1)

Disc according to claim 1, wherein said connecting elements consist of wings, having a radial development relative to said axis (Z).

### Claim 6 (depends on 1)

Disc according to claim 1, wherein said connecting elements consist of columnar elements, which are arranged along at least one outer row and an inner row, which are concentric relative to each other and to the plates.

### Claim 7 (depends on 6)

Disc according to claim 6, wherein the columnar elements of the outer row have a substantially circular section relative to a plane orthogonal to the axis Z.

### Claim 8 (depends on 6)

Disc according to claim 6, wherein each projection is arranged between two columnar elements of the outer row.

### Claim 9 (depends on 6)

Disc according to claim 6, wherein the projections of a plate are in equal number as that of the columnar elements of the outer row.

### Claim 10 (depends on 6)

Disc according to claim 6, wherein the columnar elements of the inner row have a rhomboidal-shaped section relative to a plane orthogonal to the axis Z.

### Claim 11 (depends on 6)

Disc according to claim 6, wherein at least one further intermediate row of columnar elements is provided.

### Claim 12 (depends on 11)

Disc according to claim 11, wherein the columnar elements of the intermediate row are offset relative to those of the outer row and inner row.

### Claim 13 (depends on 12)

Disc according to claim 12, wherein said projections are radially aligned with the columnar elements of the intermediate row.

### Claim 14 (depends on 6)

Disc according to claim 6, wherein the columnar elements are arranged between the two plates according to a quincuncial arrangement.

### Claim 15 (depends on 1)

Disc according to claim 1, wherein said projections are made from the same material as the plates and integral therewith.