Abrégé

A disc brake for railway vehicles comprising a pad and a disc on which the pad acts. The pad comprises a base plate and a plurality of friction elements fixed to the base plate. The friction elements comprise first friction elements made with a first friction material and second friction elements made with a second friction material. The first friction material has a compressibility modulus greater than that of the second friction material by a value greater than or equal to 1 MPa. The first friction elements are in a higher number than the second friction elements. A respective elastic element is interposed between each of the first friction elements and the base plate, whereas a respective rigid spacer is interposed between each of at least part of the second friction elements and the base plate.

Classes IPC  ?

• F16D 65/092 - Bandes, sabots ou patinsPivots ou leurs organes de support pour freins à engagement axial, p. ex. freins à disques
• F16D 69/02 - Composition des garnitures

Abrégé

A block for wheel brakes comprising a friction portion, in which a friction surface is defined, which, in use, acts upon a peripheral surface of a wheel in order to carry out the braking action, a support plate, which is fixed, in an irreversible manner, to a surface of the friction portion opposite the friction surface, and a base plate, which is fixed to the support plate and comprises a coupling element to fix the block as a whole to a brake system. The block comprises at least one elastic element placed between the support plate and the base plate. The presence of the elastic element creates a ventilation air space between the support plate and the base plate.

Classes IPC  ?

• F16D 69/04 - Fixation des garnitures
• F16D 65/06 - Bandes, sabots ou patinsPivots ou leurs organes de support pour freins à action extérieure
• F16D 65/807 - Caractéristiques relatives au refroidissement pour freins à action extérieure avec système de refroidissement ouvert, p. ex. refroidis par air
• F16D 65/78 - Caractéristiques relatives au refroidissement

Abrégé

A pad for disc brakes for railway vehicles includes a base plate, a plurality of friction elements fixed to the base plate, and a plurality of spacers, each of which is mounted between the base plate and a respective friction element. At least one fixing hole is obtained in each one of the spacers, which is engaged by a respective rivet to lock the friction element to the base plate. Each one of the spacers includes a plurality of metal plaques, each having a fixing hole obtained in the plaque. The metal plaques are stacked on top of one another so that the respective fixing holes coincide.

Classes IPC  ?

• F16D 65/12 - DisquesTambours pour freins à disques
• B60T 1/06 - Aménagements des éléments de freinage, c.-à-d. des parties de ceux-ci dans lesquelles se produit l'effet de freinage en agissant par retardement des roues par action autre que sur la bande de roulement, p. ex. par action sur une jante, un tambour, un disque ou sur la transmission
• B60T 5/00 - Modifications apportées aux véhicules pour faciliter le refroidissement des freins
• B61H 5/00 - Emploi ou aménagements de freins comportant de substantielles surfaces de freinage radiales pressées l'une contre l'autre selon un mouvement axial, p. ex. freins à disques
• F16D 65/097 - Moyens élastiques interposés entre les patins et les organes de support

Abrégé

A block (1) for wheel brakes comprising (i) a friction portion (2), in which a friction surface (5) is defined, which, in use, acts upon a peripheral surface of a wheel in order to carry out the braking action, (ii) a support plate (3), which is fixed, in an irreversible manner, to a surface (6) of the friction portion (2) opposite the friction surface (5), and (iii) a base plate (4), which is fixed to the support plate (3) and comprises a coupling element (4a) to fix the block (1) as a whole to a brake system. The block (1) comprises at least one elastic element (12) placed between the support plate (3) and the base plate (4). The presence of the elastic element (12) creates a ventilation air space (I) between the support plate (3) and the base plate (4).

Classes IPC  ?

• F16D 69/04 - Fixation des garnitures
• F16D 65/06 - Bandes, sabots ou patinsPivots ou leurs organes de support pour freins à action extérieure

Abrégé

A disc brake for railway vehicles comprising a pad and a disk on which the pad acts is provided. The pad comprises a base plate and a plurality of friction elements fixed to the base plate. The friction elements comprise first friction elements made of a first material and second friction elements made of a second material. The second material has a compressibility modulus (e.g., the pressure needed to compress the material by 1 mm) that is at least 5 MPa less smaller than the compressibility modulus of the first material. There may be more of the first friction elements than the second friction elements.

Classes IPC  ?

• F16D 65/092 - Bandes, sabots ou patinsPivots ou leurs organes de support pour freins à engagement axial, p. ex. freins à disques
• F16D 69/02 - Composition des garnitures
• F16D 69/00 - Garnitures de frictionLeur fixationEmploi pour travailler ensemble de matériaux ou de surfaces de friction spécifiées

Abrégé

A block (1; 11) for wheel brakes comprising a matrix (2; 12) made of a first sintered material and one or more inserts (3; 13) included inside the matrix and made of a second material having a hardness which is greater than the one of the first material. The inserts (3; 13) are arranged in a symmetrical manner relative to a transverse middle plane (X). The second material has a thermal diffusivity which is smaller by at least 1*10-6m2/s than the one of the first material. The block has a friction surface (4; 14) made of said first material for 95 to 60% and of said second material for 5 to 40%.

Classes IPC  ?

• F16D 69/02 - Composition des garnitures

Abrégé

A block (1; 11) for wheel brakes comprising a matrix (2; 12) made of a first sintered material and having one or more inserts (3; 13) included inside said matrix (2; 12) and made of a second material. The second material has a compressibility modulus (pressure needed to compress the material by 1mm) which is smaller than the one of the first material. The block has a friction surface (4) made of the first material for 95 to 60% and of the second material for 5 to 40%.

Classes IPC  ?

• F16D 69/02 - Composition des garnitures

Abrégé

A pad for disc brakes for railway vehicles is provided. The pad includes a base plate and friction elements fixed to the plate and arranged in at least two arcuate rows. Each row has friction elements with one same friction surface and a total friction surface ranging from 40% to 80% of the total friction surface of the friction elements of a neighboring external row. Each friction element of at least one neighboring internal row has a friction surface that is less than the friction surface of each friction element of the neighboring external row. The friction elements of each row are arranged on the base plate to act on a surface portion of a brake disc, which partially overlaps surface portions of the disc on which friction elements of a neighboring external row and friction elements of a neighboring internal row act.

Classes IPC  ?

• F16D 65/092 - Bandes, sabots ou patinsPivots ou leurs organes de support pour freins à engagement axial, p. ex. freins à disques
• B61H 5/00 - Emploi ou aménagements de freins comportant de substantielles surfaces de freinage radiales pressées l'une contre l'autre selon un mouvement axial, p. ex. freins à disques
• F16D 65/095 - Pivots ou leurs organes de support

Abrégé

A railway vehicle disk brake pad having a base plate; a number of supporting plates fitted to the base plate; and a number of friction members fixed to the supporting plates. The base plate has a number of perforated drawing portions, each of which has a projection on which a respective supporting plate rests directly, thus forming a gap between the base plate and the supporting plate.

Classes IPC  ?

• B61H 5/00 - Emploi ou aménagements de freins comportant de substantielles surfaces de freinage radiales pressées l'une contre l'autre selon un mouvement axial, p. ex. freins à disques
• F16D 65/092 - Bandes, sabots ou patinsPivots ou leurs organes de support pour freins à engagement axial, p. ex. freins à disques
• F16D 69/04 - Fixation des garnitures

Abrégé

A railroad and industrial vehicle disk brake pad having a supporting plate and a number of friction members. Each friction member is elongated in shape, with two curved parallel long sides, and is fixed to the supporting plate so that the curves of the long sides form a substantially 0° angle with respective concentric circles of a disk to which the pad fitted. To prevent displacement of the friction members, these are fixed to the supporting plate with the interposition of antirotation means.

Classes IPC  ?

• F16D 65/092 - Bandes, sabots ou patinsPivots ou leurs organes de support pour freins à engagement axial, p. ex. freins à disques

Abrégé

A railroad and industrial vehicle disk brake pad having a supporting plate and a number of friction members. Each friction member is elongated in shape, with two curved parallel long sides, and is fixed to the supporting plate so that the curves of the long sides form a substantially 0.degree. angle with respective concentric circles of a disk to which the pad fitted. To prevent displacement of the friction members, these are fixed to the supporting plate with the interposition of antirotation means.

Classes IPC  ?

• B61H 5/00 - Emploi ou aménagements de freins comportant de substantielles surfaces de freinage radiales pressées l'une contre l'autre selon un mouvement axial, p. ex. freins à disques
• F16D 65/095 - Pivots ou leurs organes de support
• F16D 69/04 - Fixation des garnitures

Abrégé

A disc brake pad (1) comprising a base plate (2), on which elongated elements for supporting friction elements (3) are fixed. The friction elements (3) are mounted, alone or in groups, on the ends of elastic support elements (4), the support elements (4) being cantilevered on the base plate (2) to provide projecting and freely movable ends which support the friction elements (3). The support elements (4) are placed on the base plate (2) with their main longitudinal axis oriented substantially perpendicular with respect to a ray passing through the centre of the brake disc. The disc brake pad centre coincides with rotary axis of the wheel or other rotating element to be braked. The circular portion or band of the element on which each friction element acts is as narrow as possible, thereby minimizing the peripheral speed difference between inner circumference and outer circumference of the annular bands engaged by the friction elements.

Classes IPC  ?

• F16D 69/04 - Fixation des garnitures