Disc brake with graphite friction shoes

Claim 2

A DISC BRAKE COMPRISING AN ALTERNATING ARRANGEMENT OF ROTORS AND STATORS, EACH INCLUDING A PLURALITY OF SECTORS, EACH SECTOR BEING PROVIDED WITH SOCKETS WITH GRAPHITE FRICTION SHOES FIXED IN SAID SOCKETS, AT LEAST ONE PORTION OF EACH OF AN ADJACENT ROTOR AND STATOR COMPRISING ROUGHENING ELEMENTS DISTRIBUTED IN SAID PORTION SUCH THAT WHEN THE ROTORS ROTATE, SAID ROUGHENED ELEMENTS RUB ON THE SURFACE OF THE SHOE IN THE ADJACENT CONFRONTING SOCKET, SAID ROUGHENING ELEMENTS COMPRISING A PLURALITY OF SEPARATE ELEMENTS RESPECTIVELY ACCOMODATED WITH ITS ASSOCIATED SHOE IN A COMMON RESPECTIVE SOCKET, SAID PLURALITY OF SEPARATE ELEMENTS BEING ARRAYED AT LEAST AS A PORTION OF A RING WHICH IS CONCENTRIC WITH ITS RESPEC-

Claim 3

A disc brake according to claim 1, wherein the shoes are made of a graphite which has been formed at 2800*C and purified, and the roughening elements are made of a carbon which has been formed at 1200*C.

Claim 4

A disc brake as claimed in Claim 1 wherein said attachment means comprises a rivet.

Claim 5

A disc brake comprising an alternating arrangement of rotors and stators, each including a plurality of sectors, each sector being provided with sockets with graphite friction shoes fixed in said sockets, at least one portion of each shoe of an adjacent rotor and stator comprising roughening elements distributed in said portion such that when the rotors rotate, said roughening elements rub on the surface of the shoes of said rotor and stator, said roughening elements being constituted of a graphite material which is different from the graphite material of the shoes, each roughening element comprising a ring concentric with its respective shoe and subdivided into a succession of adjacent segments, said ring being accommodated within the same socket as its respective shoe.

Claim 6

A disc brake comprising an alternating arrangement of rotors and stators, each including a plurality of sectors, each sector being provided with sockets with graphite friction shoes fixed in said sockets, at least one portion of each shoe of an adjacent rotor and stator comprising roughening elements distributed in said portion such that when the rotors rotate, said roughening elements rub on the surface of the shoes of said rotor and stator, said roughening elements being constituted of a graphite material which is different from the graphite material of the shoes, each roughening element comprising a ring concentric with its respective shoe and subdivided into a succession of adjacent segments, said ring being accommodated within the same socket as its respective shoe.

Claim 7

A disc brake according to claim 4, comprising a central disc in the socket with said ring and serving as said shoe, said disc being provided with a hole having a frustoconical wall and with external lateral walls of frustoconical shape, a conical collar of complementary shape fitted into said hole, said segments of the ring of the roughening element being disposed at the periphery of the central disc, each being provided with an internal lateral wall of frustoconical shape, complementary with that of the external lateral walls of the central disc, and a rivet securing said central disc, said roughening elements and said conical collar in the associated socket, said rivet passing through the conical collar and the respective sector in which the socket is formed.

Claim 8

A disc brake comprising an alternating arrangement of rotors and stators, each including a plurality of sectors, each sector being provided with sockets with graphite friction shoes fixed in said sockets, at least one portion of each shoe of an adjacent rotor and stator comprising roughening elements distributed in said portion such that when the rotors rotate, said roughening elements rub on the surface of the shoes of said rotor and stator, said roughening elements being constituted of a graphite material which is different from the graphite material of the shoes, a central disc in the socket with the roughening elements and serving as the shoe in this socket, said disc being provided with a hole having a frustoconical wall and with external lateral walls of frustoconical shape, a conical collar of complementary shape fitted into said hole, said roughening elements being disposed at the periphery of the central disc and each being provided with an internal lateral wall of frustoconical shape, complementary with that of the external lateral walls of the central disc, and a rivet securing the central disc, said roughening elements and said conical collar in the associated socket, said rivet passing through the conical collar and the respective sector in which the socket is formed.

Claim 9

A disc brake comprising an alternating arrangement of rotors and stators, each including a plurality of sectors, each sector being provided with sockets with graphite friction shoes fixed in said sockets, at least one portion of each shoe of an adjacent rotor and stator comprising roughening elements distributed in said portion such that when the rotors rotate, said roughening elements rub on the surface of the shoes of said rotor and stator, said roughening elements being constituted of a graphite material which is different from the graphite material of the shoes, a central disc in the socket with the roughening elements and serving as the shoe in this socket, said disc being provided with a hole having a frustoconical wall and with external lateral walls of frustoconical shape, a conical collar of complementary shape fitted into said hole, said roughening elements being disposed at the periphery of the central disc and each being provided with an internal lateral wall of frustoconical shape, complementary with that of the external lateral walls of the central disc, and a rivet securing the central disc, said roughening elements and said conical collar in the associated socket, said rivet passing through the conical collar and the respective sector in which the socket is formed.