A method for modifying the surface of carbon materials by electrochemical reduction of diazonium salts, in particular, for the production of composite materials, as well as modified in this way of carbon materials.

摘要

A self-supporting differential axle system for road or off-highway utility (or pleasure) vehicles comprises a first half-shaft (12-57) supporting a first drive wheel and fitted with a first sun wheel (16), a second half-shaft (11) supporting a second drive wheel and fitted with a second sun wheel (15), planet pinions (83) carried by a casing (59) rotatably mounted with respect to the first and second half-shafts and housing the first and second sun wheels (15, 16). It is characterized in that the first half-shaft consists of a self-supporting shaft (57) with a first sun wheel (16) offset from its centre, its longest portion supporting a first flange (13) of the first drive wheel (4) at its end. The assembly (57, 16, 33) making up the first half-shaft (12) and the entire extension (25, 26, 29) rotatably support the second half-shaft (11) consisting of a tube (11a) connecting the second sun wheel (15) to the second flange (14) of the second drive wheel (3).The said flange (14), comprising a compartment (56) housing the lateral adjustment system, links an antivibration system with the said first and second half-shafts (11-12), the drive casing (59) cotaining the first and second sun wheels (15, 16), the planet pinions (83), themselves having a remotely controlled lock (71) for neutralizing or releasing them, the adjustment and attachment means (22, 29, 27, 69), the two half-shafts consituting an assemby to be mounted on a bearing unit (7) by means (17, 13, 19 in figure 30).