Multiple disc brake

A multiple disc brake comprising a first rotary disc fixed to a hub connected to a rotating member to be braked and at least one second rotary disc capable of sliding axially relative to the hub and to the first disc while at the same time being integral in terms of rotation with the first rotary disc, the axes of the hub and of the discs coinciding with one another, and a set of friction blocks having friction linings capable of being laid against faces of the disc by means of an actuating device, characterized in that a connection between the second rotary disc and the hub is made by means of at least two axially sliding shoes which are uniformly distributed about the hub and which are each accommodated in an axial receptacle of a cross-section matching that of the shoe, the shoes fixed to one of the inner periphery of the second rotary disc and the outer periphery of a flange part fixed to the hub, and the axial receptacles provided conversely on one of the outer periphery of the flange part fixed to the hub and the inner periphery of the second rotary disc, the axial receptacles including radially spaced open and closed sides and having concave rounded lateral stop flanks for transmitting retaining torque of the second rotary disc to the hub and means for radial retention of the shoes, the radial retention means comprising one edge of a respective lateral stop flank which projects into the open side of the receptacle and which closes over the corresponding shoe in order to retain the shoe at least in one radial direction of movement, each shoe having at least one convex rounded end which interacts with an associated concave rounded lateral stop flank of the receptacle, an outer edge of the associated concave rounded lateral stop flank closing over the convex rounded end of the shoe in order to trap the shoe radially in the receptacle with a tangential play allowing the shoe to execute small radial and rotational movements and axial sliding to bring the second disc into contact with the associated friction linings, at least one play-compensating spring interposed at one of between the second rotary disc and hub and between a sliding shoe and associated receptacle, and the flange part fixed to the hub having outer peripheral tongues to which inner peripheral tongues integral with the first rotary disc are fastened laterally, the axial receptacles being disposed between the outer peripheral tongues of the flange part, so that each receptacle receives a sliding shoe fixed to the secondary rotary disc.