Patent ID: 6948595

Claim:
Electromechanical multiple-disk brake actuator for a means of transport, in particular for an aircraft, characterized in that it includes, mounted on a frame ( 9 ): a first, reversible assembly including a central screw ( 1 ), a first electric motor ( 2 ) for rotating the central screw, a first nut ( 3 ) axially displaceable over the central screw when the latter is rotated, and means ( 4 ) interposed between the central screw and the first nut to permit reversible displacement of one, at least, of these two members; and a second, non-reversible assembly including an annular screw ( 5 ) externally integral with the first nut ( 3 ), a second electric motor ( 6 ) for rotating the annular screw and the first nut, a second nut ( 7 ) locked against rotation in relation to the frame ( 9 ) but axially displaceable over the annular screw when the latter is rotated, the annular screw ( 5 ) and the second nut ( 7 ) being in engagement via their threads which make their displacement non-reversible, and a piston ( 8 ) provided at one of the ends of the second nut ( 7 ) to press the disks ( 29 ) against one another in order to ensure the service braking of the means of transport during actuation of the first motor ( 2 ), and parking braking during actuation of the second motor ( 6 ), characterized further in that the central screw ( 1 ) comprises, on an opposite side from the piston ( 8 ), a cylindrical skirt ( 13 ) provided externally of a ring gear ( 14 ) meshing with an intermediate gear ( 15 ), itself meshing with a gear ( 16 ) keyed on an output shaft of the first motor ( 2 ).