Abstract: A cover for a gear motor unit, including a housing enclosing an electric motor and a gear mechanism which includes pinions that mesh with the inner surface of a rotationally fixed ring gear having a free edge. The cover also includes an axial projection, in particular, an internal skirt, capable of being positioned so as to at least partially bear against the free edge, the projection having, on a free end opposite the free edge of the ring, at least one elastically deformable element capable of at least partially bearing against the free edge of the ring so as to hold said crown in the housing in an axial direction of the ring.

Abstract: A reduction motor for a parking brake mechanical actuator of a drum brake comprising an electric motor and a reduction gearbox, in which the electric motor comprises an output shaft extending along a first axis, the reduction gearbox comprises an output shaft extending along a second axis, and in which the reduction motor also comprises at least one angle gear between the electric motor and the reduction gearbox or at the output of the reduction gearbox, the angle gear comprising a crown gear-pair comprising a pinion and a crown gear, the pinion being engaged with the output shaft of the electric motor and meshing with the crown gear which is a part of the reduction gearbox.