Abstract: The invention relates to a rotor (7) intended to be fastened in a lock stator by immobilizing means. According to the invention, the means for immobilizing the rotor (7) comprise a latch (11) having an elastically deformable protuberance (13) which is capable of engaging with an associated chamfered region (15) of the rotor (7) in order to immobilize said rotor in a mounting position.

Abstract: The invention proposes an arrangement of the type comprising a unit into which a badge is introduced manually into a housing in the unit, and which comprises a lever for immobilizing the badge in an active position in the unit and an electromagnet made to lock the immobilizing lever, wherein this arrangement comprises a member for manually unlocking the immobilizing lever which acts on the mobile core plunger of the electromagnet. It is applicable on board of a motor vehicle in which the anti-theft functions are partially or completely fulfilled by data processing, some of which data represents an authorized user of the vehicle.

Abstract: The invention proposed an arrangement of the type comprising a unit into which the medium is introduced manually, and the type in which a device comprises means for longitudinally holding the data medium in an active position and means providing assistance with introducing and extracting the data medium, wherein the data medium has a window, and where the unit comprises a lever for immobilizing the medium which is mounted so that it can pivot, between a stable immobilizing position towards which the immobilizing lever is elastically returned and in which an immobilizing finger of the immobilizing lever extends vertically into the window, and a stable retracted position, to allow the data medium to be extended from the unit.