Abstract: The runner comprises a mechanical locking system and a memorization system, comprising: a locking bar, a locking device that is movable between a normal position and a locking position in which it cooperates with the locking bar, an electromagnetic actuator that moves the locking device to its locking position when it receives a command from a control device.

Abstract: The invention concerns a rail comprising a fixed profiled section and a mobile profiled section sliding relative to the fixed profiled section. The body has a linking portion wherein the body is shaped like a plate having first and second opposite lateral surfaces, and an edge linking said first and second surfaces. A first profiled section comprises a groove. The liking portion is tightly fitted in the groove. The plate is attached to the first profiled section.

Abstract: Slider for a motor vehicle seat including a stationary profile section extending in a longitudinal direction and comprising a substantially planar base plate and at least one side shoulder, said base plate having a substantially constant width and including an attachment area for receiving a head of a fastening screw, wherein the stationary profile section has a local deformation increasing the width of the base plate and narrowing the shoulder to the extent that the raceway of the stationary profile section is blocked; a movable profile section; roller elements rolling along a raceway extending longitudinally on the shoulder of the stationary profile section and retained in position relative to each other by cage

Abstract: Hinge mechanism comprising first and second frames connected together by an adjustment device comprising a first set of gear teeth integral with the first frame and a first mobile toothed element engaging with the first set of gear teeth A second toothed element, mounted mobile on the second frame, engages with an additional set of gear teeth integral with the first frame.

Abstract: Method for manufacturing a hinge mechanism including: a movable flange and a stationary flange; holding means for ensuring holding of the stationary and movable flanges. The method includes the following steps: the holding means are applied to the stationary flange, a portion of the holding means being in radial contact with an outside portion of the movable flange, the holding means are fastened to the stationary flange, at the same time, a clamping pressure is applied to the holding means, this clamping pressure being directed radially in order to apply a radial pressure of the holding means on the movable flange, so as to take up the play in the hinge.

Abstract: The vehicle seat runner has a first runner element receiving a vehicle seat element, and a complementary runner element fastened to the vehicle. A first fin wall and a second fin wall that are mutually parallel and that are spaced apart from each other are connected together via a base wall. Each fin wall has an inside face, the inside faces of the two fin walls facing each other. The inside faces are connected to each other in an additional connection region situated under the base wall.

Abstract: Vehicle seat articulation mechanism intended to connect two elements belonging to the seat, the said articulation mechanism comprising first and second rigid cheek plates extending in parallel planes and intended to be attached respectively to the two seat elements, and an adjustment mechanism connecting the first and second cheek plates and suitable for allowing a relative angular adjustment between the said cheek plates. The first cheek plate is trapped against the second cheek plate by at least one rigid annular gusset which is welded against the inner face of the second cheek plate.

Abstract: A runner for a vehicle seat, the runner being of the type comprising a male rail (7) and a female rail (6) which define between them at least a first compartment (8) in which rolling bearing elements are disposed to enable said male and female rails to move relative to each other along a longitudinal axis. The runner further comprises at least one shoe (10) received in the first compartment (8) and mounted to slide relative to one of the rails, namely the male rail or the female rail, the shoe comprising at least a first rigid portion (11) having a shape substantially complementary to the shape of the first compartment in order to offer contact zones for contact with the male rail and with the female rail when the runner is subjected to deformation in a first direction.

Abstract: A runner for a motor vehicle seat, said runner comprising firstly first and second rails mounted to slide relative to each other in a longitudinal direction, and secondly a locking mechanism including an additional latch mounted substantially to pivot on a main latch about a second pivot axis, the additional latch being interposed between the main latch and a control member so that, when the control member moves from the locking position to the unlocking position, firstly the additional catch is pivoted about the second pivot axis, and secondly the additional latch and the main latch are pivoted about the first pivot axis.

Abstract: A track assembly for a motor vehicle seat, the track assembly comprising a male track and a female track. An internal space extends longitudinally between the male track and the female track. The cross-section of the internal space varies along the longitudinal axis of the track assembly. A seat equipped with such a track assembly.

Abstract: An irreversible adjustment mechanism comprising a casing, a pivotally-mounted lever urged resiliently towards a rest position, a pivotally-mounted intermediate member connected to the lever via a drive stage adapted to move the intermediate member only when the lever moves away from its rest position, a fixed ring, an outlet member co-operating with the ring to define hollow wedge-shaped spaces facing in opposite directions and receiving clamping bodies which are urged apart and which are flanked by two fingers that are part of the intermediate member. The casing comprises a base and a cover that are made of sheet metal and that are crimped together.

Abstract: A pivot mechanism comprising first and second frames linked so as to pivot, in which locking members may co-operate with teeth on one of the frames in order to lock the mechanism, and at least one stop member which is joined to the second frame and which is arranged so that the locking member abuts at an angle against said stop member if the pivot mechanism is subjected to a pivot torque in a first direction of rotation whilst the locking member is in its locked position: if this torque exceeds a threshold value, the stop member is displaced towards the over-locking member and pushes it against the teeth of the frame in order to lock it.

Abstract: A seat whose back is connected to the seat proper by first and second side hinges, each comprising two cheek-plates that can be locked together by toothed slugs under the control of a cam. The first hinge includes a resilient ring having notches in which the corresponding slugs can engage. The two hinges are interconnected by a link mechanism having lost motion so that actuating the cam of the first hinge unlocks the slugs in both hinges and also causes the slugs in the first hinge to disengage from the notches in the resilient ring, while actuating the cam of the second hinge does no more than release the slugs in both hinges while leaving the slugs of the first hinge engaged in their respective notches.

Abstract: A vehicle seat adjustment system has at least two tracks and each track includes: a stationary female number, a male member slidably mounted in the female member, and a unitary locking device for removably securing the male member in the female member. The device has a first end secured to the female member, an intermediate flexible section, and a vertically displaceable second end section. The second end section has an L-shaped flange received within a slot formed in an upper surface of the female member. Cutouts are longitudinally formed along a bend in the flange and normally engage: a) longitudinally formed notches in an upper surface portion of the male member; and b) longitudinally formed notches in a flange return of the female member, the return underlying an outwardly extending flange of the male member. Vertical displacement of the locking device removes the cutouts from the engaged notches thereby allowing sliding movement of the male member within the female member.

Abstract: The hinge device for a vehicle seat comprises an intermediate plate carrying first and second cheek-plates, one designed to be fixed to the seat-back and the other to the seat proper. The first cheek-plate is connected to the intermediate plate via a mechanism enabling the inclination of the seat-back to be adjusted in substantially continuous manner. The second cheek-plate is connected to the intermediate plate via a locking mechanism controlled by the same handle as the mechanism for adjusting the inclination of the seat-back.

Abstract: A vehicle seat slideway has a male channel member whose two flanges are outwardly extended by flaps extending at an angle outwards and towards the web of the male channel member to a vertical end portion, and a female channel member having flanges extended by reentrant troughs penetrating between the flanges and the flaps of the male channel member. Same-diameter balls are disposed firstly between each flap and the corresponding reentrant trough, bearing against at least the vertical end portion of the flap and against a sloping flat portion which extends an initial horizontal portion of the reentrant trough, and secondly against the flap and a corner zone situated at the junction between the web and the corresponding flange of the female channel member.

Abstract: The slideway comprises first and second section members that are slidable relative to each other, together with a locking mechanism for locking the seat longitudinally, which mechanism comprises four resiliently flexible blades each including teeth suitable for co-operating, in a locking position, with notches formed in the second section member. The first section member has unlocking means suitable for acting simultaneously on all four blades, causing them to bend elastically so that the teeth of all of the blades are disengaged from the notches. The blades are disposed relative to each other in such a manner that in most positions of the first section member relative to the second section member, at least one of the blades meshes with the notches.

Abstract: Within a housing 4, the hinge includes a fixed cheek plate 1 and a moving cheek plate 2, one secured to the seat proper and the other secured to the seat back. Slugs 5 are mounted to move radially in grooves 7 of the stationary cheek plate and can hold the hinge in position by their outwardly directed sets of teeth 6 engaging in an inwardly directed set of teeth 3 of the moving cheek plate. The user can move the slugs by means of a lever and a central cam 8. The moving cheek plate 2 includes a set of notches 20 concentric with the set of teeth 3 and having a notch pitch that is equal to a multiple of the locking pitch of the set of teeth 3; at least one of the slugs 5 has a tooth 12 suitable for engaging in the set of notches 20 so as to enable the outwardly directed set of teeth 6 of the slug 5 to mesh in the inwardly directed set of teeth 3 of the second cheek plate 2, thereby obtaining a notch pitch that is considerably greater than the locking pitch.

Abstract: An articulation for a vehicle seat backrest, comprising a closed box formed of a seat part cheek and of a backrest cheek with internal toothing, the box containing followers which are toothed externally and can be shifted radially under the control of a rotary cam. Each follower comprises a first peg capable of interacting with a track of the backrest cheek in order to hold the follower in the unlocked position and a second peg capable of interacting with an opening of a plate connected to the cam in order positively to control the unlocking of the follower.

Abstract: A slide for a vehicle seat comprises a first bar having a narrow channel section with vertical flanges that are extended outwardly by rims, and a second bar having a wide upside-down channel section enveloping the first bar with the ends of the vertical flanges being extended inwardly by reentrant troughs, the two bars being shaped to form four ball tracks between them. Each outer vertical flange has an outwardly directed ridge, and each rim has an extension suitable for hooking against the inside face of a ridge when a vertical force is exerted tending to pull the two bars apart.