Abstract: Slide rail for vehicle seat comprising two profiles, a latch and an unlocking device moveable into an active position to hold the latch in the unlocked position in order to allow the seat to slide forward, this unlocking device being then held in its active position by a pivoting hook. On this hook is mounted a pivoting actuator finger designed to retract elastically without causing the hook to pivot when it passes over a fixed stop when the seat slides forward, and to pivot in the opposite direction by releasing the hook when it meets the stop during a rearward movement of the seat.

Abstract: A seat comprises a base assembly adapted to be fixed to the body of the vehicle, an articulated support assembly comprising front and rear support links for a seat cushion of the seat each of which has two ends articulated about axes which are respectively fixed relative to the seat cushion and to the base assembly, devices for adjusting the angular position of the support links relative to the seat cushion, and devices for controlling the position of a seat back of the seat relative to the seat cushion. The control devices comprise a convex or concave articulated quadrilateral, which has four corners, a first corner is connected to the seat cushion and the second and fourth corners are connected to the seat back.

Abstract: A backrest structure for a vehicle seat comprises two hydroformed, tubular, horizontal crosspieces and vertical uprights engaged without any clearance in orifices punched into these crosspieces during hydroforming.

Abstract: A seat back structure comprises a lower edge around which it is articulated and next to which is fixed a lower crosspiece the ends of which have pivoting means. These pivoting means are carried by a base which is itself added by fitting in the ends of the lower crosspiece.

Abstract: The seat comprised a foam cushioning provided with a bearing face covered with an upholstery cover in which are defined connexion lines, along which a section of the sleeve is pulled into a slit provided in the cushioning by a fastening device. This device comprises an insert carried by the cushioning in correspondence with said slit and a plurality of ties the ends of which have two branches which are hooked to the insert and the edges so that the ties exert a traction on these edges.

Abstract: In order to ensure that a vehicle seat, having a supporting face and incorporating microcapsules of phase-change material having a phase transition temperature between 15 and 37° C., is comfortable to use in terms of temperature, the support face is heated or cooled before the seat is used so that the phase-change material is at its transition temperature when a user subsequently sits on the seat.

Abstract: An irreversible adjustment mechanism comprising a pivoting lever resiliently assisted to a neutral position, an intermediate pivoting part connected to the lever by a driving stage adapted to move the intermediate part only when the lever moves away from its neutral position, a fixed collar, an output part delimiting with the collar wedge-shaped hollow spaces directed in opposite directions, and a locking stage ensuring an irreversible transmission between the intermediate part and the output part with a certain angular play of the intermediate part. The intermediate part is braked with a braking torque sufficient to lock the intermediate part in each return movement of the input part to its neutral position.

Abstract: A slide rail for a removable vehicle seat comprises a fixed section and a shuttle sliding on this section. The shuttle carries a connector connected to the seat, and this connector is connected to an electrical circuit belonging to the vehicle floor by means of a flexible electrical cabling which is arranged under a flange of the fixed section and which is held taut by a resilient return drum.

Abstract: A vehicle seat comprises a base, a seat proper, and a seat back pivotally mounted on the base about an axis which is situated above the seat proper and in front of the seat back. The rear end of the seat proper is pivotally mounted on the seat back and the front end of the seat proper is mounted on the base via a linkage adapted to impose angular displacements on the seat proper that are less than half the angular displacements to which the seat back is subjected when the inclination of the seat back is adjusted.

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 motor vehicle seat includes a seat back which has a re-entrant rear face with a cavity closed by a sheet immobilized between two lateral uprights of the seat. Upholstery extends over the uprights and a cover covers the upholstery and is fixed into housings formed in the uprights. The sheet has lateral edges with hems into which two rods are inserted. The seat back structure includes arrangements for immobilizing the rods for fixing each of the rods into the housings and thereby to tension the sheet in the cavity, the cover being pressed into the housings by the rods.

Abstract: A motor vehicle seat slideway has an unlocking lever pivotally mounted on the moving rail of the slideway and urged towards a rest position, a cable connecting said lever to the seat back to unlock the slideway when the seat back is tilted down forwards, and a trigger pivotally mounted on the moving rail to pivot between a blocking position in which it holds the lever in its actuated position and a retracted position enabling the lever to return to its rest position. The trigger is urged resiliently towards its blocking position, and it also includes an actuator finger which, on coming into contact with an abutment secured to the stationary rail of the slideway, moves the trigger towards its retracted position.

Abstract: A vehicle seat includes a seat part which is formed by a cushion secured to a first armature itself supported by a second armature on which the backrest is mounted, it being possible for the first armature to be moved back and forth with respect to the second armature. The first armature includes a rear part which is suspended from the second-armature by at least one rear connecting piece, and the first armature further includes a front part which is linked to the second armature by a front mechanism compatible with the rocking motion of the rear part of the first armature. When a user is seated in the seat, the first armature is urged backward by the weight of the user.

Abstract: A backrest armature device for a motor vehicle rear seat having two frames which can be folded down independently of one another, each frame including at least a back panel, a horizontal lower beam which is formed in a steel having an elastic limit above 1100 MPa, at least two lateral uprights formed in a steel having an elastic limit which is at most equal to the elastic limit of the lower beam and which is above 450 MPa, and a horizontal upper beam formed in a steel having an elastic limit which is at most equal to the elastic limit of the uprights and which is above 400 MPa.