Abstract: A compensator for lack of parallelism in a removable seat is provided, the seat including two rigid lateral endplates, crossmembers connecting the endplates, means of positioning the endplates in a slideway fixed to a floor of the vehicle, translational guidance means, and means of locking the endplates in the slideway, the crossmembers being tubular and cylindrical and collaborating with bearings of the endplates, the compensator including a cylindrical and stepped axial endpiece disposed at an end of each of the crossmembers, a sleeve made of viscoelastic material pushed tightly into the bearing in the corresponding endplate, the sleeve receiving the endpiece, an axial tapped hole for a screw for translational immobilization pressing a washer against an outer end face of the sleeve and an inner end face of the sleeve against the flange of the endpiece.

Abstract: The invention relates to seats of which the sitting structure comprises two rigid lateral endplates connected by crossmembers and each bearing means of positioning in a slideway fixed to the floor of the vehicle, translational guidance means and means of locking in the slideway, in which structure each of the crossmembers is tubular and cylindrical and collaborates with bearings borne by each of the endplates.