Curved slide member

A curved slide member formed of two curved and parallel sections as provided with horizontal control means in a side of an arcuate movable member particularly for longitudinal setting of a vehicle seat both frontwardly and rearwardly for a person occupying the seat to have a seated position as well as a lying position and also any intermediate position therebetween, comprising in combination:

• an inner section included as one of the two curved and parallel sections;
• an outer section included also as one of the two curved and parallel sections, with one of said inner and outer sections being movable as a mobile section relative to the other as a fixed section, which is fixed to a floor of the vehicle;
• a Z-shaped rack additionally fixedly mounted on one of said inner and outer sections, said rack having a toothing;
• and
• a pinion carried by that inner section or outer section on which said Z-shaped rack is not mounted, said pinion being in meshing engagement with said toothing of said rack so that said pinion drives in translation the mobile section with respect to the fixed section;
• said inner and outer sections having a radius of curvature in a range of from 500 to 800 mm, said outer section being mobile;
• means for preventing accidental reversal of the rotation of said pinion;
• a device having a memory for storing a given position of said slide member;
• and
• a locking device for stopping rotation of said pinion in the event of manual actuation.