Abstract: A rapid locking device for an articulated seat including an outer casing having a central spindle connected to one side of a seat-back frame, the outer casing containing a second casing which is star-shaped and carries a swing bar on which are mounted idle serrated rollers placed between outer face of the star-shaped casing and inner face of the outer casing.

Abstract: A rapid locking device for an articulated seat including an outer casing having a central spindle connected to one side of a seat-back frame, the outer casing containing a second casing which is star-shaped and carries a swing bar on which are mounted idle serrated rollers placed between outer face of the star-shaped casing and inner face of the outer casing.

Abstract: The slide comprises two fixed lower sections and two upper sections. A gear-down mechanism is rigidly connected to one of the upper sections, the fixed lower section having an inner face provided with a toothing forming a rack. Reversible endless screws are mounted on a shaft able to rotate freely with respect to the rack and are blocked in the position chosen for the seat by shoes with inclined upper sections normally pressed against each other by springs an unlocked by flat portions of a bar having a controlled rotation. The seat is manually displaced.

Abstract: The round hinged-part comprises a fixed flange having a central opening receiving a main piece supporting a cam on which is mounted a double satellite with inner and outer tooth sets cooperating respectively with tooth sets of the fixed and movable flanges, a circular cut-off part of the fixed flange is used as a common centering path for the double satellite and for a central ovoid ring, and a ball-bearing is interposed between the movable flange and a ring mounted between the movable flange and the fixed flange.