Base for a vehicle seat and seat including such a base

Base for a vehicle seat, comprising:

• first and second slide rails each comprising first and second elements mounted slidingly in relation to each other in a longitudinal direction, one of which is intended to be fixed to the seat and the other to the vehicle, the first element having at least one locking device moveable between:
• firstly, a locked position in which said locking device engages with the second element of the slide rail so as to lock the first and second elements relatively to each other,
• and secondly, an unlocked position in which said locking device allows the first and second elements to slide relatively to each other, each locking device being loaded elastically towards its locked position,
• and a control device able to simultaneously move the locking device of the first and second slide rails to their unlocked position, this control device including operating means which can be actuated by a user so as to act simultaneously on first and second control means which are themselves able to unlock the two locking devices respectively.
• wherein the control device includes first and second pivoted transverse shafts each of which is supported at its two ends respectively by the first elements of the first and second slide rails, each of these first and second control shafts being rigidly connected to one of the control means and being so connected to the control device that actuation of the operating means moves each of the first and second control shafts in a direction corresponding to the unlocking of the locking devices of the two slide rails.