Patent ID: 8342606

Claim:
A vehicle seat, having a backrest on which a head restraint is fitted, said head restraint having a cushion for supporting the head of a seat occupant who may or may not be wearing a protective helmet, wherein the cushion has at least three stable positions: a first position for cervical support of the seat occupant's head, in which position the head restraint provides cervical support whether or not a helmet is being worn, a second position for occipital support of the seat occupant's head, in which position the head restraint provides occipital support when a helmet is not being worn, a third position for occipital support of the seat occupant's head, in which position the head restraint provides occipital support when a helmet is being worn, wherein the cushion is attached to a first, hollow rotary shaft, the axis of which coincides with a rotational axis of the cushion and which slides and revolves about a second, coaxial rotary shaft having ends fixed by two mutually parallel plates positioned laterally on an upper part of the seat backrest.