Patent ID: 6056364
Filing Date: 2000-05-02
Classification: B60N

Abstract:
A headrest for a motor-vehicle seat having a backrest, said headrest comprising a yielding body, pair of parallel support rods projecting downwardly from the yielding body, and height adjustment means for adjusting the height of the yielding body relative to said seat backrest, including a series of positioning notches provided along each of said support rods and respective resilient locking members engaging said positioning notches normally in a releasable fashion, and further comprising an inertial mass associated with at least one of said resilient locking members and retaining means for maintaining said inertial mass in an inoperative rest condition in which the inertial mass permits transverse movement of said locking member relative to the respective support rod to allow height adjustment of said yielding body, said retaining means being releasable upon application to the headrest of a force exceeding a preset threshold value at least directed forwardly or rearwardly to enable the inertial means to move to an operative condition in which said at least one resilient locking member is made at least temporarily unreleasable relative to said positioning notches.