Patent ID: 7111901

Claim:
A headrest for a motor-vehicle seat, the headrest comprising: a main headrest body adapted to be mounted on a back of the seat; a cylinder extending along an axis and mounted on the main headrest body; a slide displaceable in a straight line axially along the cylinder; a head-engaging member carried on the slide and having a surface juxtaposable with a back of a head of a passenger in the seat, the head-engaging member and slide being jointly displaceable along the cylinder between an outer activated position and an inner rest position; a spring extending along the cylinder and braced between the slide and the main headrest body and urging the slide and head-engaging member outward into the outer activated position; return-lock means including a locking tooth on the slide, and a countertooth on the main headrest body engageable with the locking tooth after outward displacement of the slide toward the outer position from the inner position for preventing displacement of the slide and head-engaging member inward toward the inner rest position; releasable-coupling means including a primary element on the slide, and a secondary element on the main headrest body engageable with the primary element for releasably retaining the slide in the rest position, whereby, when the releasable-coupling means releases the slide, the slide moves outward in a straight line toward the outer position and the return-lock means inhibits inward movement back toward the inner position; and a control element extending along the cylinder and defining a control track cooperating and engageable with the locking tooth and carrying the countertooth.