Abstract: A head-rest arrangement for a motor vehicle includes a rear part and a front part mounted on the rear part by a parallel arm linkage. A spring biases the front part forwardly. A releasable catch holds the two parts together until a sensor senses a rear impact. The front part is movable forwardly relatively freely once the catch is released. Any subsequent rearward movement of the front part is resisted by an energy-absorbing element which converts energy to a form no longer available to bias the front part of the head-rest forwardly.

Abstract: A head-rest arrangement for a motor vehicle includes a rear part and a front part mounted on the rear part by a parallel arm linkage. A spring biases the front part forwardly. A releasable catch holds the two parts together until a sensor senses a rear impact. The front part is movable forwardly relatively freely once the catch is released. Any subsequent rearward movement of the front part is resisted by an energy-absorbing element which converts energy to a form no longer available to bias the front part of the head-rest forwardly.

Abstract: A vehicle seat includes a support structure located beneath the seat and a squab located above the support structure. A back-seat extends substantially upwardly from the rear part of the squab. A mechanism pivotally connects the rear part of the squab to the support structure to permit the rearward tilting of the back-rest while tilting upwards the squab. A kinetic energy absorbing mechanism absorbs energy when the seat executes a tilting movement. The energy absorbing mechanism is located beneath the squab and is connected to a pivotal linkage between the support structure and a forward part of the squab of the seat.