Autoliv Development Ab

Timothy Barnett

Tommy Andersson

A vehicle seat comprises an inner framework, the inner framework defining a first portion ( ) to be received within the squab of the seat and the second portion ( ) to be received within the back of the seat. The second portion ( ) is mounted on the first portion ( ) for rearward pivotal movement about a predetermined pivotal axis ( ). Connected between an element ( ) which moves in response to movement of the second portion of the framework ( ) and the first portion of the framework ( ) is an element that provides a mechanical advantage, in the form of a lever arm ( ) and a damper in the form of a gas springs ( ). The mechanical advantage provided by the lever arm element ( ) changes as the second portion of the framework ( ) pivots rearwardly about the pivot axis ( ). Thus, in a rear impact, an occupant of the seat is given a gradual acceleration.

Vehicle seat

A vehicle seat, the seat comprises a squab and a back. The back is mounted for pivotal movement, relative to the squab, about a predetermined pivotal axis ( ). The back is provided with a frame ( ) supporting a head-rest, the said frame is movable between a lower position and an upper position. The head-rest carried by the frame ( ) is located a greater distance from the top of the back of the seat when the frame ( ) is in the elevated position. Means are provided to move the frame ( ) from the lower position to the upper position in response to said rearward pivotal movement of the back of the seat about the predetermined pivotal axis ( ).

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Oxt, United Kingdom

Timothy Barnett