Head-rest arrangement
First Claim
1. A head-rest for a vehicle seat having a seat back, the head-rest being mounted in position on the vehicle seat in such a way that the head-rest can move from an initial position to a final position in which the head-rest is located forwardly of the initial position, comprising a spring mechanism adapted to move the head-rest from the initial position to the final position, release means actuated by movement of a pressure responsive element within the seat back to prevent operation of the spring mechanism, and to release the spring mechanism to permit operation of the spring mechanism when pressure is applied to the pressure responsive element during a rear impact.
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Accused Products
Abstract
A head-rest arrangement for a vehicle seat includes a head-rest mounted in position on a vehicle seat so that it can move forwardly from an initial position to a final position. A spring mechanism is provided to move the head-rest. A release mechanism is actuated by movement of a pressure responsive element within the back of the seat to initially prevent operation of the spring mechanism, and to release the spring mechanism when pressure is applied during a rear impact.
32 Citations
11 Claims
- 1. A head-rest for a vehicle seat having a seat back, the head-rest being mounted in position on the vehicle seat in such a way that the head-rest can move from an initial position to a final position in which the head-rest is located forwardly of the initial position, comprising a spring mechanism adapted to move the head-rest from the initial position to the final position, release means actuated by movement of a pressure responsive element within the seat back to prevent operation of the spring mechanism, and to release the spring mechanism to permit operation of the spring mechanism when pressure is applied to the pressure responsive element during a rear impact.
Specification