Land vehicles – Wheeled – Attachment
Patent
1999-01-15
2000-11-14
Rice, Kenneth R.
Land vehicles
Wheeled
Attachment
2808012, 280808, B60R 2236
Patent
active
061458813
ABSTRACT:
A pyrotechnic piston and cylinder assembly raises a belt guide, pulling two segments of a safety belt upwardly away from a vehicle seat. The extension of the two segments removes slack from the safety belt. After the piston is fully extended, a pair of wedges jam an inner wall of the cylinder, providing resistance to the retraction of the shaft into the cylinder. As the belt forces overcome the resistance from the wedges, the piston is pushed back into the cylinder and a portion of belt is permitted to extend, relieving tension in the safety belt. The wedges plastically deform the inner wall of the cylinder, thereby absorbing a portion of the energy of the collision.
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Forsyth Douglas L.
Miller, III H. John
Norgan-Curtiss Lynette
Breed Automotive Technology Inc.
Rice Kenneth R.
Seitzman Markell
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