Land vehicles – Wheeled – Attachment
Patent
1995-01-20
1996-07-02
Ellis, Christopher P.
Land vehicles
Wheeled
Attachment
280805, 297480, 297472, B60R 2236
Patent
active
055314791
ABSTRACT:
An apparatus (10) comprises seat belt webbing (26), which is extensible about a vehicle occupant, and an actuatable pretensioner (50). The pretensioner (50) includes a web clamp mechanism (100, 130, 132). When the pretensioner (50) is actuated, the web clamp mechanism (100, 130, 132) clamps against the seat belt webbing (26) and moves to an actuated position to tension the seat belt webbing against the vehicle occupant. An energy absorbing mechanism (90) dissipates energy transferred to the seat belt webbing (26) by the vehicle occupant after the web clamp mechanism (100, 130, 132) moves to the actuated position. The energy absorbing mechanism (90) comprises a member (92) and a cutter (75) for cutting the member. A wedge block assembly (108) connects the web clamp mechanism (100, 130, 132) to the member (92) after the web clamp mechanism has moved to the actuated position. The web clamp mechanism (100, 130, 132) and the member (92) thereafter move together when a predetermined force is applied to the seat belt webbing (26) by the vehicle occupant. The cutter (75) is supported in a position to cut the member (92) as the member moves with the web clamp mechanism (100, 130, 132).
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Ellis Christopher P.
TRW Vehicle Safety Systems Inc.
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