Seat belt pre-tensioner

Details Seat belt pre-tensioner Seat belt pre-tensioner

1989-11-08

1991-03-12

Aschenbrenner, Peter A.

Chairs and seats

Body or occupant restraint or confinement

Safety belt or harness; e.g., lap belt or shoulder harness

74 2, 280806, B60R 2110

Patent

active

049990047

ABSTRACT:
A pre-tensioner arrangement applies tension to a safety belt in response to deceleration of a vehicle. A spring stores a force which is to be applied to the safety belt. A trigger mechanism comprises a lever which exhibits a mechanical advantage, one end of the lever engaging the spring, or an element associated with the spring, to retain the spring in a compressed state, and the other end of the lever engaging an over-dead-center linkage. An inertia mass is provided to engage the over-dead-center linkage to move it through the dead-center condition to release the lever and cause the spring to be released when severe deceleration is experienced.

REFERENCES:
patent: 2650655 (1953-09-01), Neahr et al.
patent: 3213506 (1973-01-01), Lipschutz
patent: 3951430 (1976-04-01), Schwanz et al.
patent: 3960023 (1976-06-01), Gralinski
patent: 3967506 (1976-07-01), Billot
patent: 3999780 (1976-12-01), Matsuoka et al.
patent: 4603591 (1986-08-01), Sibley et al.
patent: 4932722 (1990-06-01), Morozawa

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