Device for permanently indicating an overstretching of a safety

Details Device for permanently indicating an overstretching of a safety Device for permanently indicating an overstretching of a safety

1988-04-25

1990-07-17

Cranmer, Laurie K.

Chairs and seats

Body or occupant restraint or confinement

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

297472, 40640, A63B 3500

Patent

active

049417100

ABSTRACT:
In a belt strap for a restraint system for restraining a passenger in a vehicle seat in the event of a collision, the belt strap includes regions which mechanically absorb energy. Such a seat belt includes elements for increasing the contact surface of the belt strap with the passenger's body so that the force transmitted to the passenger's body in the event of a collision is reduced. The belt may include colored material which discolors over time or plastically deformable colored threads to indicate if the belt's elasticity has decayed due to aging or due to over-extension of the belt. The belt has a modulus of elasticity which varies across its width so that the belt edges roll away from the passenger in the event of a collision. An information label indicating the expiration date of the usable duty lifetime of the safety belt may be provided.

REFERENCES:
patent: 2475588 (1949-07-01), Bierman
patent: 3820843 (1974-06-01), Seo et al.
patent: 3897106 (1975-07-01), Takada
patent: 4028876 (1977-06-01), Delatorre
patent: 4457251 (1984-07-01), Weman et al.
patent: 4662487 (1987-05-01), Koch

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