Key Safety Systems, Inc.

Amaya Munoz

John Bell

Martyn N Palliser

Andrew Park

A seat belt retractor has a rotating spool for retraction or pay-out of seat belt webbing. A locking ring is attached to one end of the spool. The locking ring is locked against rotation when a crash is sensed. A force limiting means allows further pay-out of the seat belt webbing after the locking ring has locked. Coupled in the force path between the spool and the locking ring, the force limiting means has a primary force limiting means; and a secondary force limiting means. The force limiting means include an elongate deformable member, arranged such that relative rotation between the spool and the locking ring causes a predetermined length of the deformable member to be deformed during a first stage of load limiting. The cross-sectional area of the deformable member is uniform over a major portion of the predetermined length and is reduced over at least one minor portion located a distance from the end of the member.

Seat belt retractor

A vehicle seat that is removable from a vehicle has an automatic buckle release mechanism. The vehicle seat has a seat base and a seat back. To prepare the seat for removal from the vehicle the seat back is pivoted about an axis towards the seat base. The seat base has a seat belt buckle attached thereto. The seat belt buckle has a release mechanism for releasing from the seat belt buckle a buckle tongue that is assembled with a seat belt webbing. The seat back has an actuator arm attached thereto that pivots with the seat back. The actuator arm causes the release mechanism of the seat belt buckle to operate in a buckle tongue releasing manner when the seat back is pivoted towards the seat base.

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Carlisle, United Kingdom

Amaya Munoz