Importance

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Abstract

In improvement in locking pawl activating for a safety belt retractor mechanism of the type having a webbing storage spool, a locking ratchet wheel associated with the spool and a locking pawl for engaging the locking ratchet wheel is described wherein a programming pawl, which is mounted for movement from a nonactivated position to an activated position with regard to a surrounding lock cup which is adapted to operate the main locking pawl, is spring bias to a nonactivated position by a straight wire spring which is mounted by a looped end thereof to a pin protruding from an end of the spool to orbit therewith. Rotation of the spool causes rotation of the programming pawl which is pivotally mounted thereto in association with the spring and has a camming pin to camming surface engagement with an otherwise freely rotatable inertial mass which cams the programming pawl to its activated position when the acceleration of the spool causes the mass to lag spool rotation overcoming the bias of the aforementioned spring on the programming pawl.

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First Claim