Title: Seat belt retractor with pivoted locking mechanism

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Abstract: The inertia locking mechanism for a rotatably mounted belt reel includes a support member mounted for rotation about the axis of reel rotation. A lock bar is pivotally mounted on the support member and has locking teeth on one side adapted to engage the reel and locking teeth on the other side adapted to engage a set of arcuately displayed teeth on the retractor housing so that the lock bar blocks rotation of the reel relative the frame. A pendulum is mounted on the support member and is actuated by inertia stimulus to move the lock bar to the locking position. Gravity causes the support member, lock bar, and pendulum to rotate about the axis of reel rotation so that the pendulum attains its normal vertical depending position irrespective of the mounting orientation of the retractor housing about the axis of reel rotation. Balance weights are added to the support member to control the magnitude and location of the unbalanced mass so that an inertia stimulus does not impart rotation to the support member prior to the actuation of the pendulum by the inertia stimulus to engage the lock bar.


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