Bow spring, particularly for seat belt retractor of vehicle seat belt, has multiple straight-lined segments and curved sections provided between segments, where straight-lined segments have same lengths

摘要

The bow spring (18) has multiple straight-lined segments (26) and curved sections (28) provided between the segments. The straight-lined segments have same lengths, and the curved sections have same bending angles. The curved sections are arranged on a circular path. The bow spring is formed in a symmetrical manner. An independent claim is also included for a vehicle seat belt with a belt spool.