SEATBELT RETRACTOR

A retractor assembly for a seatbelt system having a webbing for restraining a secured occupant, the retractor comprising a spool configured to wind and unwind the webbing about an axis of rotation, the spool includes a side with an opening therein; a collar including an outer surface and an inner surface, the outer surface configured to engage the opening; a locking base configured to operatively engage the inner surface; and an energy absorbing member configured to provide a progressive level of load resistance upon relative rotation between the spool and the locking base.