interference fit between the aperture 30 in the calibration ring and the outer diameter 32 of the ratchet wheel 20 will be overcome and the ratchet wheel 20 will be allowed to spin within the calibration ring 24 thereby dispensing belt webbing and limiting the load imposed on the occupant as well as the seat frame because there is no plastic deformation of the components of the retractor assembly in one embodiment of the invention as is the case with a torsion bar arrangement the retractor assembly can be reused since none of its part will have been damaged it should however be noted that plastically deformable components may be used in the practice of the present invention an additional benefit with respect to one embodiment of the present invention is that it can placed in a smaller package envelope than a typical torsion bar arrangement which may be important in aviation applications the foregoing description of a preferred embodiment of the invention has been presented for purposes of illustration and description and is not intended to be exhaustive or to limit the invention to the precise form disclosed for instance although the belt retractor assembly of the present invention is designed for aircraft or automotive use the present invention can be applied to any other vehicle or moving.