apertures 68 extending therethrough note that in fig5 a and 5b the diameter of flange 66 is illustrated smaller than the diameter illustrated in the other figures a bottom end of the stem portion 64 is provided with a centrally located aperture 70 each of these apertures accommodates suitable fasteners 60 and 61 referring to fig1 a and 1b also provided is an inner retaining ring 72 as detailed in fig6 inner retaining ring 72 has a central aperture 72 u2032 for accommodating stem portion 64 and includes a set of apertures 74 extending therein each of apertures 74 is also meant to accommodate a suitable fastener 60 a retaining cap 76 is also provided as shown in fig7 and 7a retaining cap 76 has a centrally extending aperture 78 for accommodating a suitable fastener 61 fasteners 60 and 61 can be threaded fasteners or any other suitable type of fastener for example joint 10 is also provided with an outer retaining ring 80 as shown in fig8 a set of apertures 82 extend through retaining ring 80 to accommodate suitable fasteners 60 as shown in fig1 a 1 b 9 and 10 a spring washer 84 is further provided spring washer 84 is preferably comprised of a plurality of very thin pieces of metal which when assembled is very compliant in an axial direction while maintaining a high rigidity in torsion for example spring washer 84 may consist of approximately 60 pieces of 0 001 inch thick stainless steel disks the axial compliance allows the spring washer to be deflected at relatively low electromagnetic forces allowing the upper ratchet plate to mesh with the lower ratchet plate spring washer 84 further depicted in fig9 has a set.