Paragraph Number

79

FIG. 6 is a perspective top view of an exemplary screw 104 of FIG. 1A, according to one embodiment of the present disclosure showing an enlarged version of the head feature 107. In particular, FIG. 6 shows a plurality of raised ridges 216. Looking at a single ridge 216, as one example, each ridge 216 may include a long ramp 602 and a short ramp 604. In one embodiment, the angle and size and relationship of the long ramp 602 and the short ramp 604 are designed, or selected, such that the long ramp 602 facilitates sliding of a lock feature 105 past one or more of the raised ridges 216 as a rotatable structure 112 is rotated to the locked orientation.

Added by DJM 5 2021