Patent ID: 7246416

Claim:
A slidingly engageable fastening device comprising: a first portion that includes: a first base having a first basal surface; and a plurality of first undercut segments spaced from said first basal surface; and a second portion, for slidingly engaging with said first portion upon application of a relative shearing force with respect to said first and second portions, said second portion including: a second base having a plurality of fenestrations and a second basal surface, said second base continuous between said fenestrations to stem segments, each said stem segment extending away from said second basal surface to the top surface of an island spaced from said second basal surface, each said island having a segmented edge comprising a plurality of second undercut segments, each said second undercut segment extending away from a sidewall of an adjacent said stem segment, so as to overhang at least part of a corresponding said fenestration; wherein said undercut segments associated with each said island are separated by intervening said stem segments and include undersides spaced from said second basal surface, and wherein edges of said undercut segments are oblique to the edges of said undercut segments associated with adjacent said islands, and further wherein said sidewalls and undersides are configured to provide a generally tapered aperture for progressively receiving adjacent pairs of said first undercut segments between said sidewalls, said undersides, and the plane of said second basal surface, so as to connect and interlock said first portion with said second portion upon application of said relative shearing force.