Master Interlocking Nail System: U.S. Patent # 5,820,324
Master Interlocking Nail System:
This flush installation multi-part interlocking nail fastening
system eliminates loosening of flooring members, rubbing, or relative movement,
thereby eliminating squeaks and noises. A master nail with modified head and shank
portions accepts insertion of two smaller nails of soft composition which, when driven
into a pair of internal longitudinal bores, these small nails exit the master nail to form
opposing arcs, pulling abutting floor members into tight abutting engagement.
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since December 1, 2000