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Wood insert

  • US 4,822,223 A
  • Filed: 09/23/1987
  • Issued: 04/18/1989
  • Est. Priority Date: 09/23/1987
  • Status: Expired due to Fees
First Claim
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1. An insert for securing coupling means in a recipient material comprising:

  • a body having a first end, a second end, and an exterior annular surface therebetween;

    a first portion of said body near said first end being formed into a recess for accommodating a first part of an adhesive placed in a hole in said recipient material with said insert and thereby allowing said first part to form a protrusion adhered to said recipient material adjacent to said recess at the inner surface of said hole and extending into said recess which protrusion, after said adhesive hardens, acts as a barrier resisting removal of said insert from said hole;

    a second portion of said surface extending from said second end to a point on said surface coextensive with the edge of said recess closest to said second end having first penetrating means for engaging said recipient material at said inner surface, said engaging means axially securing said insert in said hole;

    a third portion of said surface having a plurality of indentations, said indentations being sized and shaped whereby said third portion takes a wave-like shape, said shape of said periphery for interfacing with a second portion of said adhesive in which said third portion is embedded when said insert is installed in said hole having said adhesive placed therein, said indentations being sized such that there are six wave crests and six wave troughs on said periphery for providing an effective interface with said second portion of said adhesive, said wave crests and said wave troughs having a relative wave height of either substantially core nor substantially less than one eighth of said body'"'"'s maximum diameter;

    said cylindrical body further having an axially-oriented columnar cavity at said first end, said cavity having second engaging means for engaging with said coupling means.

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