Patent ID: 9541116
Date: 2017-01-10
CPC Classifications: F16B

Claim:
1. A fastener comprising: a fastener body having a threaded portion and an opposing tapered portion, said tapered portion including an outwardly angled surface; and a sleeve movably connected to said body, said sleeve having a sleeve body including a plurality of fingers at least partially separated from each other, each of said fingers including at least two, axially spaced gripping members each protruding a maximum radial distance outwardly from said sleeve body, the maximum radial distance progressively increasing from the tapered portion to the threaded portion of the fastener body, wherein after the fastener is inserted in a borehole formed in a substrate and while a fastening member is threaded onto said threaded end and tightened, said sleeve progressively moves along said angled surface causing said fingers to move outwardly and at least one of said gripping members to engage an inner surface of the substrate forming the borehole to secure the fastener in the borehole.