Patent ID: 7140826
Filing Date: 2006-11-28
Classification: F16B

Abstract:
1. A resilient anchor insertable into a preformed masonry hole having walls, the combination anchor and hole comprising: an anchor shank having a smooth surface and including a circular upper end with adjoining straight upper shank section defining a nominal shank diameter, an opposite circular lower end with adjoining straight lower shank section, and a single asymmetric three-dimensional bulge disposed between the upper and lower straight sections of the shank and having a preinsertion length, the upper and lower ends defining a longitudinal axis passing through the ends, the upper and lower straight sections concentrically aligned with the longitudinal axis prior to inserting the anchor into the hole; wherein after the anchor is inserted into the hole, the bulge and at least part of the upper or lower straight shank section adjacent the bulge move into engagement with the walls of the hole creating uninterrupted contact between the surface of the anchor and the hole walls along a continuum of longitudinal positions that is greater in length than the preinsertion length of the bulge alone.