Self-drilling, self-anchoring fastener for concrete

Details Self-drilling, self-anchoring fastener for concrete Self-drilling, self-anchoring fastener for concrete

2006-07-04

2006-07-04

Canfield, Robert (Department: 3635)

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Including settable material

Adhesive coating

C411S082300, C411S387100, C411S387200, C411S387700, C411S412000, C411S417000, C411S258000, C411S930000

Reexamination Certificate

active

07070376

ABSTRACT:
A fastener adapted for anchoring into a masonry structure, such as a concrete block, employs an epoxy resin system so that the fastener is both mechanically engaged and bonded to the structure. In one preferred configuration, the bead is composed of a hardener, a resin and a nylon powder and has a cardioid-shaped configuration which subtends substantially 360° around the shank at an intermediate position of a threaded portion of the fastener. Various configurations are disclosed, including a fastener wherein adhesive in microencapsulated form is also applied to a lower intermediate portion. In addition, wings may extend from the shank.

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