Importance

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Abstract

A wedge-type fastener which is economical to manufacture and can be installed using known installation tools, such as those used in Europe. The fastener comprises a main body portion having an exterior adapted to be grasped by a tool to hold the same and an insert mounted in its interior keyed to the interior of the main body portion for rotation therewith. A threaded stud having a head keyed to the interior of the insert is also mounted within the body portion having a threaded portion extending out of one end of the body portion. The body portion is closed off at one end by a snap-in cap which also aligns the threaded stud in the body portion and abuts against the insert. The threaded portion of the stud extends through the cap and terminates in a snap-on cap that keeps a threaded nut threaded on the threaded portion of the stud between the first cap and the second cap from running off the stud. The stud, at its other end, includes a pair of wire elements fixedly secured therein. The wire elements extend out of an opening in the insert and out of the main body portion and a spreader, trapped within the body portions, is retained between the wires and held within the body portion. When the body portion is held by a tool and the nut is rotated and abuts against the first cap, the body portion, insert, and spreader do not rotate while the stud extends out of the body portion pulling the wire elements within the body portion with the spacer forcing the elements away from each other to thereby clamp surfaces on the blind or non-accessible side of the aperture in which the fastener is inserted.

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First Claim