Semblex Corporation

Gene M Simpson

Brandt J Ruszkiewicz

Eric C Breidenbaugh

A fastener has a generally cylindrical shank and a driver at a first end of the shank. The shank has a thread having a first side and a second side opposed to the first side. The first and second sides form a compound angle between the shank and an apex where the first and second sides meet. The compound angle is formed by a body portion extending along the first and second sides from the shank to an intersection, and a crest portion extending along the first and second sides from the intersection to the apex. The first and second sides in the body portion form a body angle with respect to each other, and the first and second sides in the crest portion form a crest angle with respect to each other. The crest angle is greater than the body angle.

Fasteners for high strength steel

A fastening device for reducing the time required for insertion that includes an elongated shank portion extending longitudinally between a first and a second shank end; and a head portion arranged at the second shank end, wherein the head portion includes a drive arrangement configured and arranged for receiving a rotary driving force to drive the fastening device into at least one workpiece. The elongated shank portion includes a plurality of intertwined helical ridges (plural thread starts). Preferably, the tip portion is configured and arranged to create a hole and threads by softening the material of a workpiece. Additionally, a method for creating an assembly by attaching a first workpiece to a second workpiece via the use of such a fastening device.

Growing community of inventors

Algonquin, IL, United States of America

Gene M Simpson