Illinois Tool Works Inc.

Other

Kent B Godsted

Geronimo E Lat

Louis M Spoto

Richard J Ernst

A polymer-coated metal fastener is provided which has both improved ease of drive into a substrate, and improved resistance to withdrawal from the substrate. The coated fastener is prepared by heating a metal fastener, or a portion of it, to about 400-2000&deg; F. and cooling in an aqueous medium containing an acrylic or modified acrylic polymer. The rapid cooling causes formation of a thin yet durable polymer coating on the fastener.

Method of chemically coating fasteners having improved penetration and withdrawal resistance

A selectively hardened nail includes a nail head, an elongated shank, and a tip. A portion of the nail shank is made harder than the remainder by selectively heat treating that portion, and cooling it. The nail has controlled bending properties. The selectively hardened portion does not significantly bend when the nail is fired at a surface using a power driving tool, or during use of the nailed object.

Selected heat treatment and hardening method for nails

A corrugated fastener having an asymmetrically corrugated body member with more corrugations protruding from one face of the body member than from an opposite face thereof, and a leading edge on one end of the body member, the leading edge formed by at least one beveled surface and skewed toward the face of the body member having more corrugations protruding therefrom.

Asymmetric bevel corrugated fastener

Nails having selected heat treatment and hardening

The invention disclosed shows a device, method and system for installing threaded masonry anchors. A plate is used to control the rate of axial penetration of the anchor into a masonry structure. An opening in the plate allows engagement of the anchor with the plate. Rotation of the plate is prevented by various means. As the anchor advances and forms threads in the structure, the plate may be used to resist axial forces on the anchor in either axial directions thereby precluding stripping of threads formed in the masonry structure.

Penetration controlling device and system

A threaded fastener designed for anchoring imbedment into masonry structures and more particularly into masonry structures which include relatively hard aggregate. A critical distinct relationship between parameters of a fastening system such as the lead angle of the thread, the included angle of the thread, the depth of imbedment of the crest of the thread in a bore of predetermined diameter exists in order to create an adequate effective fastening system for hard aggregate masonry or concrete.

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Grayslake, IL, United States of America

Kent B Godsted