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US 8,226,341 B2Granted
Shock absorbing fastener
AssigneeIllinois Tool Works Inc.
InventorMarc D. Largo
Life of this patent
Estimating the term…
Abstract
A fastener for driving into a substrate has a head having an upper surface and a lower surface, a penetrating tip and a shank extending from the lower surface of the head to the penetrating tip. At least one deformable feature is formed on the head. The deformable feature is configured to absorb energy and to deform. When a driving element is driven onto the head to drive the fastener into the substrate, the deformable feature absorbs energy and is deformed as the head contacts the substrate.
Claims15
A fastener for driving into a substrate, comprising:
- a head having an upper surface and a lower surface;
- a penetrating tip;
- a shank extending from the lower surface of the head to the penetrating tip;
- and
- at least one deformable feature formed integral with and on the head, the deformable feature configured to absorb energy and to deform,
- wherein the shank is heat treated and the deformable feature is not heat treated,
- wherein when a driving element is driven into the head to drive the fastener into the substrate, the deformable feature absorbs energy and is deformed as the head contacts the substrate, and
- wherein the deformable feature has material characteristics different from material characteristics of the shank, such that the deformable feature is softer than the shank.
5 more elements
A fastener for driving into a substrate, comprising:
- a head having an upper surface and a lower surface;
- a penetrating tip;
- a shank extending from the lower surface of the head to the penetrating tip;
- and
- a plurality of deformable features and a plurality of recesses formed on the head, wherein the recesses are formed adjacent the deformable features, the deformable features configured to absorb energy and to deform,
- wherein when a driving element is driven into the head to drive the fastener into the substrate, the deformable features absorb energy and are deformed as the head contacts the substrate, and
- wherein the deformable features have material characteristics different from material characteristics of the shank, such that the deformable features are softer than the shank.
4 more elements
Dependencies are inferred from the claim text.