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US 10,480,559 B2Granted
Fastener with head cutting structure
AssigneeSimpson Strong-Tie Company, Inc.
InventorJeremy Scott Park
Life of this patent
Estimating the term…
Abstract
A fastener includes a shank having a point at a first end and a second, head end. A head structure at the head end includes a top portion and having a cutting structure, the cutting structure comprising four planar walls, each wall engaging the shank at an angle, each wall adjoining an adjacent wall by a rounded edge.
Claims16
A fastener, comprising:
- a shank having a first end and a second end, the shank having at least a first region having a first helical thread having a first effective diameter;
- and
- a head positioned at the second end of the shank, the head having a top portion including a disk having a diameter, a top surface and a bottom surface, and having a cutting structure, the cutting structure comprising four walls, each wall comprising a first arcuate portion and a second arcuate portion, each wall engaging the shank at an angle, each wall engaging the bottom surface of the disk at a non-normal angle and a plurality of rounded edges, one of the plurality of rounded edges positioned between each of two adjacent walls.
A wood screw fastener, comprising:
- a shank having a point at a first end and a second end, and having a base shank diameter, and
- a head at the second end comprising a disk having a top surface and a bottom surface defining a diameter, and a structure having four walls forming a square cross-section smaller than the diameter of the head, each wall comprising a first arcuate portion and a second arcuate portion, each wall intersecting the bottom of the disk and the shank, and a plurality of rounded edges, one of the plurality of rounded edges positioned between two adjacent walls.
Dependencies are inferred from the claim text.