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US 11,598,362 B2Granted
Screw fasteners for use in building construction
AssigneeIdeal Fasterners Pty Ltd.
InventorNeville Deutscher
Life of this patent
Estimating the term…
Abstract
A screw fastener comprising: an elongate shank (3) having a screw thread (9) extending along at least a substantial portion of the shank; a drive section (7) located at one end of the shank for allowing the screw fastener to be rotatably driven into one or more material layers; and a self-drilling or piercing point (5) at an opposing end thereof for forming a bore in said one or more material layers; wherein the drive section is shaped to minimise or avoid the need for countersinking of the formed bore.
Claims17
A screw fastener comprising:
- an elongate shank having a screw thread extending along at least a substantial portion of the shank, wherein the shank is solid;
- a drive section located at one end of the shank for allowing the screw fastener to be rotatably driven into one or more material layers;
- and
- a self-drilling or piercing point at an opposing end thereof for forming a bore in said one or more material layers;
- wherein the drive section includes a fastener head having a lateral diameter less than or equal to 40% greater than the maximum diameter of the screw thread to allow the fastener head to follow into the bore and for the fastener head to finish flush with, or below a surface of, the one or more material layers while minimising deformation or damage to the surface.
2 more elements
Dependencies are inferred from the claim text.