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US 9,574,602 B2Granted
Clinch fastener
AssigneeRifast Systems LLC
InventorJohn E. Burton
Life of this patent
Estimating the term…
Abstract
A self-clinching fastener for insertion into ductile sheets of varying thicknesses has increased push-out and torque-out resistance. The self-clinching fastener includes a plurality of radial projections and spline teeth that embed into the ductile sheets, causing the material to cold flow into a recess, thereby permanently clinching the self-clinching fastener to the ductile sheet.
Claims10
A self-clinching fastener for connection to a hole in ductile material and including a central axis, the self-clinching fastener comprising:
- a head including an inner surface and an outer surface;
- an anti-rotation protrusion adjacent to and projecting from the inner surface of the head and including a plurality of teeth extending radially from the central axis;
- a clinched material recess adjacent to the anti-rotation protrusion;
- and
- each of the plurality of teeth having shoulder portions that cause the ductile material to flow into the clinched material recess when the self-clinching fastener is pressed into the ductile material.
2 more elements
Dependencies are inferred from the claim text.