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US 2022/0161398 A1Published application
Fastener system with stabilizer ribs and square drive
AssigneePhillips Screw Company
InventorGary Dilling
Life of this patent
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Abstract
Fasteners, drivers, punches, fastener systems, and methods of making fasteners, drivers, punches, and fastener systems are disclosed herein. The fasteners, drivers, punches, and fastener systems include, in one example, stabilizing ribs and corresponding recesses.
Claims32
A fastener system comprising:
- a fastener having a recess, the recess comprising:
- a central recess core having a bottom region;
- a plurality of recess surfaces extending from a top of the recess and connected to the bottom region and forming a bottom region transition edge at the intersection of the bottom region and the recess surfaces;
- a groove in at least one of the recess surfaces extending in a radially outward direction from the at least one recess surface, the groove extending from a first distance from the bottom region transition edge to a second distance from the bottom region transition edge, the first distance being nonzero;
- wherein the at least one recess surface includes a recess interference surface defining a design recess interference region located between the groove and the recess bottom region;
- a driver for engaging the recess of the fastener, the driver comprising:
- a shank portion and a recess-engaging portion formed at an end of the shank portion, the recess-engaging portion comprising a driver central driver core having an end region and a plurality of driver surfaces connected to the end region and forming an end region transition edge at the intersection with the driver end region;
- a stabilizing rib on at least one of the driver surfaces extending in a radially outward direction from the driver central core, the stabilizing rib extending from a first distance from end region outer transition edge to a second distance from the end region outer transition edge, the first distance being nonzero;
- and
- wherein the at least one driver surface includes a driver interference surface defining a design driver interference region located between the stabilizing rib and the driver end region;
- and
- wherein, in normal coaxial insertion between the driver and the fastener, the recess interference surfaces and the driver interference surfaces establish an interference fit located between the groove and the recess bottom region and between the stabilizing rib and the driver end region transition edge preventing the driver end region from bottoming out in the recess bottom region.
9 more elements
A fastener comprising:
- a central recess core having a recess bottom region;
- a plurality of recess surfaces extending from a top of the recess and connected to the bottom region and forming a bottom region transition edge at the intersection of the bottom region and the recess surfaces;
- a groove in at least one of the recess surfaces extending in a radially outward direction from the at least one recess surface, the groove extending from a first distance from the bottom region transition edge to a second distance from the bottom region transition edge, the first distance being nonzero;
- wherein the at least one recess surface includes a recess interference surface defining a design recess interference region located between the groove and the recess bottom region.
1 more element
A method of forming a fastener having a recess formed at an end thereof, the method comprising:
- using a punch to form the recess, the punch including:
- a central core having a bottom forming portion;
- a plurality of sidewall surface forming portions connected to the bottom region forming portion and forming a bottom region transition edge forming portion at the intersection of the bottom region forming portion and the sidewall surface forming portions;
- a groove forming portion in the sidewall surface forming portion extending in a radially outward direction, the groove forming extending from a first distance from the bottom region transition edge forming portion to a second distance from the bottom region transition edge forming portion, the first distance being nonzero;
- wherein and the sidewall forming portions conform to a shape of a polygon.
2 more elements
Dependencies are inferred from the claim text.