DOUBLE FLUSH CLINCH STUD
First Claim
1. A clinch-type fastener for joining parallel sheets having aligned apertures, comprising:
- a shank having a head at one end and an endcap at the opposite end;
the head being a first displacer having a top surface and being the largest diameter of said fastener;
a first undercut groove on said shank located immediately below said first displacer having a first diameter;
a second displacer on said shank located immediately below said first undercut groove having a second diameter less than said first diameter;
a second undercut groove on said shank located immediately below said second displacer; and
the endcap located immediately below said second undercut groove and being of lesser diameter than said second displacer.
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Accused Products
Abstract
A double flush clinch stud includes adjacent clinch means of different diameters with planar end surfaces. The stud may be employed in forming an assembly wherein two metal sheets are joined in face-to-face contacting relationship. This assembly can provide a flush attachment on the outside surfaces of both sheets when the length of the stud is equal to the combined widths of the sheets. In an alternative embodiment, the top undercut groove can be adapted to be underfilled with the material of the top sheet. In this alternate configuration, the top sheet is effectively constrained between the head of the fastener and the second sheet while permitting the top sheet to pivot with respect to the second sheet.
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Citations
9 Claims
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1. A clinch-type fastener for joining parallel sheets having aligned apertures, comprising:
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a shank having a head at one end and an endcap at the opposite end;
the head being a first displacer having a top surface and being the largest diameter of said fastener;
a first undercut groove on said shank located immediately below said first displacer having a first diameter;
a second displacer on said shank located immediately below said first undercut groove having a second diameter less than said first diameter;
a second undercut groove on said shank located immediately below said second displacer; and
the endcap located immediately below said second undercut groove and being of lesser diameter than said second displacer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification