EXPANDING RIVET AND METHOD FOR PRODUCING THE SAME

WIPO Patent Application WO2001050025

A3

The invention relates to an expanding rivet that comprises an expansion anchor (2) and a drive pin (3) that are captivated with one another in the pre-assembled state of the expanding rivet (1). The expansion anchor (2) is provided with an insertion hole (5) in its center which hole is adapted to the shape of the drive pin (3). The expansion anchor further comprises two support wings (12) that project laterally in opposite directions and two opposite expansion limbs (4') that project downwardly at a right angle. The pre-assembled drive pin (3) projects somewhat beyond the expansion anchor (2) while engaging with the two expansion limbs (4'). Once the drive pin (3) is driven into the expansion anchor, the expansion limbs (4') are expanded by the drive pin (3), thereby establishing a rivet connection (fig. 10). The novel expanding rivet (1) can be produced with simple means and at low costs from a metal strip. It can preferably be used where the parts to be joined by a rivet are only accessible from one side. The inventive expanding rivet is adaptable to rivet holes having different shapes and sizes and to components (23, 23' or 24, 24') having different thickness so that it has to be produced only in few sizes.

TRESORIER JEAN-FRANCOIS (FR)

PCT/EP2000/012184

May 02, 2002

December 05, 2000

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RAYMOND A & CIE (FR)
TRESORIER JEAN FRANCOIS (FR)

F16B1/00; F16B19/10; (IPC1-7): F16B19/10

DE2514950A1	1975-10-09
US3276309A	1966-10-04
DE1129778B	1962-05-17
GB1058209A	1967-02-08
DE1475075A1	1969-05-08

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