F - Mech Eng,Light,Heat,Weapons – 16 – B
Patent
F - Mech Eng,Light,Heat,Weapons
16
B
26/28
F16B 5/04 (2006.01) B21J 15/04 (2006.01) B21J 15/38 (2006.01) B23P 19/06 (2006.01) F16B 37/06 (2006.01)
Patent
CA 2022711
60,152-476 METHOD OF INSTALLING SELF-ATTACHING FASTENER AND APPARATUS ABSTRACT OF THE DISCLOSURE An improved die member and method of attaching a self-piercing and riveting fastener to a panel wherein a slug pierced from the panel by the riveting fastener is securely staked in the barrel portion of the fastener during the installation of the fastener. The staking method includes driving a plurality of staking projections into said slug, thereby pinching said slug between the projections and a barrel side wall. This pinching action causes the slug to deform outwardly and lodge between the side walls of said fastener. The staking projections are preferably arranged around the perimeter of the die post and in a most preferred embodiment, the projections have a canted side wall proximal the wall, forcing a portion of said slug toward the barrel side wall, when said slug is pinched between said canted side wall and a bottom wall of said fastener.
Gowling Lafleur Henderson Llp
Multifastener Corporation
LandOfFree
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