Metal working – Means to assemble or disassemble – Means to drive self-piercing work part
Reexamination Certificate
2005-10-25
2005-10-25
Omgba, Essama (Department: 3726)
Metal working
Means to assemble or disassemble
Means to drive self-piercing work part
C029S243500, C029S818000, C029S432200, C227S002000, C227S005000, C227S006000
Reexamination Certificate
active
06957483
ABSTRACT:
A self-diagnosing pierce nut installation apparatus including an installation head attached to an upper die member of a die press having a reciprocating plunger driving a pierce nut against a panel, piercing a slug from the panel upon closing of the press and a rod telescopically received in the plunger resiliently biased through the nut bore if a slug is pierced from the panel or against the panel if not pierced, and a sensor sensing axial movement of the rod, stopping the press if the rod engages the panel. A die located in the lower die member includes a slug sensor confirming receipt of the panel slug through the die member.
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PCT/WO 2004/094100 A1 International Search Report.
Howard & Howard
Omgba Essama
Whitesell International Corporation
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