Metal working – Means to assemble or disassemble – Means to drive self-piercing work part
Reexamination Certificate
2002-05-13
2009-08-25
Cozart, Jermie E (Department: 3726)
Metal working
Means to assemble or disassemble
Means to drive self-piercing work part
C029S521000, C029S243500, C029S283500, C072S470000, C072S481100, C072S482930
Reexamination Certificate
active
07578055
ABSTRACT:
The tool, for bonding two plates together, has a punch (1) and a die (2) each as two-part structures with a positive fit between the two parts. One part (8, 13), as a tool which acts directly on the plate workpieces (3), is of a harder material than the other part (7, 12) which acts as a tool holder. The punch and die are divided into their two parts across the working direction.
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Japanese Patent Abstract P2000-277668, Oct. 6, 2000.
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