Core metal insert with stress relief and method of making same

Details Core metal insert with stress relief and method of making same Core metal insert with stress relief and method of making same

2005-11-21

2009-10-20

Watkins, III, William P (Department: 1794)

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

To produce composite, plural part or multilayered article

C264S274000, C264S279000, C264S279100, C264S154000, C264S138000, C428S136000, C428S122000, C428S043000, C029S006100, C072S324000

Reexamination Certificate

active

07604766

ABSTRACT:
A core metal insert is provided having a series, or multiple series, of laterally extending score marks in a non-reduced thickness portion, or portions, of the insert. Such score marks are provided in at least one face surface of the insert. The score marks provide stress relief so that when the corresponding precursor sheet metal blank is lengthened to produce the insert, the resulting insert will have a lesser tendency to contract from its lengthened state. A method of providing such a core metal insert also is provided.

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