Simplified method and apparatus for making cored wire and other tubular products
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United States of America Patent
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May 31, 2011
Grant Date -
Jun 26, 2008
app pub date -
Dec 20, 2006
filing date -
Dec 20, 2006
priority date (Note) -
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Abstract
Improved cored-wire fabrication replaces multiple roller pairs with one or more dies. In the preferred embodiment, flat stock is pulled through a single cylindrical die including an upper tab to ensure and orient the formation of a gap to receive internal powders. Once the powders are introduced, a cylindrical die is used for closure though again, one or more rollers may be used between the powder feed and the die used for closing. In the preferred embodiment, however, a single gap-forming die is used before the powder feed, and a single closing die is used after the powder feed, replacing numerous rollers and other moving parts, thereby dramatically simplifying the apparatus and method of manufacture.
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