Metal working – Method of mechanical manufacture – Structural member making
Patent
1996-12-23
1999-11-09
Cuda, Irene
Metal working
Method of mechanical manufacture
Structural member making
298973, B23P 1500
Patent
active
059790555
ABSTRACT:
A cold forming process includes mechanically joining two strips of metal. The process entails two roll passes. The first pass lances and forms short locking areas through both strips of metal. The second pass compresses and flairs the metal at these areas to complete a mechanical interlock. This method can provide a row of closely spaced fastenings at high speed. It is applicable in improving the torsion strength of existing tee grid products. It is also applicable in creating more efficient rollformed shapes by providing a means to use more than one metal strip.
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Letter dated Feb. 25,1992 from Sixbey et al. to Clifford B. Price, Esq. 3 pages.
Sauer Gale E.
Stein Henry G.
Cuda Irene
Worthington Armstrong Venture
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