Metal working – Method of mechanical manufacture – Assembling or joining
Reexamination Certificate
2009-11-30
2011-10-11
Hong, John C (Department: 3726)
Metal working
Method of mechanical manufacture
Assembling or joining
Reexamination Certificate
active
08033005
ABSTRACT:
A method for making a collated fastener assembly includes the steps of arranging a plurality of fasteners each having a head and a tip, in a row parallel to one another, the fasteners being arranged in a plane. The plurality of fasteners are preheated to elevate the temperature of the fasteners and a molten polymer material is applied onto the preheated plurality of fasteners. The fasteners, maintained in the plane, are conveyed with the molten polymer thereon between a pair of forming wheels. The molten polymer material is molded onto the preheated fasteners and between adjacent fasteners to form a plastic molding having a collar encircling a shank of each fastener and a connecting portion between adjacent fasteners. A cooling vapor is sprayed onto the fasteners and the plastic molding as the fasteners and the plastic molding exit from between the molding wheels. A gaseous cooling stream is forced over the fasteners and the plastic molding to cool the strip to form the fastener assembly.
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Bergstrom Donald E.
Christensen Michael J.
Heskel Isaac H.
Mrozik, Jr. Richard W.
Presnell Eldrige J.
Hong John C
Illinois Tool Works Inc.
Levenfeld Pearlstein LLC
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