Patent ID: 6267324
Filing Date: 2001-07-31
Classification: B65H

Abstract:
A metal spool, comprising:a cylindrical barrel;a pair of flanges, each flange disposed at an end of the cylindrical barrel and having a central opening;a pair of flange hubs, each flange hub disposed in the central opening of one of the flanges;a pair of formed metal curls securing the ends of the cylindrical barrel to the flanges and the flange hubs, the metal curls formed of curled metal edges of the cylindrical barrel, the flanges and the flange hubs at the respective ends of the spool; andat least one detent in at least one of the metal curls at a discrete radial location to provide a detented portion and an undetented portion in the metal curl, the detent having a depth relative to the undetented portion sufficient to cause beveled contact between the curled metal edges of the cylindrical barrel, the flange and the flange hub in the metal curl, yet insufficient to puncture the metal surface on the outside of the metal curl.