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US 4,343,171 AGranted
Apparatus for manufacturing a slat for a shutter
AssigneeSanwa Shutter Corporation
InventorTokiyoshi Kagawa
Life of this patent
Estimating the term…
Abstract
A cold roll forming apparatus for forming a slat for a shutter having forming rolls successively disposed along a path line of the material and a pattern embossing roll disposed along the path line is shown. Metal band sheet fed through the apparatus is formed into a predetermined slat configuration and simultaneously repeated patterns are embossed on the flat surface of the slat. BACKGROUND OF THE INVENTION
Claims4
An apparatus for manufacturing a slat for a shutter, said slat having longitudinal ribs, comprising:
- a plurality of forming rolls comprising stages successively disposed along the path line of a metal sheet to form the metal sheet into a predetermined slat configuration;
- and
- a pair of pattern embossing rolls, having upper and lower driving shafts, disposed along said path line at the last of said stages, at least one of said pattern embossing rolls having embossing patterns thereon to produce corresponding patterns on a surface of said slat, the patterns being formed on the flat surface provided between the longitudinal ribs of said slat, said upper and lower driving shafts of the pattern embossing rolls being rotated only by the slat passing therebetween.
Dependencies are inferred from the claim text.