Method for making a building board

专利名称：Method for making a building board发明人：Darko Pervan申请号：US09323999申请日：19990602公开号：US06205639B1公开日：20010327

专利附图：

摘要：The invention relates to a method for making a building board exhibiting aboard body S which is formed with a gripping stud and a metal strip which extends fromthe body S and from which are formed gripping elements which are bent round thegripping stud for mechanical fastening of the strip TO the body S, as well as locking

element for enabling mechanical joining of the board to similar boards. The method ischaracterized by preforming the gripping elements of the strip prior to bending themround the gripping stud and subsequently bending the preformed gripping elementsround the gripping stud the preforming being such that, as a result of the bending, thepreformed gripping elements strike against the gripping stud and thereby undergo adeformation in the opposite direction to the preforming during a final stage of thebending.

申请人：VALINGE ALUMINUM AB

代理机构：Burns, Doane, Swecker & Mathis LLP

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