06205639 is referenced by 127 patents and cites 63 patents.

The invention relates to a method for making a building board

2,

exhibiting a board body S which is formed with a gripping stud

24,

and a metal strip

10

which extends from the body S and from which are formed gripping elements

26, 28

which are bent round the gripping stud

24

for mechanical fastening of the strip

10

TO the body S, as well as locking element

12

for enabling mechanical joining of the board

2

to similar boards. The method is characterized by preforming the gripping elements

26, 28

of the strip

10

prior to bending them round the gripping stud

24,

and subsequently bending the preformed gripping elements

26, 28

round the gripping stud

24,

the preforming being such that, as a result of the bending, the preformed gripping elements

26, 28

strike against the gripping stud

24

and thereby undergo a deformation in the opposite direction to the preforming during a final stage of the bending.

Title
Method for making a building board
Application Number
9/323999
Publication Number
6205639 (B1)
Application Date
June 2, 1999
Publication Date
March 27, 2001
Inventor
Darko Pervan
Viken
US
Agent
Burns Doane Swecker & Mathis
US
Assignee
Valinge Aluminum
US
IPC
B21D 39/00
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