Molding to Join Boards, Especially Paper-Gypsum-Boards, at an Angle

Abstract

The moulding has a back part ( 1 ), one straight arm ( 2 ) at right angle relative to the back part, and a second arm ( 3 ) which is slant, situated at acute angle relative to the back part ( 1 ). The slant arm ( 3 ) has notches ( 4 ) in its longitudinal edge, situated locally at certain intervals each from the other, along its lenght.

1 - 12 . (canceled) 
   
   
       13 . A molding for jointing boards at an angle comprising
 a back part;   a first arm being straight, and   a second arm being slant,   
     wherein
 said first arm is disposed at approximately the right angle relative to the back part, and 
 said second arm is disposed at an acute angle relative to the back part. 
 
   
   
       14 . The molding of  claim 13 , wherein said slant arm comprises a plurality of notches on its longitudinal edge, said notches disposed at certain intervals apart from one another, along the length of the edge. 
   
   
       15 . The molding of  claim 14 , wherein said notches have straight sides. 
   
   
       16 . The molding of  claim 14 , wherein said notches have a shape of a groove having a rounded profile, and the vertices of their arc edges are disposed in proximity to the back part. 
   
   
       17 . The molding of  claim 13 , wherein the second arm comprises a longitudinal bead situated in close proximity to the back part along its entire length. 
   
   
       18 . The molding of  claim 14 , wherein the second arm comprises a longitudinal bead situated in close proximity to the back part along its entire length. 
   
   
       19 . The molding of  claim 13 , wherein the back part comprises at least one profiled longitudinal rib. 
   
   
       20 . The molding of  claim 14 , wherein the back part comprises at least one profiled longitudinal rib. 
   
   
       21 . The molding of  claim 13 , wherein the first arm comprises a first stiffening edge having a bend inwards or outwards of its longitudinal edge. 
   
   
       22 . The molding of  claim 14 , wherein the first arm comprises a first stiffening edge having a bend inwards or outwards of its longitudinal edge. 
   
   
       23 . The molding of  claim 13 , wherein the second arm comprises a second stiffening edge having a bend inwards of its longitudinal edge. 
   
   
       24 . The molding of  claim 14 , wherein the second arm comprises a second stiffening edge having a bend inwards of its longitudinal edge. 
   
   
       25 . The molding of  claim 13 , wherein the acute angle is between 30° and 75°. 
   
   
       26 . The molding of  claim 14 , wherein the acute angle is between 30° and 75°. 
   
   
       27 . The molding of  claim 13 , wherein the second arm is wider that the first arm. 
   
   
       28 . The molding of  claim 14 , wherein the second arm is wider that the first arm. 
   
   
       29 . The molding of  claim 13 , wherein said back part and said second arm comprises ports for fixing elements to said back part. 
   
   
       30 . The molding of  claim 13 , wherein said molding is made of a sheet metal having a thickness of less than 1 mm. 
   
   
       31 . The molding of  claim 14 , wherein said molding is made of a sheet metal having a thickness of less than 1 mm.