Patent ID: 8387340

Claim:
An anchor installation in a lightweight construction panel ( 100 ) comprising: a support core ( 121 ) with respective first and second cover plates ( 101 and 111 ) disposed at opposite sides of the support core ( 121 ); said anchor including an expansion body ( 10 ) provided with a central receiving bore ( 35 ) with a threaded bore section ( 34 ) for accommodating an anchor installation tool ( 80 ); a wedge body ( 60 ) movably supported in the expansion body ( 10 ); said anchor being disposed in a panel bore ( 130 ) of the construction panel ( 100 ), wherein said panel bore ( 130 ) extends through the first cover plate ( 101 ) and the support core ( 121 ); said expansion body ( 10 ) including engagement elements ( 42 ) which are spread apart in the support core ( 121 ) behind the first cover plate ( 101 ); said anchor including an upper and a lower cavity ( 49 , 59 ), wherein the volume of each of the upper and lower cavity is temporarily reduced during installation of the anchor into the panel bore ( 130 ), and the upper and lower cavity each include a plurality of cement-containing balloons ( 3 , 4 ), and the upper and lower cavity each has at least one opening of a maximum width which is smaller than the smallest cement-containing balloon ( 3 , 4 ) contained in each of the upper and lower cavity ( 49 , 59 ) respectively so that, during temporary reduction of the upper and lower cavity volume during insertion of the anchor, the cement-containing balloons ( 3 , 4 ) are ruptured and cement content is discharged from each of the upper and lower cavity via the at least one opening and the cement content is solidified.