Plug with inner and outer drum

Abstract

The present invention relates to a plug which can be put into holes, especially into drilled bore holes of walls, which plug effects a surprising solid tightening for example in lay brick-walls also in such cases in which the hole or the plug has at least partly sizes and especially varying diameter-dimensions, which do not allow the use of the so-called spread-plugs known in the prior art. The plug according to this invention is consisting in an inner drum preferably in the shape of a pyramid-stump made out of a hard material and in a outer drum made out of extendable material, whereby the outer drum is connected with the inner drum for example by welding.

We claim:  
     
         1 . Plug with inner- and outer-drum, 
 characterized in,    that the plug is consisting out of an inner drum ( 1 ) made out of a hard material and consisting in an outer-drum ( 2 ) made out of a soft material, whereby the inner drum ( 1 ) is situated in such a way in the outer drum ( 2 ), that the both basis-areas of the both drums situated near to building are tightly connected which each other and that in the inner drum ( 1 ) a canal ( 3 ) is situated.    
     
     
         2 . Plug according    claim 1   , 
 characterized in,    that the inner drum ( 1 ) has a shape of a pyramid-stump.    
     
     
         3 . Plug according    claim 1   - 2   characterized in,    that on the basis area of the inner wall nearer to the building there are arranged pegs ( 4 ), which extend through bore holes situated in the upper end-area of the outer drum ( 2 ).    
     
     
         4 . Plug according    claim 3   , 
 characterized in,    that the pegs ( 4 ) are carrying ball-like heads.    
     
     
         5 . Plug according    claim 1   - 4 , 
 characterized in,    that the outer drum ( 2 ) ripp-elements ( 5 ), which do cooperate referring to a building with the outside lying rectangular basis-area ( 6   a ) with a finish plate ( 6 ).    
     
     
         6 . Plug according    claim 1   - 5 , 
 characterized in,    that the canal ( 3 ) is a canal with a star-like diameter.