Patent ID: 7780387

Claim:
A fixture set comprising an accessory part ( 2 ) with at least one hole and at least one means for fixing the accessory part ( 2 ) to a front surface of a wall through a hole provided through said wall, which fixing means comprises: a bolt ( 3 ) having a bolt head and an at least partially threaded shaft, wherein the bolt shaft is inserted through the hole in the accessory part; an anchor ( 5 ) which is threaded so as to be attached to the bolt shaft thread, which is insertable through said hole in the wall and which comprises at least two parts which are radially expandable to lock the anchor against a back surface of said wall; a splitter ( 4 ) which comprises an opening arranged to receive the bolt shaft so that the splitter can be interposed between the bolt head and the anchor ( 5 ), and which is at least partially axially insertable through the hole in the wall and penetrating between the radially expandable parts of the anchor; the splitter ( 4 ), the anchor ( 5 ), or both the splitter ( 4 ) and the anchor ( 5 ) comprising at least one wedge surface ( 8 ) for expanding said radially expandable parts of said anchor ( 5 ) radially when said splitter ( 4 ) is urged to penetrate in between the radially expandable parts of the anchor ( 5 ), and the splitter ( 4 ) and the anchor ( 5 ) further comprising mutually interlockable structures ( 9 , 11 ) for substantially restricting rotation of said anchor ( 5 ) relative to said splitter ( 4 ); wherein either the accessory part ( 2 ) or an intermediate accessory piece ( 17 ) arranged to be fixed between the accessory part ( 2 ) and the front surface of said wall, comprises means for substantially restricting rotation of said splitter ( 4 ) relative to said accessory part ( 2 ) or intermediate accessory piece ( 17 ); wherein said means for substantially restricting rotation of said splitter ( 4 ) relative to said accessory part ( 2 ) or intermediate accessory piece ( 17 ) comprise a form-locking device ( 13 ) on the accessory part ( 2 ) or on the intermediate accessory piece ( 17 ) for holding the splitter ( 4 ) against rotation; wherein said splitter ( 4 ) has a non-circular head portion ( 7 ), and said form-locking device ( 13 ) is arranged for holding said non-circular head portion ( 7 ) against rotation; and wherein said form-locking device is a non-circular recess ( 13 ) in said accessory part ( 2 ) or in said intermediate accessory piece ( 17 ) which is arranged to receive the non-circular portion ( 7 ) of the splitter ( 4 ).