Patent ID: 8333048

Claim:
A method of fixing an accessory part to a wall through at least one hole provided therein, the wall having a front surface and a back surface, the method comprising the steps of: providing a fixture set comprising the accessory part, an optional intermediate accessory piece and fixing means for fixing the accessory part to the front surface of the wall, the fixing means comprising: a bolt having a bolt head and an at least partially threaded bolt shaft; a threaded anchor attachable to the at least partially threaded bolt shaft, the anchor comprising at least two radially expandable parts having a free end; and a splitter comprising an opening arranged to receive the at least partially threaded bolt shaft, the splitter being arranged to provide at least one wedge surface for radially expanding the at least two radially expandable parts of the anchor, the splitter and anchor further comprising mutually interlockable structures for substantially restricting rotation of the anchor relative to the splitter; inserting the at least partially threaded bolt shaft through a hole formed in the accessory part and into the opening in the splitter; mounting the anchor to the bolt shaft with the splitter interposed between the bolt head and the anchor; axially inserting the anchor completely through the hole formed in the wall; at least partially axially inserting the splitter into the hole formed in the wall; placing the accessory part against the front surface of the wall; and tightening the bolt by screwing the bolt shaft into the anchor; wherein the step of tightening the bolt comprises: substantially restricting rotation of the anchor relative to the splitter by means of the mutually interlockable structures as the bolt is tightened within the anchor; restricting rotation of the splitter by providing a solid connection between the accessory part or the optional intermediate accessory piece and the splitter; urging the splitter to penetrate the anchor between the at least two radially expandable parts thereof; expanding the at least two radially expandable parts of the anchor using the at least one wedge surface on the splitter until the expandable parts are at least partially expanded; and locking the anchor against the back surface of the wall due to engagement of the free ends of the expanded anchor parts with the back surface of the wall.