US Patent 9027893 Hanging device

A hanging device includes a wall-connecting frame, an object-connecting frame, and a plurality of connectors. The wall-connecting frame includes a connecting bracket that has a plurality of connecting holes formed in front and rear end faces thereof. The object-connecting frame is connected to the connecting bracket and is adapted for connection with an object. Each connector extends through one of the connecting holes in the rear end face and a corresponding connecting hole in the front end face, and is connected to the object-connecting frame. The connectors are operable to move the object-connecting frame forwardly and rearwardly relative to the wall-connecting frame.