US Patent 10130001 Slide rail assembly and bracket device thereof

The present invention discloses a bracket device for a rail element, which is configured to be mounted to a rack. The bracket device includes a main supporting element, a first supporting element, a second supporting element and a bracket. The main supporting element is connected to the rail element. The first supporting element is movable relative to the main supporting element. The second supporting element is movable relative to the first supporting element. The bracket is mounted to the second supporting element, and configured to be mounted to the rack.