Patent ID: 7469449

Claim:
A rotatable hinge having a rotatable bracket having a non-circular central hole defined through the rotatable bracket; a pivot bracket having a bottom surface; a central circular hole defined through the pivot bracket and corresponding to the central hole of the rotatable bracket; a first connecting wall formed perpendicularly on one side of the pivot bracket and having an inner surface; an outer surface; and a riveting hole defined through the first connecting wall; a second connecting wall formed perpendicularly on the other side of the pivot bracket, being opposite to the first connecting wall and having an inner surface; an outer surface; and a non-circular mounting hole defined through the second connecting wall; a pintle rotatably mounted through the riveting hole of the first connecting wall and having a narrowed end being adjacent to the inner surface of the first connecting wall; an enlarged end being adjacent to the outer surface of the first connecting wall; and a limit mounted on the narrowed end of the pintle and having a curved edge facing the bottom surface of the pivot bracket, being inverse-V-shaped and having two slanted edges; and an angle between the slanted sides; a first stand being L-shaped, securely mounted on the base, being adjacent to the outer surface of the first connecting wall and having a pivoting hole defined through the first stand and allowing the enlarged end of the pintle to extend in and to be mounted securely in the pivot hole; a mounting assembly connecting with the mounting hole of the second connecting wall and having a fastening element rotatably extending in the mounting hole; and a second stand being L-shaped, corresponding to the first stand to be mounted securely on the base, mounted between the washers and having a through hole defined through the second stand and the fastening element extending in the through hole; a pivot shaft extending in the pivot bracket and the rotatable bracket, mounted rotatably in the circular hole of the pivot bracket, mounted securely in the non-circular central hole and having an enlarged end abutting the bottom surface of the pivot bracket.