US Patent 7913360 Hinge

A hinge includes a bracket with a protruding portion, a shaft extending through the bracket, a positioning member mounted on the shaft, and a resilient member. The shaft includes a post and a blocking portion. A slope surface is formed from one end of the protruding portion. The positioning portion is formed on the positioning member facing to the protruding portion of the bracket. An inclined stopping surface is formed from one end of the positioning portion. The resilient member fits about the shaft between the blocking portion and the positioning member. When the shaft rotates with respect to the bracket beyond the limits of a desired angle, the protruding portion drives the inclined stopping surface of the positioning member to move the positioning member away from the bracket to compress the resilient members for obviating the hinge to be damaged.