Patent ID: 7520024

Claim:
A hinge assembly comprising a body having two sides; a top; a bottom; and two protrusions being coaxially formed at the two sides respectively; two mounting leaves being mounted pivotally on the two sides of the body and each mounting leaf having a bottom; a side surface; a slide slot being formed through the side surface of the mounting leaf and receiving one of the protrusions of the body and having a folding end; and an active slot being formed through the side surface of the mounting leaf and having a latching end and being crisscross with the slide slot; an active leaf being capable of retaining in a position and having two mounting portions being mounted pivotally with the mounting leaves respectively and each mounting portion having a surface; and a retainer protruding from the surface of the mounting portion and extending through the active slot in a corresponding one of the mounting leaves and being in the latching end of the active slot; and two resilient elements being mounted respectively on the mounting leaves and each resilient element having a first end being attached to one of the mounting leaves; and a second end being connected to one of the mounting portions of the active leaf.