Patent ID: 7607202

Claim:
A hinge comprising: a stationary leaf having a body having a side; and an elongated keyway being formed longitudinally in the side of the body; and a sleeve being formed on the side of the body, communicating with the elongated keyway; multiple resilient flat washers being mounted in the sleeve and being mounted securely in the body, and each resilient flat washer having a ring being mounted in the sleeve and having a first surface; a second surface being opposite to the first surface; an inner annular edge; an outer annular edge; a gap being formed through the inner and outer annular edges; a receiving recess being formed annularly in the first surface; and a mounting rib formed annularly on the second surface, wherein the receiving recess of the ring of each resilient flat washer engages the mounting rib of the ring of a corresponding resilient flat washer; and a key wing being formed on and protruding transversely from the outer annular edge of the ring, being mounted securely in the keyway of the stationary leaf and having a first surface; a second surface being opposite to the first surface of the key wing; two sides; a receiving recess being formed in the first surface of the key wing; and a mounting rib being formed on the second surface of the key wing, wherein the receiving recess of the key wing of each resilient flat washer engages the mounting rib of the key wing of a corresponding resilient flat washer; and a pintle being mounted rotatably in the rings of the resilient flat washers.