Patent ID: 7784153

Claim:
A hinge apparatus, comprising: a hinge, capable of producing and releasing an elastic force by rotating; and a damper arranged coaxially with the hinge, having a fixing housing, defining an accepting hole therethrough along an axis thereof, a rotating nut, accepted in the accepting hole of the fixing housing, defining an axis hole therethrough along an axis thereof, two rotating grooves opened in a sidewall of the axis hole and extending helically along the axis of the rotating nut, a damping body, accepted in the accepting hole of the fixing housing and passing through the axis hole of the rotating nut, two sliding blocks arranged on an outer surface of the damping body and extending helically along the axis of the damping body, each sliding block slidably engaging with the corresponding rotating groove of the rotating nut, two gaskets, accepted in the accepting hole around the damping body, and located over and under the rotating nut respectively, damping oil filled between the gaskets, the fixing housing and the damping body, and a pushing body capable of pushing the damping body to rotate under the elastic force of the hinge, then the rotating nut sliding along the axis of the damping body.