Patent ID: 7635105

Claim:
An ejection device for an aircraft hatch comprising: at least one articulation hinge constructed to support the hatch for pivoting movement on the aircraft about an axle providing a pivot axis, said articulation hinge having a first element connected to the hatch at one end and a second element, releasably attached to the other end of the first element, said second element being attached to the aircraft by the axle for pivotal movement about the axis; a guide assembly further comprising a guide ramp mounted on the axle and having a fixed channel constructed therein, and a guide roller assembly mounted on the first element and engaging the guide ramp for sliding motion in the fixed channel; and further wherein the radial movement of the first element with respect to the second element is restricted by the guide assembly in order to maintain the first element attached to the second element during normal pivotal movement of the hatch, and to permit the first element to be detached from the second element, wherein the guide roller freely rolls out an open end of the guide ramp, if the hatch is opened through an angle in excess of a critical angle.