Patent ID: 8727276

Claim:
An anchoring harpoon for use with an aircraft, and configured to cooperate with an anchoring grate ( 2 ) of a platform, comprising: jack means ( 3 ) comprised of cylinder means ( 4 ), the cylinder means ( 4 ) containing a mobile piston ( 5 ) that is moveable with respect to the cylinder means ( 4 ), the mobile piston ( 5 ) comprising a rod ( 6 ) fixedly attached to the mobile piston ( 5 ) to move in accordance with a movement of the mobile piston ( 5 ), a free end of the rod ( 6 ) extending beyond the cylinder means, the free end of the rod ( 6 ) including a harpoon head ( 7 ) configured to hook to the anchoring grate ( 2 ), said harpoon head ( 7 ) comprising retaining fingers ( 8 , 13 , 14 ) for retention to the anchoring grate ( 2 ), said retaining fingers ( 8 , 13 , 14 ) being moveable between a retracted position and an active position by control means ( 9 ), wherein the control means ( 9 ) for controlling the movements of the retaining fingers comprise a control piston ( 18 ) that is slideable inside the rod ( 6 ) and that is associated with a bistable actuator ( 19 ) of the fingers configured to move the fingers ( 8 , 13 , 14 ) between the retracted position and the active position in which the fingers are deployed by way of an application of successive pressure pulses in the jack means.