Patent ID: 6811118
Filing Date: 2004-11-02
Classification: B64C,Y10T

Abstract:
A latch device, for latching an airplane landing gear or an airplane landing gear hatch, the device comprising a box containing a set of hinged elements mounted to pivot about respective parallel axes, said assembly including at least one hook and a locking lever connected to said hook by associated elastically deformable return means, said hook being unlocked by acting on said locking lever via first actuator means in a normal mode of operation, and via a second actuator means in an emergency mode of operation when said first actuator means fails to unlock the hook, wherein the second actuator means associated with the emergency mode of operation is an electromechanical actuator under independent electrical control, said second actuator comprising two electric motors associated in irreversible manner with a common differential gear train, having an outlet shaft controlling the pivoting of an emergency unlocking lever co-operating with the locking lever used in normal operation.