Patent ID: 11873101
Assignee: ESCAPE INTERNATIONAL SAS
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A device for securing at least one sling for transporting a load under a helicopter, said securing device comprising:
at least one first strap and at least one second strap, each strap extending longitudinally and comprising an end for joining to the helicopter and a connecting end,
a connecting mechanism configured, in a closed state, to connect the connecting ends of the straps to form an overall securing strap capable of supporting a sling and, in an open state, to release the connecting ends of the straps to drop the sling from below the helicopter, the connecting mechanism being suited to withstand in the closed state a tractive force of 1500 kg, and
an actuator configured to open the connecting mechanism following an input of mechanical force, the connecting mechanism comprising a plurality of rings mounted in cascade configured to reduce the force of resistance to the opening of the connecting mechanism induced by the support of the sling so that the input mechanical force is less than 20 kg for a tractive force of 1500 kg induced by the support of the sling, the connecting mechanism comprises at least a first ring, a second ring and a third ring, the first ring having a diameter greater than that of the second ring and the second ring having a diameter greater than that of the third ring, the first ring being hinged at the level of the connecting end of the first strap whereas the second and third rings are hinged at the level of the connecting end of the second strap.