Patent ID: 8733138

Claim:
An anti-theft device that is designed to hook onto an item that can be pilfered, comprising: a control part that can move in rotation relative to a hooking part, whereby said hooking part comprises hooking means that can move in translation with: an unlocked position designed for the insertion of the item into the device and for its removal and in which the rotation of the control part relative to the hooking part drives the translational movement of the hooking means, and a locked position that is designed to keep the device in place on the item and in which the rotation of the control part relative to the hooking part does not drive the translational movement of the hooking means, wherein the locked position is achieved for a predetermined value of a torque force that is applied on the control part, the predetermined value being predetermined during design of the device, wherein the control part has an external contact surface at which a user causes the control part to be rotated without the use of a tool to cause a clamping force to be exerted on the item, and wherein the device further comprises an internal system that connects the control part to the hooking means, said internal system comprising a connection part that is inherently designed for automatic interruption when a torque force that is applied by the hand of the user on the external contact surface of the control part exceeds said predetermined value.