Crime prevention screw, embedding material of screw head,...

Details Crime prevention screw, embedding material of screw head,... Crime prevention screw, embedding material of screw head,...

F - Mech Eng,Light,Heat,Weapons

16

B

F16B 41/00 (2006.01)

Patent

CA 2399877

A crime prevention screw that after the screw is tightened in predetermined places, an embedding material is embedded in a recessed portion composed of a square socket, a hexagon socket, a cross socket or a slot formed on a screw head so that the screw can be prevented from being drawn out with the intention of many pranks and malignant crimes, and an embedding material to be used for this crime prevention screw and the like are provided. Example of such crimes are car stealing through removal of a number plate of an automobile, resale and export of stolen automobiles, stealing and robbery or kidnapping using a stolen car, intrusion of a thief and a public enemy through a window into a house by means of drawing out of screws for fixing a grid to the window or screws for attaching a grid to a sash of the window.

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