Abstract: A portable lock down device having at least one end encircling or grasping a door or window handle or other fixed object on the door, a cable or other flexible material extending to a loop or cable attachment device allowing easy attachment and detachment to the primary fixed eyebolt via a spring coupling device, the lock-down system passing through an eyebolt or collapsible ring adjacent to the door's edge, coupling to a primary eyebolt mounted in the wall and out of reach of an intruder so as to provide classroom security.

Abstract: A portable lock-down device, comprising of a loop or clasping device encircling or grasping a door handle or other fixed object on the door, a cable or other flexible material extending to a loop or cable attachment device allowing easy attachment and detachment to the fixed primary eyebolt via a spring coupling device, said portable lockdown device passes through an eyebolt or collapsible ring adjacent to the doors edge, coupling to the primary eyebolt, mounted in the wall, well out of reach of an intruder, provides classroom security.