| 摘要 |
<p>The invention is directed to a unit-based defense barrier for preventing trespass onto/into a maritime vessel, offshore platform, high-risk building, perimeter wall, ad infinitum. The defense barrier includes a series of sharp fang-like protrusions, blades, and/or spikes extending from a rectangular framework and panel. A grapple-resistant triangular safety cage resting on a hinge system allows the unit to be deployed or retracted at will, opening and closing the triangular safety cage and thus covering and exposing the blades and optional electrodes. The complete defense system is comprised of these units being connected and employed in unison along the perimeter of said vessel, platform, building, wall, etc., as a unit-based static defense system.</p> |
