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US 4,541,947 AGranted
Method for crowd and riot control
AssigneeRockwood Systems Corporation
InventorsCharles J. Clark, Edward M. Bennett
Life of this patent
Estimating the term…
Abstract
An improved riot and crowd control interdiction method involves forming, in a defined location, a foam barrier which effectively inhibits passage through the barrier. Other anti-personnel devices may be placed and obscured by the foam barrier. Various barriers and methods to form a contained interdiction foam barrier are disclosed.
Claims8
A method of riot and crowd control to interdict rioters and the like comprising the steps of:
- providing a barrier structure at a desired location to form an area through which passage by the rioters or crowd is to be denied,
- the step of providing said barrier structure including positioning at least one collapsible chute member to form at least one portion of said barrier structure,
- said chute member being sealed at one end thereof and including an opening at the other end thereof,
- generating a high expansion foam and filling said collapsible chute member by flow of said generated foam through said opening to form a foam filled chute barrier element of a predetermined height thereby providing at least one portion of the barrier structure, and
- directing said high expansion foam into the area on one side of said chute barrier to fill the area defined by said barrier structure with said high expansion foam to form a foamed area thereby to prevent passage through said foamed area and the foam filled chute barrier element.
2 more elements
Dependencies are inferred from the claim text.