Protective cover
AssigneeWheelabrator Corporation of Canada Limited
InventorJoseph Czempoyesh
Life of this patent
Estimating the term…
Abstract
A device for containing the force of an explosion comprises a blanket or curtain of flexible material that can be draped around a danger zone. The blanket or curtain comprises a plurality of layers of fabric, each layer having a tight, balanced weave independently woven from a tough, non-combustible yarn of at least 1,000 denier. The fabric is substantially interrupted by stitching in a central zone intended to take the main force of the explosion. The fabrics are bound together at their edges with a border of tough material extending around the periphery of the blanket or curtain.
Claims23
A device for containing the force of an explosion, comprising:
- a blanket or curtain of flexible material that can be draped around a danger zone;
- said blanket or curtain having a peripheral border area and a central area circumscribed by said border area;
- said blanket or curtain comprising a plurality of separate layers of fabric, each layer having a tight, balanced weave independently woven from a tough, non-combustible poly (p-phenylene terephthalamide) yarn of at least 1,000 denier;
- a border strip of tough reinforcing material extending completely around the periphery of the blanket or curtain in said border area and lying adjacent the edge of the blanket or curtain so as to have a limb thereof extending in said border area on each side of the blanket or curtain;
- means for binding said fabric layers together with said strip of tough material within said border area;
- said fabric layers being substantially uninterrupted by stitching and being free and unconnected to each other in said central area;
- attachment means disposed around said border area and extending through said strip of tough material to permit said blanket or curtain to be suspended or attached to equipment or external elements;
- the inside surface of said fabric layers being coated with a composition consisting of a thermoplastic and a water resistant agent;
- and
- said fabric layers being sealed together around the edges by means of said thermoplastic to prevent the ingress of moisture, such that moisture is excluded from the space between said fabric layers.
Dependencies are inferred from the claim text.