A multi-threat security apparatus system for critical infrastructure protection is disclosed having an above-ground concrete base, a vertical post system adapted to be attached to the above-ground concrete base and to receive a plurality of louvers. The plurality of louvers provides the necessary ballistic protection for and air flow through to the critical infrastructure. The louvers may include a composite of aluminum foam, a resin impregnated ballistic material and an aluminum foam. The composite structure may be used on doors, panels or building walls.

A multi-threat security apparatus system for critical infrastructure protection is disclosed having an above-ground concrete base, a vertical post system adapted to be attached to the above-ground concrete base and to receive a plurality of louvers. The plurality of louvers provides the necessary ballistic protection for and air flow through to the critical infrastructure. The louvers may include a composite of aluminum foam, a resin impregnated ballistic material and an aluminum foam. The composite structure may be used on doors, panels or building walls.

An impact shield for earthquake protection is described herein. The impact shield may include a canopy constructed of a puncture-resistant material, the canopy defining a first internal volume accessible via a first opening, the canopy being structured to form a semispherical shape when in an inflated state, the semispherical shape defining a space dimensioned for sheltering at least one human body; a support joined to the canopy and constructed of the puncture-resistant material, the support defining a second internal volume accessible via the first opening and a second opening, the support located within the space, the support structured to form a column when in the inflated state; and a fitting joined to the support for closing the second opening to fix the first internal volume and the second internal volume after inflation of the support and the canopy.

An impact shield for earthquake protection is described herein. The impact shield may include a canopy constructed of a puncture-resistant material, the canopy defining a first internal volume accessible via a first opening, the canopy being structured to form a semispherical shape when in an inflated state, the semispherical shape defining a space dimensioned for sheltering at least one human body; a support joined to the canopy and constructed of the puncture-resistant material, the support defining a second internal volume accessible via the first opening and a second opening, the support located within the space, the support structured to form a column when in the inflated state; and a fitting joined to the support for closing the second opening to fix the first internal volume and the second internal volume after inflation of the support and the canopy.

The present disclosure relates to a field-type negative pressure isolation room system including main facilities necessary for constructing a negative pressure isolation room defined by the legal regulations, wherein the main facilities are manufactured in a plant in a modular way, so these modular facilities are usually stored in a warehouse, etc., and are installed in an outdoor site such as a parking lot, playground, vacant lot, and the like in case of emergency to utilize as a negative pressure isolation room, and these modular facilities are disinfected and dismantled during demolition and stored in the warehouse again, whereby these modular facilities can be used repeatedly regardless of the number of times of use, and can be quickly constructed and dismantled.

A section of a roof covering system, such as a shingle, having a flat base with planar top surface; and a plurality of fins disposed on the planar top surface at an essentially orthogonal angle to the planar top surfaces, forming a plurality of valleys between the fins, thereby forming a plurality of protrusions and recesses to damage, disintegrate and redirect hailstones which are incident upon the portion of the roof covering system.

A section of a roof covering system, such as a shingle, having a flat base with planar top surface; and a plurality of fins disposed on the planar top surface at an essentially orthogonal angle to the planar top surfaces, forming a plurality of valleys between the fins, thereby forming a plurality of protrusions and recesses to damage, disintegrate and redirect hailstones which are incident upon the portion of the roof covering system.

A system for sealing prefabricated facilities or underground facilities may allow for the sealing and pressurizing of parts or all of an underground facility or enclosed facility via a plurality of sealable doors or prefabricated modules. The system may implement mechanical connections between walls or extensions of individual modules. The system may implement complementary mechanical connections or partially complementary mechanical connections between individual modules and may further include module interior or module exterior sealing layers for rigid layers. The system may implement mechanical connections between individual modules wherein each of the mechanical connections may utilize sealing complementary profiles constructed and arranged to provide for an airtight seal between modules. The system may be used to link surface facilities to underground facilities, tunnels or shafts, or to pressurize sections of tunnels or shafts. The system may be used to stabilize pressurized facilities from back-blast due to evacuation of said tunnels or shafts. The system may be used to construct pressurized surface habitats independent of, or linked to underground tunnels or facilities. The system may further be used to construct space platforms or space stations.

A system for sealing prefabricated facilities or underground facilities may allow for the sealing and pressurizing of parts or all of an underground facility or enclosed facility via a plurality of sealable doors or prefabricated modules. The system may implement mechanical connections between walls or extensions of individual modules. The system may implement complementary mechanical connections or partially complementary mechanical connections between individual modules and may further include module interior or module exterior sealing layers for rigid layers. The system may implement mechanical connections between individual modules wherein each of the mechanical connections may utilize sealing complementary profiles constructed and arranged to provide for an airtight seal between modules. The system may be used to link surface facilities to underground facilities, tunnels or shafts, or to pressurize sections of tunnels or shafts. The system may be used to stabilize pressurized facilities from back-blast due to evacuation of said tunnels or shafts. The system may be used to construct pressurized surface habitats independent of, or linked to underground tunnels or facilities. The system may further be used to construct space platforms or space stations.

A tuned liquid damper, including a first outer housing having two ends, the first end being open to the atmosphere and the second end being connected by a conduit to a gas-filled second outer housing. The conduit may be adapted to allow gas flow between the second end and the second outer housing. The tuned liquid damper may also include first and second membranes, each attached to the inside of the first outer housing, and a sealed compartment within the first outer housing defined by the first and second membranes. The sealed compartment may be at least partially filled with a liquid, which prevents gas flow through the first outer housing from the first end to the second end.