A bullet resistant and impact resistant overhead rolling door is created from a plurality of interconnected panel members formed from inner and outer shell members having interengagable barbs to secure the two shell members with one another when assembled. The two shell members create an internal cavity within the panel for housing ballistic material, such as a sheet of pressed ballistic material, insulating foam and/or a sheet of metal to increase ballistic resistance of the panel. A sheet of ballistic material can be secured between the interengaged barbs of adjacent panel members to serve as a hinge and permit pivotal movement therebetween. The shell members can be formed from metal with the ballistic material providing bullet resistant protection, but are preferably formed of 6063 aluminum to enhance the bullet resistance of the panel members.

A method of forming maintenance-free rolling door vacuum slats includes an elongate tubular member forming a cavity with a substantially uniform cross-sectional configuration along its length and forming first and second opposing ends conforming to the cross-sectional configuration. A first cap seals the first end. A second cap seals the second end, a vacuum being formed within the cavity. The first and second caps are joined to the elongate member to form a hermetic seals to render the slat airtight forming a permanent vacuum insulation barrier that requires no maintenance to restore the vacuum within the cavity.

Example insulated pliable door panels or curtains include various internal vapor barriers. The vapor barriers have a relatively high water vapor transmission rate that inhibits water vapor from permeating through the door panel. With such vapor barriers, outer sheets of the door panel can be made of polyurethane or other tough materials that might have an inadequate water vapor transmission rate. In some examples, the vapor barrier encircles or encloses a thermally insulating pad. In some examples, the door panel includes a sleeve or pocket that holds the vapor barrier in place. Some examples include means for draining water that might condense within the door panel.

The present invention discloses an integrated multi-function window in the technical field of building material, which overcomes the disadvantages of the existing windows, including complicated structures and time, labor and cost consuming double constructions. The integrated multi-function window includes a first window frame having a first window. A first window cover is mounted at the upper part of the first window frame and first telescopic curtain cloth is located within the first window cover. One side of the first window frame is fixedly connected to the second window frame having a second window. The position of the second window is corresponding to that of the first window. The integrated multi-function window has a simple configuration and multiple functions and is of a low cost and improved reliability.

A system for heating a door guide area includes: a first and second conduit for channeling a flow of heated air; a heater fluidly connected to the first conduit and configured to provide air to the first and second conduits; first and second openings providing fluid communication between the first and second conduits to allow the air to circulate through the first and second conduits; a heat transfer wall part of the second conduit, to transfer heat from the flow of heated air in the second direction to a space outside of the second conduit that is defined, in part, by the heat transfer wall; and two side supports connected to the heat transfer wall, the side supports located opposing each other and dimensioned and located along with the heat transfer wall to form three sides to encompass a portion of a roll-up door.

A method for heating a door guide area includes: channeling a flow of heated air in a longitudinal first direction in a first conduit; channeling the flow of heated air in a longitudinal second direction different than the first direction in a second conduit; providing heated air to the second and first conduits by routing the heated air directly from a heater laterally across the first conduit to the second conduit; transferring heat from the flow of heated air in the second conduit to a heated space outside of the first and second conduits; and configuring a side portion of a roll-up door to be in the heated space when the roll-up door is in a closed position.

A containment device including a curtain that can be deployed from a first wound or folded position into a second unwound position, and a case for storing the curtain in the first position. The case is formed by a plurality of adjacent modules, the plurality of modules including active modules that are equipped with means for retaining and releasing the curtain and passive modules that are not equipped with means for retaining and releasing the curtain.

A door, in particular a roll-up door, having a curtain that can be moved between a closed position in which it is arranged, at least in sections, approximately in a plane and an open position in which it is wound, preferably at least in sections, on a winding shaft, said curtain having at least one thermally insulating region such as an insulating body, preferably made of PE form. The insulating region is formed by a pocket bordered at least partially by strip-shaped, deformable reinforcing layers, in particular made of plastics, particularly preferably made of PVC.

The invention is a track system for a retractable wall. The track system includes rigid outer guide tracks and flexible inner track inserts that are connected to the guide tracks by means of flanges located on both. The flexible inserts include a channel that engages with a side edge of a retractable wall, holding the wall in place. The flexible nature of the track inserts allows the inserts to bend, which in turn allows the retractable wall to flex when force is exerted on the retractable wall without breaking the tracks or tearing the wall. When excessive force is applied, the channel of the flexible insert, the walls of which are thicker than the rest of the flexible insert, bend open, so that the side edge of the retractable wall disengages from the channel by means of an opening in the channel.

An improvement in the insulation of the rapid rolling type doors has an insulation piece positioned longitudinally on the stems to enable the door to operate well by providing the removal of accumulated air in the curtain system from the stems during up and down movement of the door and thereby preventing icing in the stems. Ventilation holes provide the discharge of the compressed air. A hole shutter curtain is provided wherein one side is fixed on the curtain and the other side is free and which overlies the ventilation holes by acting as a skirt when downward movement of the door is completed and prevents heat transfer.