A hembar may define a front portion and a rear portion configured to slidably engage each other. The front portion and the rear portion, when slidably engaged, may define a slot configured to receive a piece of fabric. The front portion and the rear portion may be configured to clamp the piece of fabric within the slot. The front portion and the rear portion may be configured such that a width of the slot is adjustable. The front portion may define a first attachment surface and the rear portion may define a second attachment surface. The first attachment surface may define a rib. The second attachment surface may define a groove configured to receive the rib when the front portion is slidably engaged with the rear portion such that the piece of fabric is clamped within the slot.

A roller shutter may include a rotatable drum; a shutter curtain including a series of three or more elongate slats pivotally interlocked in a longitudinal-edge-to-longitudinal-edge arrangement and arranged parallel to the rotatable drum, wherein a first and second longitudinal end portions of each elongate slat may be respectively aligned to form a first side border and a second side border, respectively, of the shutter curtain, wherein the first and second longitudinal end portions of each elongate slat may be respectively provided with at least one eyelet-structure which protrudes therefrom, whereby a first and second rows of eyelet-structures are formed along the first and second side borders; and at least a first cord and a second cord respectively strung loosely through all eyelet-structures of respective row of eyelet-structures, and each cord may be configured to confine all eyelet-structures of the respective row of eyelet-structures within a length of each cord.

A multi-curtain assembly has curtain segments of a retractable curtain, the curtain segments having leading edges affixed to a bottom bar and extending between opened and closed positions by winding on and unwinding from a barrel assembly, each curtain segment being optionally connectable to the other curtain segment adjacent thereto by a fastener at respective adjacent edges of each curtain segment during unwinding. The multi-curtain assembly includes: a motor driving the barrel assembly of a first curtain segment, adjacent and further curtain segments meeting one another at an interface angle; and at least one curtain driving interface that passes along a rotational barrel driving force from the barrel assembly of the first one of the plurality of curtain segments. The driving interface being an interface for angle of 90 degrees, of less than 90 degrees, or greater than 90 degrees, or an interface for barrel assemblies at different heights.

A turnover device comprises a first turnover piece, a second turnover piece, a first pull rod and a second pull rod. The turnover device is immobilized upon impactor pull from the bottom. When a plurality of the first and the second turnover pieces are connected alternately, the second and the first turnover pieces are turned over one after another. A slotless rolling shutter door comprises two turnover devices which are arranged on two sides of the door body and can replace existing door slots formed in a wall body. The door body, with an improved appearance, is fixed without arranging the door slots in the wall body. When opening the door body, a door body winding device winds the turnover devices with door pieces to finally collect the door body and the turnover devices therein.

An elongated door seal for sealing the threshold gap of up-and-over doors in buildings, e.g. in garages, in order to repel mice and rats, and for cushioning the underside of the door blade, has A) an outer polymer material defining the form of the seal and made from one or more polymer materials, e.g. thermoplastic elastomers, B) at least 1 elongated sealing section intended to seal the threshold gap, C) at least one rodent proofing barrier comprising a plurality of substantially parallel elongated metal members embedded in the outer material of a sealing section with the elongated metal members arranged substantially in parallel to the longitudinal direction of the door seal and at some distance to each other, preferably arranged with substantially equal spacing, and D) at least one mounting section intended to be fastened to the door blade.

A system and method are provided for facilitating automated and manual segregation of internal areas within a structure, particularly in response to active shooter warnings, or other triggering events. Embodiments may provide automated systems and methods, products and product components to facilitate simplified and automated (1) deployment of mechanized safety and/or security (bulletproof) curtains, including certain safety curtains comprising, or otherwise formed of, replaceable bulletproof and/or other penetration-resistant materials, and/or (2) actuation of mechanized safety and/or security (bulletproof) doors, to effectively segregate open areas and hallways in buildings. Exemplary embodiments may: (a) limit lines of sight of a perpetrator; (b) interdict bullet flight paths; (c) restrict or eliminate a perpetrator's freedom movement; (d) confine areas of detected explosive ordnance detonations or dispersal of contaminants; (e) provide a means of trapping/isolating a perpetrator; and/or (f) provide local safe havens in active shooter, gunfire, explosive detonation, contaminant dispersal, and like threat scenarios/situations.

A hembar may define a front portion and a rear portion configured to slidably engage each other. The front portion and the rear portion, when slidably engaged, may define a slot configured to receive a piece of fabric. The front portion and the rear portion may be configured to clamp the piece of fabric within the slot. The front portion and the rear portion may be configured such that a width of the slot is adjustable. The front portion may define a first attachment surface and the rear portion may define a second attachment surface. The first attachment surface may define a rib. The second attachment surface may define a groove configured to receive the rib when the front portion is slidably engaged with the rear portion such that the piece of fabric is clamped within the slot.

The present invention is a bottom assembly for a breakaway door. The bottom assembly comprises a first mounting plate fixed on one of the faces of the breakaway door proximate to its bottom and a security edge formed of a loop of flexible material suspended from the bottom of the breakaway door. The security edge has a second tab sandwiched between the first mounting plate and the breakaway door to mount the security edge to the breakaway door. The loop of flexible material has an interior void at least partially filled with an internal cushion. The bottom assembly further includes a first padded bar including a bumper and a first tab extending from the bumper wherein the first tab is sandwiched between the first mounting plate and the breakaway door to mount the first padded bar to said breakaway door.

An adjustable vertical barrier placed at the bottom of a retractable screen to adjust for an uneven floor surface comprised of a housing for attached on one end of the screen enclosure and weighted lift bar within the housing for attachment of a felt gasket, whereby the lift bar is freely vertically movable within the housing so that the felt gasket conforms to the contour of a floor surface and the lift bar is retained within housing a foot on the lift bar cooperates with a first notch within the housing.

According to some aspects, provided are curtain assemblies configured to operate in high wind environments. The curtain assembly can include first and second track guide including internal security rails. The internal securing rails moveably engage end portions of fabric stiffeners to provide stability in the curtain. In some embodiments, the securing rails include ramp portions to accommodate drift in the curtain and/or fabric stiffeners without compromising operation of the curtain.