The invention relates to a security grille system (1) for securing a passage at least partly. The security grille (2) is arranged to be brought from an extended state, in which the grille (2) can block the passage at least partly, into a retracted state, in which at least a part of the previously blocked part of the passage is unblocked. The security grille (2) comprises a multiplicity of bars (4), preferably substantially horizontally extending bars (4), connected by means of multiple elongated connecting elements for interconnecting respective bars (4). The security grille system (1) further comprises a chain connected to the grille (2), preferably a chain being flexible in only one dimension and/or being roller chain, and at least one chain limiting (28) member for at least locally limiting movement of the chain (19), e.g. in a direction in which it is flexible, such as to counteract that one or more links of the chain can be substantially moved away from a regular route along which the links move when the grille (2) is moved from its extended state to its retracted state or vice versa.

A retractable curtain system is provided and includes a curtain support system, a curtain, and a retraction system. The curtain support system includes a pair of outer walls and an upper frame to provide a curtain receiving space. The curtain covers the curtain receiving space and includes a first non-transparent panel and transparent panel connected to the first non-transparent panel. The retraction system is connected to the curtain to lower and raise the transparent panel.

A retractable barrier system for inhibiting access to designated private and public areas both indoors and outdoors, including by way of example but not limitation, retail and warehouse aisles and the like, includes a flexible screen retractable and extensible from a rotatable rod coupled to a mounting member, the mounting member having an attachment mechanism for coupling with a receiving member, wherein a winding mechanism is coupled to the rotatable rod for retractably receiving and extending the flexible screen, the flexible screen is comprised of material having a sufficient modulus of elasticity to promote substantially smooth retractably receiving thereof and may further include tapering between ends thereof, and the winding mechanism may include a guide member having a surface of sufficient diameter oriented substantially perpendicular to the flexible screen to guide the flexible screen upon retractably receiving the screen.

A retractable barrier system for inhibiting access to designated private and public areas both indoors and outdoors, including by way of example but not limitation, retail and warehouse aisles and the like, includes a flexible screen retractable and extensible from a rotatable rod coupled to a mounting member, the mounting member having an attachment mechanism for coupling with a receiving member, wherein a winding mechanism is coupled to the rotatable rod for retractably receiving and extending the flexible screen, the flexible screen is comprised of material having a sufficient modulus of elasticity to promote substantially smooth retractably receiving thereof and may further include tapering between ends thereof, and the winding mechanism may include a guide member having a surface of sufficient diameter oriented substantially perpendicular to the flexible screen to guide the flexible screen upon retractably receiving the screen.

The invention relates to a roller shutter (10, 32, 42, 51) for opening and closing a doorway having a door leaf (11) and side rails (17) for guiding the door leaf (11), and having a coiling device (14) for selectively rolling up the door leaf (11) for opening the doorway and unrolling the door leaf (11) for closing the doorway. For reducing or avoiding the risk of creating a polygon effect and for providing a roller shutter (10, 32, 42, 51) comprising a door leaf having rigid shutter elements with an increased height and/or with the possibility of applying an increased speed for opening and/or closing the door leaf the roller shutter (10, 32, 42, 51) is characterized in that a separate guiding device (21, 33, 43) is provided for guiding the door leaf (11) in the area between the side rail (17) and the coiling device (14), wherein the guiding device (21, 33, 43) is arranged to adjust to an increasing diameter and to a decreasing diameter of the coiling device (14).

The invention relates to a roller shutter (10, 32, 42, 51) for opening and closing a doorway having a door leaf (11) and side rails (17) for guiding the door leaf (11), and having a coiling device (14) for selectively rolling up the door leaf (11) for opening the doorway and unrolling the door leaf (11) for closing the doorway. For reducing or avoiding the risk of creating a polygon effect and for providing a roller shutter (10, 32, 42, 51) comprising a door leaf having rigid shutter elements with an increased height and/or with the possibility of applying an increased speed for opening and/or closing the door leaf the roller shutter (10, 32, 42, 51) is characterized in that a separate guiding device (21, 33, 43) is provided for guiding the door leaf (11) in the area between the side rail (17) and the coiling device (14), wherein the guiding device (21, 33, 43) is arranged to adjust to an increasing diameter and to a decreasing diameter of the coiling device (14).

A retractable curtain system is provided and includes a curtain support system, a curtain, and a retraction system. The curtain support system includes a pair of outer walls and an upper frame to provide a curtain receiving space. The curtain covers the curtain receiving space and includes a first non-transparent panel and transparent panel connected to the first non-transparent panel. The retraction system is connected to the curtain to lower and raise the transparent panel.

The invention relates to a roller shutter for opening and closing a doorway (12) having a door blade (11), the door blade (11) comprises several rigid shutter elements (13) which are hinged with each other, the shutter elements (13) are guided by side rails (18) at opposed sides of the doorway (12), wherein each shutter element (13) provides an end piece (19) at each horizontally spaced end of the shutter element (13) for spacing layers of rolled up shutter elements (13) apart from each other, each end piece (19) has at least one concave section (27) for coiling the end pieces (19) on a coiling device (14) and/or in layers on top of each other. For reducing the risk of weakening a connection between the end piece (19) and the shutter element (13), for reducing noise and/or vibrations during the opening and/or closing of the door way and/or to increase the stability of the roller shutter the roller shutter (10) is characterized in that at least some of the end pieces (19) having at least one plane gliding section (28), the plane gliding section (28) is arranged for interacting with a slide guide (36) of the side rail (18) for leading the end pieces (19) into and/or out of the side rails (18).

A tight-coiling rolling grille link and rolling grille system. Curved links are interconnected in vertical rows for a required height of the grille, rows are spaced apart for a required width of the grille, horizontal rods are inserted through aligned holes in the links, tubes are placed intermittently over the rods between the rows of links to maintain even spacing, and ends of the rods are mechanically secured to hold the rolling grille curtain together. The links of the grille are identical and are attached symmetrically via a tab and notch linkage scheme. The system prioritizes coiling as tightly as possible to fit in as little space above the opening as possible.

A tight-coiling rolling grille link and rolling grille system. Curved links are interconnected in vertical rows for a required height of the grille, rows are spaced apart for a required width of the grille, horizontal rods are inserted through aligned holes in the links, tubes are placed intermittently over the rods between the rows of links to maintain even spacing, and ends of the rods are mechanically secured to hold the rolling grille curtain together. The links of the grille are identical and are attached symmetrically via a tab and notch linkage scheme. The system prioritizes coiling as tightly as possible to fit in as little space above the opening as possible.