A retractable screen that is integrated within a wall cavity and fixed to an internal door frame. The screen has a base frame mounted to the support. The base frame comprises a lower elongate member a U shaped upper elongate member and two U shaped side elongate members each having an upper part and a lower part respectively fixed to the upper and lower elongate members. A lower guide track is mounted to the lower elongate member. An upper guide track assembly is mounted within the upper elongate member. The upper guide track assembly includes an elongate insert member with an upper guide track mounted therein and the elongate insert member is configured for insert installation into the upper elongate member. The side elongate members house a roller assembly for a screen.

A purification window embedded with a ventilation system, including: a window frame, and a double-layered glass window unit arranged in the window frame. An outdoor window screen roll and an indoor window screen roll are arranged at a left stile and a right stile, respectively. An upper middle position and a lower middle position of the double-layered glass window unit are respectively in rotational connection with a top rail via an upper shaft and a bottom rail via a lower shaft. The ventilation system includes: an air supply chamber and an exhaust chamber, both of which provided therein with T-shaped air dampers and fans. Both external edges of the outdoor window screen roll and the indoor window screen roll are provided with magnetic tapes configured for fixation connection with the upper shaft and the lower shaft.

Sanitary barrier systems and methods for preventing transmission of biological substances and protecting human health are provided. A retractable barrier system may include a first supporting member and a barrier film. The first supporting member may comprise a first attachment element configured to position the barrier system vertically in use. The barrier film may have a fixed edge and a free edge, wherein the fixed edge is connected to the first supporting member. The barrier film is extendible to a desired length in a use configuration and retractable back on the first supporting member in a storage configuration. The barrier system may include a retracting mechanism such as a crank or a spring-loaded roller. The barrier film may comprise a sanitary portion. The barrier system may be combined with stanchions or queue barriers to protect individuals waiting in lines. The barrier system may also be used to provide barrier inside a multi-person vehicle.

A cone and clamp assembly for a screen assembly comprises a substantially vertical supporting member about which a screen can be wound/unwound, a cone associated with at least one end of the supporting member and rotatable with the supporting member and at least one line member that can be wound onto and off the cone. The cone and clamp assembly comprises a clamp configured to hold the at least one line member relative to an external surface of the cone in an engaged position during transportation of the screen assembly or prior to operation of the screen assembly, a drive plate engaged with a pivot pin of the clamp, a cone plate coupled to the cone through the drive plate and the clamp, and an adjustable element coupled between the cone plate and the drive plate. Adjustment of the adjustable element in a first direction rotates the clamp toward the external surface of the cone and adjustment of the adjustable element in a second direction rotates the clamp away from the external surface of the cone.

There is provided a screen guide that engages a support rail or is detachable from the support rail at an intermediate position on the support rail. The support rail supports the screen guide and includes first and second engagement edges, and the screen guide is formed by connecting a plurality of guide pieces to one another in series. Each of the guide pieces includes a piece body that engages an end portion of a screen and an engagement member that includes first and second engagement portions that engage the first and second engagement edges of the support rail, respectively. Each of the engagement members is coupled to the corresponding piece body such that the engagement member is capable of being displaced to a first position at which the first and second engagement portions engage the first and second engagement edges, respectively, and to a second, detached position.

The present invention relates generally to a screen assembly that can be used in a window or door cavity, or any other area which may benefit from the assembly and which contains a flexible sheet like member (for instance an insect screen) wound about substantially vertical rod (for example), which can be pulled across the window or door cavity such that the screen extends and retracts in a horizontal direction and particularly to a system and method allowing more straightforward installation on site, quickly and easily.

A screen assembly includes a support structure. A roller assembly is mounted on the support structure. A flexible panel with a distal end is mounted on the roller assembly so that the flexible panel can be wound on to and off the roller assembly as the flexible panel is retracted and extended. Two opposed track assemblies are arranged on the support structure, sides of the flexible panel and each track assembly being configured so that the sides of the flexible panel can slide within the track assemblies as the flexible panel is retracted and extended. At least one of the track assemblies has a static support that is fixed relative to the support structure and a dynamic support that is displaceable relative to the static support. An adjustment mechanism is operatively connected to the static and dynamic supports to adjust a lateral position of the dynamic support relative to the static support. An elongate guide assembly is mounted on a proximal end of the flexible panel to guide movement of the flexible panel with respect to the track assemblies. An adjustment mechanism is operatively connected to the static and dynamic supports to adjust a lateral position of the dynamic support relative to the static support. An insert is mounted on at least one end of the guide assembly. The dynamic support of said at least one of the track assemblies includes a runner in which the insert is received to slide or roll with respect to the dynamic support as the flexible panel is retracted and extended.

The present invention consists of aluminium framework for the manufacture of doors or windows, which is applied in a door or window opening of a building. It comprises at least one fixed frame (1) and fixed or movable panels (4) which have central (6) and reinforcing (5) props, handles (3) (7), anti-pollen/mosquito net (9) winder integrated into a profile (10). It has a locking system (2) of the panels (4), which is integrated in the aluminium profiles of the fixed frame (1); a locking system (8) of the anti-pollen/mosquito net (9) allowing the profile (11) of the net (9) to be attached to the handle (7). The movements of the net (9) and the panels (4) can be performed either manually or automatically, in both cases this movement being facilitated by a slide rule (13) with integrated bearings.

A window includes a window frame and a screen mounting assembly. The window frame is formed with two rail slots. The screen mounting assembly is adapted to be connected to a window screen and includes a roller unit, a sliding unit and an interconnecting unit. The roller unit includes a roller seat. The sliding unit is slidable along the rail slots and defines an engaging groove. The interconnecting unit is operable between a disengaging state where the interconnecting unit is connected to the roller seat, and an engaging state where the interconnecting unit is separated from the roller seat and inserted into the engaging groove so as to engage the sliding unit, such that movement of the sliding unit along the rail slots results in winding and unwinding of the window screen.

A flexible-panel door is mountable to a door frame. Opposite ends of a top rail are slidably engaged with end caps respectively affixed to ends of first and second side rails, and opposite ends of a bottom rail are likewise slidably engaged with end caps respectively affixed to opposite ends of the first and second side rails. With the first side rail secured to or in contact with the first side of the door frame, the second side rail is moved into contact with the second side of the door frame such that the top and bottom rails slide relative to at least one of their respective end caps such that each combination extends across the width of the door frame. A flexible panel carried by one of the first and second side rails is extendable toward the other of the first and second side rails.