Retractable screen assembly

Abstract

A retractable screen assembly comprising: a retractable screen; and a drawbar attached to the screen, wherein the drawbar is arranged and adapted to allow a user to move the screen between a retracted position and an extended position; wherein: the drawbar further comprises one or more retractable detent members, wherein in a first mode of operation the one or more retractable detent members may be moved into or allowed to assume a first position to secure the screen in an extended or partially extended position and wherein in a second mode of operation the one or more retractable detent members may be moved into or allowed to assume a second position to allow the screen to be at least partially retracted.

Description

[0001] RETRACTABLE SCREEN ASSEMBLY

[0002] BACKGROUND

[0003] The present invention relates to a retractable screen assembly, a retractable screen system, a track system for a retractable screen having a drawbar, a method of operating a retractable screen assembly and a method of installing a retractable screen assembly.

[0004] Retractable screen assemblies are known. A known retractable screen assembly comprises a retractable screen with a drawbar attached to the screen. The retractable screen is attached to a rotationally biased roller provided in a screen housing. A handle is provided on the drawbar. In order to extend the screen to an extended position it is necessary to pull the screen against tension and then secure the screen in the extended position.

[0005] A known way of securing the retractable screen in an extended position is to use a magnet in an end portion of the drawbar and locating a corresponding magnet in the housing of a receiver portion. Accordingly, the retractable screen is held in an extended position by utilising magnets.

[0006] However, a problem with the known arrangement is that the screen is not particularly secure in the extended position. Furthermore, the springs which rotationally bias the roller in the screen housing are placed under considerable load potentially for an extended period of time.

[0007] Accordingly, it is desired to provide an improved retractable screen assembly.

[0008] SUMMARY

[0009] According to an aspect there is provided a retractable screen assembly comprising: a retractable screen; and a drawbar attached to the screen, wherein the drawbar is arranged and adapted to allow a user to move the screen between a retracted position and an extended position; wherein: the drawbar further comprises one or more retractable detent members, wherein in a first mode of operation the one or more retractable detent members may be moved into or allowed to assume a first position to secure the screen in an extended position and wherein in a second mode of operation the one or more retractable detent members may be moved into or allowed to assume a second position to allow the screen to be at least partially retracted.

[0010] A retractable screen assembly according to various embodiments is advantageous in that the retractable detent member(s) which are utilised according to various embodiments provide a more secure and stronger way of securing the retractable screen in an extended position.

[0011] Furthermore, the use of one or more retractable detent members according to embodiments of the present invention reduces the load upon the roller biasing springs in the screen housing. Accordingly, the lifespan of the retractable screen assembly according to various embodiments is expended.

[0012] As will be discussed in more detail below, there are numerous further advantages of the retractable screen assembly according to various embodiments. For example, the tracks which are installed and the location of recesses or cut-outs in one or more of the rails of the tracks is flexible and enables flexibility when the retractable screen assembly is being installed.

[0013] Furthermore, new configurations are possible which were not possible with the known arrangement. For example, recesses or cut-outs can be provided at one or more intermediate positions along the length of the tracks enabling the screen to be secured in a variety of different partially open positions which provide partial screening and partial ventilation.

[0014] A yet further advantage is that the tracks can be arranged in linear, curved or L- shaped arrangements and two screens can be installed in the same space, wherein in a closed position the drawbars of the two screens abut against each other directly without requiring a receiver portion.

[0015] Another advantage is that the one or more retractable detent members when in a retracted position may ride along one or more of the rails forming a track and can have a self-cleaning function.

[0016] It will be appreciated that the track can be customised and can be run around corners to meet or abut against another drawbar.

[0017] The screens according to various embodiments may also be utilised in doorways with a user or a trolley moving across the lower track. According to various embodiments the lower track may have a relatively low profile which facilitates unimpeded movement over the lower track. It will be appreciated, therefore, that the retractable screen assembly according to various embodiments represents a significant advance in the art.

[0018] The one or more retractable detent members may comprise a first or upper detent member and a second or lower detent member. For example, the retractable screen assembly may comprise one or more first or upper track members and one or more second or lower track members, wherein the first retractable detent member is arranged to slide, in use, along the one or more first or upper track members and wherein the second retractable detent member is arranged to slide, in use, along the one or more second or lower track members.

[0019] The one or more first or upper track members may have one or more first recesses or cut-outs wherein in the first mode of operation the first retractable detent member engages with the one or more first recesses or cut-outs in order to secure the screen in an extended or partially extended position and wherein the one or more second or lower track members may have one or more second recesses or cut-outs and wherein in the first mode of operation the second retractable detent member engages with the one or more second recesses or cut-outs in order to secure the screen in an extended or partially extended position.

[0020] The retractable screen assembly may further comprise a first housing secured to or forming part of a first end of the drawbar, wherein the first retractable detent member is housed within the first housing. The retractable screen assembly may further comprise a second housing secured to or forming part of a second end of the drawbar, wherein the second retractable detent member is housed within the second housing.

[0021] According to an embodiment the first housing further comprises a first biasing member for biasing the first retractable detent member so that the first retractable detent member extends beyond the first housing in the first mode of operation. The second housing may further comprise a second biasing member for biasing the second retractable detent member so that the second retractable detent member extends beyond the second housing in the first mode of operation.

[0022] The drawbar may further comprise a handle and a linking mechanism. The handle may be connected to a first rod member via the linking mechanism and the handle may be connected to a second rod member via the linking mechanism.

[0023] The handle may be rotatable or translatable so that in the second mode of operation rotation or translation of the handle causes the linking mechanism to at least partially withdraw the first rod member into the first housing and the second rod member into the second housing, thereby facilitating a user being able to move or slide the drawbar (and attached screen) to a different position. The different position may be a retracted position. However, further embodiments are contemplated wherein the different position may be a further extended position.

[0024] The retractable screen assembly may further comprise a screen housing, wherein when the screen is in a retracted position at least a portion of the screen is retracted into the screen housing and wherein when the screen is in an extended position at least a portion of the screen extends beyond the screen housing.

[0025] The screen housing may further comprise a biasing mechanism, wherein the biasing mechanism applies a retraction or restoring force to the screen so as to cause the screen to retract into the screen housing and wherein a user must apply an opposed extension force to the drawbar in order to overcome the retraction or restoring force and cause the screen to assume an extended position.

[0026] According to an embodiment an end of the screen is mounted to one or more rollers, and wherein the biasing mechanism comprises one or more springs arranged for rotationally biasing the one or more rollers.

[0027] According to an aspect there is provided a retractable screen system comprising: a first or upper track; a second or lower track; and a retractable screen assembly as described above, wherein the retractable screen assembly is mounted or mountable so as to slide along the first or upper track and / or to slide along the second or lower track.

[0028] The retractable screen system may further comprise one or more receiver sections arranged to maintain the first or upper track and the second or lower track in a spaced relationship.

[0029] According to another aspect there is provided a retractable screen system comprising: a first or upper track; a second or lower track; a first retractable screen assembly having a first screen and a first drawbar, wherein a first end portion of the first drawbar is arranged to slide along the first or upper track and / or a second end portion of the first drawbar is arranged to slide along the second or lower track; and a second retractable screen assembly having a second screen and a second drawbar, wherein a first end portion of the second drawbar is arranged to slide along the first or upper track and / or a second end portion of the second drawbar is arranged to slide along the second or lower track. The first or upper track and the second or lower track may be arranged, in use, to form a linear, curved or L-shaped track.

[0030] According to an embodiment when the first screen is in an extended position and the second screen is in an extended position, then a portion of the first drawbar is arranged to abut against a portion of the second drawbar. In this double screen arrangement the two drawbars may abut each other without requiring an intermediate receiver portion.

[0031] According to an aspect there is provided a track system for a retractable screen having a drawbar, wherein the track system comprises: one or more track sections for engaging with an end portion of a drawbar; and one or more latch sections, wherein the one or more latch sections are connected or connectable either: (i) to an end of a track section; (ii) between two track sections; (iii) between a track section and another latch section; or (iv) between two other latch sections.

[0032] According to an aspect there is provided a method of operating a retractable screen assembly comprising: providing a retractable screen having a drawbar attached to the screen, wherein the drawbar comprises one or more retractable detent members; using the drawbar to move the screen from a retracted position to an extended position; and allowing the one or more retractable detent members to become engaged with a recess or cut-out provided in a track in order to secure the screen in the extended position.

[0033] According to an aspect there is provided a method of operating a retractable screen assembly comprising: providing a retractable screen having a drawbar attached to the screen, wherein the drawbar further comprises one or more retractable detent members and a handle connected to one or more retractable detent members via a linking mechanism; rotating or moving the handle to cause the linking mechanism to retract the one or more retractable detent members out of engagement with a recess or cut-out provided in a track in order for the screen to be moved; and using the drawbar to move the screen from an extended position to a retracted position.

[0034] According to an aspect there is provided a method of manufacturing or installing a retractable screen assembly comprising: providing a retractable screen; attaching a drawbar to the screen, wherein the drawbar is arranged and adapted to allow a user to move the screen between a retracted position and an extended position; and installing in the drawbar one or more retractable detent members, wherein in a first mode of operation the one or more retractable detent members are moved into or allowed to assume a first position to secure the screen in an extended or partially extended position and wherein in a second mode of operation the one or more retractable detent members are moved into or allowed to assume a second position to allow the screen to be partially or fully retracted.

[0035] BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Various embodiments of the present invention will now be described, by way of example only, and with reference to the accompanying drawings in which:

[0037] Fig. 1 shows a retractable screen according to an embodiment and shows a first retractable detent member located within an upper end portion of a drawbar engaging with a recess or cut-put provided in a rail forming part of an upper track and a second retractable detent member located within a lower end portion of the drawbar engaging with a recess or cut-out provided in a rail forming part of a lower track so as to secure the screen in a fully extended position;

[0038] Fig. 2 shows in greater detail a lower detent member engaged in a recess or cutout provided in a rail forming part of a lower track so as to assist with securing the screen in a fully extended position;

[0039] Fig. 3 illustrates a method of installation involving connecting a track endpiece having a recess or cut-out provided in a portion of a rail member into engagement with an end of a lower track, wherein screws are used to fix the track endpiece and the lower track into position;

[0040] Fig. 4 shows a subsequent installation step wherein after a track end piece and the lower track have been installed, a vertical receiver portion may be brought into slotted engagement with upstanding locating lugs which are provided on an upper surface of the track endpiece, wherein the receiver portion maintains the separation distance between an upper track and a lower track;

[0041] Fig. 5 shows a final installation step wherein a track cover is fitted along the outer facing length of the lower track and the track endpiece in order to hide the installation screws, prevent water ingress and to provide a seamless installation which is aesthetically pleasing; -n-

[0042] Fig. 6 shows a partial cutaway view of an upper retractable detent member engaged in a recess or cut-out provided in a rail of an upper track so as to assist with securing the screen in a fully extended position;

[0043] Fig. 7 shows in greater detail a handle portion which may be provided on the drawbar, wherein the handle portion is rotatable;

[0044] Fig. 8 shows an embodiment wherein a retractable screen assembly is shown installed with the screen housing being provided on the left-hand side and wherein when the screen is in a fully extended position then the drawbar abuts against a receiver portion, wherein the receiver portion is provided on the opposed (right-hand) side;

[0045] Fig. 9 shows an embodiment wherein a retractable screen assembly is shown installed with the screen housing on the right-hand side and wherein when the screen is in a fully extended position then the drawbar abuts against a receiver portion, wherein the receiver portion is provided on the opposed (left-hand) side;

[0046] Fig. 10 shows a double latch arrangement wherein a first track latch is slotted into engagement with the end of a first lower track portion, a second track latch is slotted into engagement with the first track latch, and wherein a second lower track portion is slotted into engagement with the second track latch;

[0047] Fig. 11 shows a retractable screen arrangement comprising two retractable screens, wherein a first left-hand side screen and a second right-hand side screen are provided, wherein when the first screen and the second screen are in a fully extended position then the drawbar of the first screen abuts against the drawbar of the second screen without an intervening receiver portion being provided or required between the two drawbars;

[0048] Fig. 12 shows an embodiment wherein two retractable screens are provided in a corner or L-shaped arrangement;

[0049] Fig. 13 shows an L-shaped track latch having two recesses or cut-out portions provided in a portion of a rail of the track, wherein the L-shaped track latch is slotted into engagement with a first track portion and a second track portion, wherein the first and second track portions are installed perpendicular to each other;

[0050] Fig. 14 shows a double screen arrangement arranged to form a corner or L- shaped arrangement;

[0051] Fig. 15 shows an L-shaped track latch having two recesses or cut-out portions in a portion of a rail of the track, wherein the L-shaped track latch is slotted into engagement with a first lower track portion and a second lower track portion, wherein the first and second lower track portions are installed perpendicular to each other;

[0052] Fig. 16A shows a low profile lower track according to another embodiment wherein a track cover may be fitted horizontally over the fixings in order to hide the fixings from view and to prevent water ingress and Fig. 16B shows a low profile lower track according to another embodiment wherein a track cover may be fitted horizontally over the fixings in order to hide the fixings from view according to another embodiment; and

[0053] Fig. 17A shows an isometric view of track joiner according to various embodiments which may be used to join together two sections of track, Fig. 17B shows a side profile view of the track joiner and Fig. 17C shows an end view of the track joiner.

[0054] DETAILED DESCRIPTION

[0055] Fig. 1 shows a retractable screen assembly 100 according to various embodiments. The retractable screen assembly 100 comprises a retractable screen 1 and a drawbar 2 which is attached along an edge of the screen 1 . The drawbar 2 has a handle 4 which enables a user to slide the screen 1 along upper and lower tracks 10,20. In particular, the screen 1 may be slid by a user between a retracted position wherein the screen 1 is retracted into a screen housing 5 and a fully extended position as shown in Fig. 1 wherein the drawbar 2 attached to the screen 1 abuts against a receiver portion (not shown).

[0056] However, as will be described in more detail below, other embodiments are also contemplated wherein the screen 1 may be secured in one or more partially extended positions i.e. a position in between a fully retracted position and a fully extended position. For example, it might be desired in some circumstances to provide a degree of screening but also to allow light and / or to pass through the opening in the screen assembly 100.

[0057] It will be understood that in relation to the embodiment shown in Fig. 1 , that when the screen 1 is (fully / partially) retracted into the screen housing 5, then there a (full / partial) void or opening which is defined by the edge of the drawbar 2, the upper track 10, a receiver portion (not shown, but which is provided in use on the opposite side to the screen housing 5 and which functions to maintain a desired spacing between the upper track 10 and the lower track 20) and the lower track 20. When the screen 1 is fully retracted into the screen housing 5 then the screen assembly 100 may be said to be in an “open” state. Equally, when the screen 1 is fully extended out of the screen housing 5 and is slid along the upper and lower tracks 10,20 so that the screen 1 assumes the position shown in Fig. 1 then the void or opening is now fully closed off by the screen 1 and hence the screen assembly 100 may be said to be in a “closed” state. It will be further appreciated that if the screen 1 is at an intermediate position between being fully retracted and fully extended, then the screen assembly 100 may be said to be in a “partially extended” or “partially retracted” state.

[0058] According to various embodiments the screen 1 may be mounted at one end to one or more rollers (not shown) which may be provided within the body of the screen housing 5. The one or more rollers (not shown) may be rotationally biased by one or more springs (not shown) so as to apply a retraction force to the screen 1 which has the effect of seeking to cause the screen 1 to retract into the body of the screen housing 5. A tension adjustment mechanism (not shown) may be incorporated into the screen housing 5 in order to adjust the tension applied by the springs (not shown) to the one or more rollers (not shown) and attached screen 1 . As a result, when the screen 1 is allowed to retract into the body of the screen housing 5, then the screen 1 retracts in a controlled manner.

[0059] The drawbar 2 may comprise one or more retractable detent members 3a, 3b. In the particular embodiment shown in Fig. 1 , a first or upper detent member 3a is provided in an end portion of the drawbar 2 and is arranged to engage, in use, with a recess or cut-out 30 provided in a portion of a rail (in e.g. endpiece 21) which forms part of an upper track 10. Similarly, the drawbar 2 may further comprise a second or lower detent member 3b which is arranged to engage, in use, with a recess or cut-out 30 provided in a portion of a rail (e.g. in endpiece 21) which forms part of a lower track 20.

[0060] In a first (screen extended) mode of operation the one or more retractable detent members 3a, 3b may be moved into or otherwise allowed to assume a first position relative to the one or more recesses or cut-outs 30 in order to secure the screen 1 in an extended or partially extended position. In a second (screen retracted) mode of operation the one or more retractable detent members 3a, 3b may be moved into or otherwise allowed to assume a second (different) position relative to the one or more recesses or cut-outs 30 in order to allow the screen 1 to be at least partially retracted. It is also contemplated that in the second mode of operation, when the retractable detent members 3a, 3b are disengaged then the screen 1 may be extended further. For example, the screen 1 may be in a partially extended state or position, and the one or more retractable detent members 3a, 3b may be disengaged in order to allow the screen 1 to assume a position where the screen is either fully extended or is further extended.

[0061] According to various embodiments the drawbar 2 may comprise a rotatable handle 4. However, other embodiments are also contemplated wherein the handle 4 may be translatable or otherwise movable. As will be described in more detail below, the handle 4 may be mechanically connected to the retractable detent members 3a, 3b via one or more linking mechanisms 5a, 5b so that a user can rotate the handle 4 so as to move (or allow) the retractable detent members 3a, 3b to move into or out of engagement with a recess or cut-out 30 provided in a portion of a track of a rail member. Other embodiments are also contemplated wherein the retractable detent members 3a, 3b are driven into and / or out of engagement with a recess or cut-out 30 by means of an electric motor. For example, according to various embodiments a small DC motor, stepper motor or micro servo motor may be utilised to push / pu II the retractable detent members 3a, 3b into / out of engagement with one or more recesses or cut-outs 30.

[0062] Each retractable detent member 3a, 3b may be housed in a housing 11 which may comprise a rod member 13 which extends through a portion of the housing 11 . For example, a distal end of the rod member 13 may either form one of the detent members 3a, 3b or alternatively a distal end of the rod member 13 may be attached to one of the detent members 3a, 3b. A proximal end of each rod member 13 may be attached to a linking mechanism 5a;5b which mechanically or otherwise links the handle 4 to one or both of the rod members 13. The linking mechanism 5a, 5b may comprise one or more elongated rods having a hook at one end which hooks into an end of a rod member 13. The other end of the linking mechanism 5a, 5b may be attached to the handle 4 so that rotation of the handle 4 causes the elongated rods to be translated with the effect of either retracting the detent members 3a, 3b into the body of the housing 11 or pushing or allowing the detent members 3a, 3b to move into an extended position such that the detent members 3a, 3b extend beyond the body of the housing 11 and may engage with one or more recesses or cut-outs 30 provided in a portion of a rail which forms part of a track. The rod members 13 may be biased by one or more springs 14.

[0063] According to various embodiments a track may be provided such as a first or upper track 10 and a second or lower track 20. However, it should be appreciated that in certain situations the screen assembly 100 may be provided in a horizontal configuration, for example, in a ceiling or ceiling panel or to provide a hatch in a floor.

[0064] According to various embodiments each track 10,20 may comprise two or more rails. For example, according to an embodiment a track 10,20 may comprise two rails - an inner or first rail and an outer or second rail. According to various embodiments one or more recesses or cut-outs 30 may be provided either in a portion of the inner or first rail and / or a portion of the outer or second rail. Other embodiments are contemplated wherein at least a portion of the track comprises a single rail and / or more than two rails e.g. three, four, five, six, seven, eight, nine, ten or more than ten rails.

[0065] According to various embodiments a retractable screen assembly 100 is provided which comprises a retractable screen 1 , wherein a drawbar 2 is attached to the screen 1 . The drawbar 2 may be arranged and adapted to allow a user to move the screen 1 between a partially or fully retracted position and a partially extended or fully extended position. In particular, the drawbar 2 may comprise a handle 4 and the handle 4 may be pushed, pulled or otherwise moved by a user to cause the screen 1 to slide along one or more upper or first tracks 10 and / or one or more lower or second tracks 20. The drawbar 2 may further comprise one or more retractable detent members 3a, 3b, wherein in a first mode of operation the one or more retractable detent members 3a, 3b may be moved or actuated into a first position in order to secure the screen 1 in a partially extended or fully extended position. In particular, in the first position the screen 1 may be held in a partially extended or fully extended position which at least partially or fully closes off a void defined by the screen housing 5, one or more upper or first tracks 10, one or more receiver portions (not shown in Fig. 1) and one or more lower or second tracks 20. Furthermore, the action of the one or more retractable detent members 3a, 3b engaging with one or more recesses or cut-outs provided in a portion of one or both rails of the upper and / or lower tracks 10,20 is sufficient to resist the tension applied to the screen 1 by a retraction mechanism provided within the screen housing 5. In a second mode of operation the one or more retractable detent members 3a, 3b may be moved or actuated into a different second position to allow the screen 1 to be at least partially or fully retracted. In particular, in the second mode of operation the one or more retractable detent members 3a, 3b may be moved or actuated out of engagement with or from the one or more recesses or cut-outs 30 provided in a portion of one or more rails of a track 10,20, thereby allowing the screen 1 to be slid along the upper and lower tracks 10,20.

[0066] Although the embodiment shown in Fig. 1 only has a latch, recess or cut-out portion 30 provided adjacent the receiver portion (not shown) i.e. at the furthermost end of the upper and lower tracks 10,20 from the screen housing 5, other embodiments are contemplated wherein one or more further latches, recesses or cut-outs 30 may be provided at one or more intermediate positions between the screen housing 5 and the receiver portion.

[0067] Embodiments are also contemplated wherein there is no latch, recess or cut-out provided at the furthest distance from the screen housing 5 along the upper or first track 10 and the lower or second track 20 but instead one or more latches, recesses or cutouts 30 may be provided at one or more intermediate positions along the upper or first and the lower or second tracks 10,20. Such an embodiment would enable a screen 1 to be secured e.g. in a half-open or partially open position to provide both a degree of screening but also facilitating ventilation and / or the transmission of light.

[0068] The one or more retractable detent members 3a, 3b may comprise a first or upper detent member 3a and a second or lower detent member 3b. The retractable screen assembly 100 may further comprise one or more first or upper track members 10 and one or more second or lower track members 20, wherein the first retractable detent member 3a is arranged to slide, in use, along at least a portion of the one or more first or upper track members 10 and wherein the second retractable detent member 3b may be arranged to slide, in use, along at least a portion of the one or more second or lower track members 20. The one or more first or upper track members 10 may have one or more first latching mechanisms, recesses or cut-outs 30 and wherein in the first mode of operation the first retractable detent member 3a may be arranged to be biased into engagement with one or more first latching mechanisms, recesses or cut-outs 30 in order to secure the screen 1 in a fully extended (i.e. closed) position (or other position) and wherein the one or more second or lower track members 20 may have one or more second latching mechanisms, recesses or cut-outs 30 and wherein in the first mode of operation the second retractable detent member 3b is also biased into engagement with the one or more second latching mechanism, recesses or cut-outs 30 in order to secure the screen 1 in a fully extended position (or other position).

[0069] The retractable screen assembly 100 may further comprise a first housing 11 secured to or forming part of a first end of the drawbar 4, wherein the first retractable detent member 3a is housed within the first housing 11. A second housing 11 may be secured to or form part of a second end of the drawbar 4, wherein the second retractable detent member 3b may be housed within the second housing 11 .

[0070] According to an embodiment the first housing 11 may further comprise a first biasing member 14 for biasing the first retractable detent member 3a so that the first retractable detent member 3a extends beyond the first housing 11 in the first mode of operation. Similarly, the second housing 11 may further comprise a second biasing member 14 for biasing the second retractable detent member 3b so that the second retractable detent member 3b extends beyond the second housing 11 in the first mode of operation. The one or more biasing members 14 may comprise one or more springs or equivalent.

[0071] The drawbar 2 may further comprise a handle 4 and one or more linking mechanisms 5a, 5b, wherein the handle 4 is connected to a first rod member 13 via a first linking mechanism 5a and wherein the handle 4 is connected to the second rod member 13 via a second linking mechanism 5b.

[0072] The handle 4 may be rotatable or translatable so that in the second mode of operation, rotation or translation of the handle 4 causes one or more of the linking mechanisms 5a, 5b to cause the first rod member 13 to at least partially retract into the first housing 11 and / or the second rod member 13 to at least partially retract into the second housing 11 , thereby facilitating a user being able to move or slide the drawbar 2 to a different position.

[0073] The retractable screen assembly 100 may further comprise a screen housing 5, wherein when the screen 1 is in a retracted position at least a portion of the screen 1 is retracted into the screen housing 5 and wherein when the screen 1 is in an extended position at least a portion of the screen 1 extends beyond the screen housing 5.

[0074] The screen housing 5 may further comprise a biasing mechanism (not shown). The biasing mechanism may be arranged to apply a retraction force to the screen 1 so as to cause the screen 1 to biased so as to retract into or within the screen housing 5 and wherein a user must apply an opposed extension force to the drawbar 2 in order to overcome the retraction force and hence cause the screen 1 to assume an extended position.

[0075] According to an embodiment an end of the screen 1 may be mounted to one or more rollers (not shown) within the screen housing 5. According to various embodiments the biasing mechanism may comprise one or more springs (not shown) for rotationally biasing the one or more rollers.

[0076] According to various embodiments a retractable screen system 100 is provided comprising a first or upper track 10 and a second or lower track 12 in combination with a retractable screen assembly. The retractable screen assembly may be mounted or mountable so as to slide or otherwise translate along at least a portion of a first or upper track 10 and / or to slide or otherwise translate along at least a portion of the second or lower track 20. The retractable screen system 100 may further comprise one or more receiver sections (not shown) which may be arranged to maintain the first or upper track 10 and the second or lower track 20 in a spaced relationship. The one or more receiver sections may be arranged between an end of the first or upper track 10 and an end of the second or lower track 20. For example, one or more locating lugs may be provided on a track endpiece which are received into one or more recesses provided in the one of more receiver portions. Additionally / alternatively, one or more locating lugs may be on an end of one or more receiver portions, wherein the locating lugs are received into one or more recesses provided in one or more of the track endpieces.

[0077] Fig. 2 shows in greater detail an end portion of a drawbar 2 which is shown in partial cutaway. The end portion may be secured to the drawbar 2 using one or more fasteners such as one or more screws 12. The end portion may comprise a housing 11 in which a rod member 13 is located. The rod member 13 may be biased by one or more springs 14 and is connected at a distal end to a retractable detent member 3b. Accordingly, the retractable detent member 3b is biased so as to project beyond a lower surface of the end portion. In the configuration shown in Fig. 2, the retractable detent member 3b is shown located or engaged within a recess or cut-out 30 which is provided in an outer rail of a track endpiece 21 . It will be understood that the rails of the one or more lower or second track members 20 together with the rails provided in the track endpiece 21 provide a lower track 20. Fig. 2 also shows a receiver portion 15 and a linking mechanism 5b. Fig. 3 shows a portion of lower or second track 20, wherein the lower or second track 20 comprises an inner rail 20a and an outer rail 20b. As will be described in more detail below, a lower portion of the screen may be arranged to sit between the inner rail 20a and the outer rail 20b and hence be guided along the lower track 20. Fig. 3 also shows a track endpiece 21 having a recess or cut-out 30 provided in a portion of an outer rail 21 b of the track endpiece 21 . An inner rail portion 21 a and the outer rail portion 21 b form the end section of the lower track 20. A receiver portion (not shown) may be slotted onto upstanding locating lugs 31 provided on an upper surface of the track endpiece 21. The main lower track portion 20 may be secured in place using one or more screws 25a or other fasteners. The track endpiece 21 may also be secured in place using one or more screws 25b or other fasteners.

[0078] Fig. 4 shows a receiver portion 15 being slid into position and received upon locating lugs 31 provided on the upper surface of the track endpiece 21 .

[0079] Fig. 5 shows a track cover 40 fitted on to the outer side portion of the main lower track 20 and the track endpiece 21 . The track cover 40 may be clipped into position and may be clipped into position to protect the track mechanism from water ingress, but also to cover the installation screws and provide a seamless installation.

[0080] Fig. 6 shows an upper retractable detent 3a shown engaged in a corresponding recess or cut-out 30 provided in the outer rail of an upper track endpiece 21 .

[0081] Fig. 7 shows a handle 4 provided in a central location on the drawbar 2. A user may push or pull on the handle 4 in order to slide the screen attached to the drawbar 2 along the upper and lower tracks so that the screen assumes either a retracted or extended position.

[0082] Fig. 8 shows an embodiment wherein a retractable screen assembly is shown installed with the screen housing 5 on the left-hand side and wherein when the screen 1 is in a fully extended position then the drawbar 2 abuts against a receiver portion 15, wherein the receiver portion 15 is provided on the opposed (right-hand) side to that of the screen housing 5.

[0083] Fig. 9 shows an embodiment wherein a retractable screen assembly is shown installed with the screen housing 5 on the right-hand side and wherein when the screen 1 is in a fully extended position then the drawbar 2 abuts against a receiver portion 15, wherein the receiver portion 15 is provided on the opposed (left-hand) side to that of the screen housing 5. Fig. 10 shows a double latch arrangement wherein a first track latch 20C is slotted into engagement with a first lower track portion 20, a second track latch 20D is slotted into engagement with the first track latch 20C, and wherein a second lower track portion 20B is slotted into engagement with the second track latch 20D.

[0084] Fig. 11 shows a retractable screen arrangement comprising a first left-hand side screen 1a and a second right-hand side screen 1 b, wherein when the first screen 1a and the second screen 1 b are in a fully extended position then the drawbar 2a of the first screen 1 a abuts against the drawbar 2b of the second screen 1 b without an intervening receiver portion between the two drawbars.

[0085] According to an embodiment a retractable screen system may be provided comprising a first or upper track 10 and a second or lower track 20. The retractable screen system may comprise a first retractable screen assembly having a first screen 1a and a first drawbar 2a, wherein a first end portion of the first drawbar 2a is arranged to slide along the first or upper track 10 and / or a second end portion of the first drawbar 2a is arranged to slide along the second or lower track 20. The retractable screen system further comprises a second retractable screen assembly having a second screen 1 b and a second drawbar 2b, wherein a first end portion of the second drawbar 2b is arranged to slide along the first or upper track 10 and / or a second end portion of the second drawbar 2b is arranged to slide along the second or lower track 20.

[0086] The first or upper track 10 and the second or lower track 20 may be arranged, in use, to form a linear, curved or L-shaped track.

[0087] According to an embodiment when the first screen 1a is in an extended position and the second screen 1 b is in an extended position, then a portion of the first drawbar 2a is arranged to abut against a portion of the second drawbar 2b.

[0088] Fig. 12 shows an embodiment wherein two retractable screens 1 a, 1 b are provided in a corner or L-shaped arrangement.

[0089] Fig. 13 shows an L-shaped track latch 26 having two recesses or cut-out portions 30 in a portion of a rail of the track, wherein the L-shaped track latch 26 is slotted into engagement with a first track portion 20c and a second track portion 20d, wherein the first and second track portions 20c, 20d are installed perpendicular to each other. A cover up strip or panel 40 may be secured to one or both of the track portions 20c, 20d.

[0090] Fig. 14 shows a corner or L-shaped arrangement.

[0091] Fig. 15 shows an L-shaped track latch 26 having two recesses or cut-out portions 30 in a portion of a rail of the track, wherein the L-shaped track latch is slotted into engagement with a first track portion 20c and a second track portion 20d, wherein the first and second track portions 20c, 20d are installed perpendicular to each other.

[0092] According to various embodiments a track system for a retractable screen having a drawbar is disclosed wherein the track system comprises one or more track sections for engaging with an end portion of a drawbar 2 and one or more latch sections, wherein the one or more latch sections are connected or connectable either: (i) to an end of a track section; (ii) between two track sections; (iii) between a track section and another latch section; or (iv) between two other latch sections.

[0093] Fig. 16A shows a horizontal track cover which clips on to a fixing in orderto hide the fixing from view according to an embodiment and Fig. 16B shows a horizontal track cover which clips on to another type of fixing in order to hide the fixing from view according to another embodiment.

[0094] Fig. 17A shows an isometric view of track joiner 170 according to various embodiments for joining together two sections of track together, Fig. 17B shows a side profile view of the track joiner and Fig. 17C shows a plan view of the track joiner.

[0095] In addition to the retractable screen assembly disclosed above, a method of operating a retractable screen assembly is also disclosed comprising providing a retractable screen having a drawbar attached to the screen, wherein the drawbar comprises one or more retractable detent members and using the drawbar to move the screen from a retracted position to an extended position. The method further comprises allowing the one or more retractable detent members to be engage with a recess or cutout provided in a track in orderto secure the screen in the extended position.

[0096] A method of operating a retractable screen assembly is also disclosed comprising providing a retractable screen having a drawbar attached to the screen, wherein the drawbar further comprises one or more retractable detent members and a handle connected to one or more retractable detent members via a linking mechanism. The method comprises rotating or moving the handle to cause the linking mechanism to retract the one or more retractable detent members out of engagement with a recess or cut-out provided in a track in order for the screen to be moved. The method further comprises using the drawbar to move the screen from an extended position to a retracted position.

[0097] A method of manufacturing or installing a retractable screen assembly is also disclosed comprising providing a retractable screen and attaching a drawbar to the screen, wherein the drawbar is arranged and adapted to allow a user to move the screen between a retracted position and an extended position. The method further comprises installing in the drawbar one or more retractable detent members, wherein in a first mode of operation the one or more retractable detent members and moved into or allowed to assume a first position to secure the screen in an extended position and wherein in a second mode of operation the one or more retractable detent members and moved into or allowed to assume a second position to allow the screen to be at least partially retracted.

[0098] While particular embodiments have been illustrated and described, it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the scope of the present invention.

Claims

Claims1 . A retractable screen assembly comprising: a retractable screen; and a drawbar attached to the screen, wherein the drawbar is arranged and adapted to allow a user to move the screen between a retracted position and an extended position; wherein: the drawbar further comprises one or more retractable detent members, wherein in a first mode of operation the one or more retractable detent members may be moved into or allowed to assume a first position to secure the screen in an extended or partially extended position and wherein in a second mode of operation the one or more retractable detent members may be moved into or allowed to assume a second position to allow the screen to be at least partially retracted.

2. A retractable screen assembly as claimed in claim 1 , wherein the one or more retractable detent members comprise a first or upper detent member and a second or lower detent member.

3. A retractable screen assembly as claimed in claim 2, further comprising one or more first or upper track members and one or more second or lower track members, wherein the first retractable detent member is arranged to slide, in use, along the one or more first or upper track members and wherein the second retractable detent member is arranged to slide, in use, along the one or more second or lower track members.

4. A retractable screen assembly as claimed in claim 3, wherein a portion of the one or more first or upper track members has one or more first recesses or cut-outs and wherein in the first mode of operation the first retractable detent member engages with the one or more first recesses or cut-outs in order to secure the screen in an extended or partially extended position and wherein the one or more second or lower track members has one or more second recesses or cut-outs and wherein in the first mode of operation the second retractable detent member engages with the one or more second recesses or cut-outs in order to secure the screen in an extended or partially extended position.

5. A retractable screen assembly as claimed in any of claims 2, 3 or 4, further comprising: a first housing secured to or forming part of a first end of the drawbar, wherein the first retractable detent member is housed within the first housing; and a second housing secured to or forming part of a second end of the drawbar, wherein the second retractable detent member is housed within the second housing.

6. A retractable screen assembly as claimed in claim 5, wherein:the first housing further comprises a first biasing member for biasing the first retractable detent member so that the first retractable detent member extends beyond the first housing in the first mode of operation; and the second housing further comprises a second biasing member for biasing the second retractable detent member so that the second retractable detent member extends beyond the second housing in the first mode of operation.

7. A retractable screen assembly as claimed in claim 6, wherein the drawbar further comprises a handle and a linking mechanism, wherein the handle is connected to a first rod member via the linking mechanism and wherein the handle is connected to a second rod member via the linking mechanism.

8. A retractable screen assembly as claimed in claim 7, wherein the handle is rotatable or translatable so that in the second mode of operation rotation or translation of the handle causes the linking mechanism to at least partially retract the first rod member into the first housing and the second rod member into the second housing, thereby facilitating a user being above to move or slide the drawbar to a different position.

9. A retractable screen assembly as claimed in any preceding claim, further comprising a screen housing, wherein when the screen is in a retracted position at least a portion of the screen is retracted into the screen housing and wherein when the screen is in an extended position at least a portion of the screen extends beyond the screen housing.

10. A retractable screen assembly as claimed in claim 9, wherein the screen housing further comprises a biasing mechanism, wherein the biasing mechanism applies a retraction force to the screen so as to cause the screen to retract into the screen housing and wherein a user must apply an opposed extension force to the drawbar in order to overcome the retraction force and cause the screen to assume an extended position.11 . A retractable screen assembly as claimed in claim 10, wherein an end of the screen is mounted to one or more rollers, and wherein the biasing mechanism comprises one or more springs arranged for rotationally biasing the one or more rollers.

12. A retractable screen system comprising: a first or upper track; a second or lower track; and a retractable screen assembly as claimed in claim 1 , wherein the retractable screen assembly is mounted or mountable so as to slide along the first or upper track and / or to slide along the second or lower track.

13. A retractable screen system as claimed in claim 12, further comprising one or more receiver sections arranged to maintain the first or upper track and the second or lower track in a spaced relationship.

14. A retractable screen system comprising: a first or upper track; a second or lower track; a first retractable screen assembly having a first screen and a first drawbar, wherein a first end portion of the first drawbar is arranged to slide along the first or upper track and / or a second end portion of the first drawbar is arranged to slide along the second or lower track; and a second retractable screen assembly having a second screen and a second drawbar, wherein a first end portion of the second drawbar is arranged to slide along the first or upper track and / or a second end portion of the second drawbar is arranged to slide along the second or lower track.

15. A retractable screen system as claimed in claim 14, wherein the first or upper track and the second or lower track are arranged, in use, to form a linear, curved or L- shaped track.

16. A retractable screen system as claimed in claim 14 or 15, wherein when the first screen is in an extended position and the second screen is in an extended position, then a portion of the first drawbar is arranged to abut against a portion of the second drawbar.

17. A track system for a retractable screen having a drawbar, wherein the track system comprises: one or more track sections for engaging with an end portion of a drawbar; and one or more latch sections, wherein the one or more latch sections are connected or connectable either: (i) to an end of a track section; (ii) between two track sections; (iii) between a track section and another latch section; or (iv) between two other latch sections.

18. A method of operating a retractable screen assembly comprising: providing a retractable screen having a drawbar attached to the screen, wherein the drawbar comprises one or more retractable detent members; using the drawbar to move the screen from a retracted position to an extended position; and allowing the one or more retractable detent members to engage with a recess or cut-out provided in a track in order to secure the screen in the extended position.

19. A method of operating a retractable screen assembly comprising:providing a retractable screen having a drawbar attached to the screen, wherein the drawbar further comprises one or more retractable detent members and a handle connected to one or more retractable detent members via a linking mechanism; rotating or moving the handle to cause the linking mechanism to withdraw the one or more retractable detent members out of engagement with a recess or cut-out provided in a track in order for the screen to be moved; and using the drawbar to move the screen from an extended position to a retracted position.

20. A method of manufacturing or installing a retractable screen assembly comprising: providing a retractable screen; and attaching a drawbar to the screen, wherein the drawbar is arranged and adapted to allow a user to move the screen between a retracted position and an extended position; and installing in the drawbar one or more retractable detent members, wherein in a first mode of operation the one or more retractable detent members may be moved into or allowed to assume a first position to secure the screen in an extended or partially extended position and wherein in a second mode of operation the one or more retractable detent members may be moved into or allowed to assume a second position to allow the screen to be at least partially or fully retracted.

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