Patent Grant
9347258
Traditional window curtain installations are configured to provide for both functional and aesthetic purposes. In a conventional curtain, one functional goal is to reduce light impinging upon dwelling areas or other interior spaces coming from exterior windows. Other functions include providing for removal of the shading portions of the curtain to allow more light as desired. In some examples, this can be accomplished by winding a curtain around a roller operated by hand via a draw cord. An operator can raise or lower a curtain depending upon, for example, a desired amount of light. In other examples, the roller can be operated via a motor to raise and lower the curtain, covering exterior facing windows to any desired degree.
Typically, consumers select curtains based not only on the functional aspects provided, but also based on the aesthetic of the curtain. In some situations the physical layout of a space (e.g., a building home or office) dictates the shape and configuration of a given curtain. Traditional curtain designs can fail to incorporate non-traditional materials, and are often limited to conventional installation settings. Conventional settings include, for example, installation over vertically installed windows and/or sliding glass doors. Traditional curtains typically employ gravity to assist in the normal operation of the curtain. These traditional installations can fail to address operation outside of conventional parameters, and further can fail to address non-conventionally shaped openings.
Accordingly there is provided a retractable curtain assembly for installation in non-conventional spaces. In one embodiment, the retractable curtain assembly is configured for operation of a curtain on a slope. The curtain can be manipulated between an open position where the curtain is recessed and the opening on which the curtain is installed is visible and a closed position wherein the curtain is extended to cover the opening. The curtain can also be manipulated to occupy various positions between the open and closed positions. A track guide coupled to a track insert can be configured to hold the curtain in place during operation, enabling transition between the closed and open position where the assembly operates on a slope. The track guide and track insert can be constructed and arranged to mate with structures on the curtain. In one example, a zipper edge on the curtain travels in a channel structure constructed on the track insert. The zipper edge is configured to hold the curtain within the track insert while allowing the curtain to move between the open and closed position. The track insert can be configured to maintain tension within the curtain allowing movement of the curtain along a sloped plane without deflection of the curtain. In some examples, the track insert can be fixed within the track guide. In other examples, the track insert can be configured to ride within a channel defined in the track guide. In some embodiments, the dimensions of the channel in the track guide can be constructed to permit some movement of the track insert within the channel defined in the track guide. Permitting movement of the track insert within the track guide can relieve tension in the curtain and assist in operation. In some settings, wind on the curtain can increase tension until the curtain binds and cannot be moved. In some examples, allowing some play in the track insert within the channel defined by the track guide prevents binding conditions.
According to one aspect, a curtain assembly is provided. The curtain assembly comprises a curtain selectably moveable between an open position and a closed position, a track guide that defines a plane of operation of the curtain as it moves between the open position and the closed position, and a track insert coupled to the track guide, wherein the curtain is moveably coupled to the track insert, wherein the track insert defines a channel of operation at which the track insert and the curtain are moveably coupled, and wherein the curtain travels along the channel of operation during transition between the open and the closed position. According to one embodiment, the curtain assembly further comprises a connection portion of the curtain constructed and arranged with an end portion having a width greater than the channel of operation and a travel portion having a width less than the width of the channel of operation at which the track insert and curtain are moveably coupled. According to one embodiment, the end portion is comprised of a plurality of teeth connected to a side of the curtain, and the plurality of teeth define the width greater than the width of the channel of operation.
According to one embodiment, the curtain assembly further comprises a bottom rail constructed and arranged to provide tension within the curtain to maintain a shape of the curtain within the plane of operation. According to one embodiment, the curtain assembly further comprises at least one stiffener element constructed and arranged to maintain a shape of the curtain within the plane of operation. According to one embodiment, the curtain is a fabric curtain. In one example, the curtain is a flat or substantially flat fabric curtain. According to one embodiment, the plane of operation is defined on a slope. According to one embodiment, the slope is greater than 10 degrees. According to one embodiment, the slope is greater than 20 degrees. According to one embodiment, the slope is greater than 30 degrees. According to one embodiment, the slope is greater than 40 degrees.
Tension on the curtain can be provided between opposed tracks and configured to insure the curtain remains disposed between the tracks over the entire length of the curtain's operation. Conventional curtains and curtain assembly fail to operate properly when installed on a sloping surface. Conventional curtains are typically configured for vertical motion alone. Angling the operation of a traditional curtain results in the curtain dragging against the installed surface, falling out of any curtain track, assuming the curtain is able to operate at all. According to one embodiment, the retractable curtain assembly can even be installed in horizontal positions in which some conventional curtain assemblies cannot function.
According to one aspect, a curtain assembly is provided. The curtain assembly comprises at least a first and second curtain selectably moveable between an open position and a closed position, a track guide having first and second opposed sides, wherein the first and second side define a plane of operation for the first curtain as it moves between the open position and the closed position, a first and second track insert coupled to the opposed sides of the track guide, wherein the first curtain is moveably coupled to the first and second track inserts, wherein the first and second track inserts each define a respective channel of operation at which the track insert and the curtain are moveably coupled, and wherein the curtain travels along the channel of operation during transition between the open and the closed position, and an air barrier defined between the at least first and second curtains configured to improve energy properties of the curtain assembly.
In one embodiment, the air barrier includes opposed side boundaries, wherein opposed regions of the opposed side boundaries are defined by the track guide and the first and second track inserts. In one embodiment, the curtain assembly further comprises a brush portion constructed and arranged to bridge a spacing between the first and second curtains, wherein the brush portion is constructed and arranged to further define a boundary of the air barrier. In one embodiment, the curtain assembly further comprises a brush portion constructed and arranged to seal a top portion of the air barrier. In one embodiment, the brush portion is constructed and arranged to traverse the width of the first and second curtains. In one embodiment, the curtain assembly further comprises a base member connecting the first and second curtains. In one embodiment, the base member is constructed and arranged to connect bottom portions of the first and second curtains. In one embodiment, the base member is constructed and arranged to define a boundary of the air bather. In one embodiment, the base member is constructed and arranged to define a bottom boundary of the air barrier. In one embodiment, the base member is constructed and arranged to traverse the width of the first and second curtains.
In one embodiment, the second curtain is constructed and arranged of a cellular fabric. In one embodiment, the first curtain has an energy value substantially less that the second curtain. In one embodiment, the curtain assembly, further comprises at least one stiffener guide constructed and arranged to strengthen the cellular fabric. In one embodiment, the curtain assembly further comprises a second track guide having a first and second side, wherein the first and second side define a plane of operation for the second curtain as it moves between the open position and the closed position. In one embodiment, the first and second sides include respective channel guides. In one embodiment, the curtain assembly further comprises at least one stiffener guide positioned within the cellular fabric, wherein the at least one stiffener guide is constructed and arranged to ride within the respective channel guides during operation of the curtain assembly. In one embodiment, the curtain assembly further comprises a first roll tube, wherein the first roll tube is configured to wind the first and second curtains around the roll tube during operation of the curtain assembly, wherein the first and second curtains are connected to the roll tube in overlapping positions.
In one embodiment, the curtain assembly further comprises a roller guide configured to maintain a spacing between the first and second curtains. In one embodiment, the roller guides define an upper border region of the air barrier. In one embodiment, the curtain assembly further comprises a bottom rail connected to at least one of the first and second curtains. In one embodiment, the bottom rail includes a length adjustment channel. In one embodiment, at least one of the first and second curtains is connected to a bar within the bottom rail, wherein the bar is constructed and arranged to travel within the adjustment channel. In one embodiment, the bar is weighted to pull excess length of a connected curtain into the adjustment channel.
In one embodiment, the curtain assembly further comprises a second track guide having a first and second side, wherein the first and second side define a plane of operation for the second curtain as it moves between the open position and the closed position, a first and second track insert coupled to opposed sides of the second track guide, wherein the second curtain is moveably coupled to the first and second track inserts, wherein the first and second track inserts each define a respective channel of operation at which the track insert and the second curtain are moveably coupled, and wherein the second curtain travels along the channel of operation during transition between the open and the closed position. In one embodiment, the curtain assembly further comprises a first connection portion of the first curtain constructed and arranged with an end portion having a width greater than a width of the channel of operation and a travel portion having a width less than the width of the channel of operation at which the track insert and the first curtain are moveably coupled.
In one embodiment, the end portion is comprised of a plurality of teeth connected to a side of the first curtain at the end portion, wherein the plurality of teeth are constructed and arranged to have a width greater than the width of the channel of operation. In one embodiment, the curtain assembly further comprises a bottom rail constructed and arranged to provide tension within the curtain to maintain a shape of the first curtain. In one embodiment, the curtain assembly further comprises at least one stiffener element constructed and arranged to maintain a shape of the first curtain. In one embodiment, the curtain is a substantially flat fabric curtain.
In one embodiment, the plane of operation is defined on a slope relative to an installed surface. In one embodiment, the plane of operation relative to an installed surface is greater than 10 degrees. In one embodiment, the plane of operation relative to an installed surface is greater than at least one of 20 degrees, 30 degrees, and 40 degrees.
In one embodiment, each of the first and second sides of the track guide are constructed and arranged to have exterior walls and interior walls, wherein the exterior and interior walls define respectively a first channel and second channel. In one embodiment, a first portion of the first track insert is positioned in the first channel defined by the exterior and interior walls. In one embodiment, a second portion of the first track insert extends between the interior walls and into the second channel. In one embodiment, the second portion of the first track insert includes a connection channel defining a respective side of the channel of operation. In one embodiment, the curtain assembly further comprises a roll tube including at least one recessed portion to accept the width of the end portion. In one embodiment, the curtain assembly further comprises at least one tension box connect to the curtain to provide operational force in the direction of the plane of operation. In one embodiment, the curtain assembly further comprises a bottom rail is constructed and arranged to moveably operate within the second channel and to provide tension within the curtain to maintain a shape of the curtain.
According to one aspect a curtain assembly is provided. The curtain assembly comprises at least a first and a second curtain selectably moveable between an open position and a closed position, a roll tube configured to wind to the first and second curtains around the roll tube during operation of the curtain assembly, wherein the first and second curtains are connected to the roll tube in overlapping positions, and a roller guide configured to maintain a spacing between the first and second curtains during operation. In one embodiment, the curtain assembly further comprises an air barrier defined between the first and second curtains configured to improve energy properties of the curtain assembly. In one embodiment, the curtain assembly further comprises at least one brush portion constructed and arranged to improve an air seal at a top portion of the air barrier. In one embodiment, at least one brush portion is constructed and arranged to traverse the width of the first and second curtains. In one embodiment, the curtain assembly further comprises a bottom rail connected to at least one of the first and second curtains. In one embodiment, the bottom rail includes a length adjustment channel. In one embodiment, at least one of the first and second curtains is connected to a bar within the bottom rail, wherein the bar is constructed and arranged to travel within the adjustment channel. In one embodiment, the bar is weighted to pull excess length of a connected curtain into the adjustment channel.
Still other aspects, embodiments, and advantages of these exemplary aspects and embodiments, are discussed in detail below. Any embodiment disclosed herein may be combined with any other embodiment in any manner consistent with at least one of the objects, aims, and needs disclosed herein, and references to “an embodiment,” “some embodiments,” “an alternate embodiment,” “various embodiments,” “one embodiment” or the like are not necessarily mutually exclusive and are intended to indicate that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment. The appearances of such terms herein are not necessarily all referring to the same embodiment. The accompanying drawings are included to provide illustration and a further understanding of the various aspects and embodiments, and are incorporated in and constitute a part of this specification. The drawings, together with the remainder of the specification, serve to explain principles and operations of the described and claimed aspects and embodiments.
Various aspects of at least one embodiment are discussed below with reference to the accompanying figures. Where technical features in the figures, detailed description or any claim are followed by reference signs, the reference signs have been included for the sole purpose of increasing the intelligibility of the figures, detailed description, and claims. Accordingly, neither the reference signs nor their absence are intended to have any limiting effect on the scope of any claim elements. In the figures, each identical or nearly identical component that is illustrated in various figures is represented by a like numeral. For purposes of clarity, not every component may be labeled in every figure. The figures are provided for the purposes of illustration and explanation and are not intended as a definition of the limits of the invention. In the figures:
The curtain 108 is constructed to ride within guide tracks 114 during operation. Guide tracks 114 can include track inserts (not shown in
According to one embodiment, curtain 108 is attached to a bottom rail 112. Bottom rail 112 is constructed and arranged to assist in the operation of the curtain assembly between an open position and a closed position. In some embodiments, bottom rail 112 can include weights at 120. The weights are configured to assist in unwinding the curtain 108 from the roll tube 104 into a closed position and to provide resistance as the curtain 108 is wound around roll tube 104 towards an open position. In some embodiments, the weights at 120 are optional. In horizontal implementations, for example, weights at 120 provide little or no assistance in operation of the curtain assembly. In some embodiments, bottom rail 112 includes wheel assemblies (not shown) at both ends of the bottom rail 112. The wheel assemblies guide the bottom rail 112 within the track guides 114. The wheel assemblies can be constructed to reduce friction during normal operation of the curtain assembly. In some embodiments, bottom rail 112 can define a tubular structure in which weights can be placed. In other embodiments, bottom rail 112 defines an elliptical structure to which curtain 108 can be attached. In another example, curtain 108 can form a pocket at the base of the curtain in which bottom rail 112 can be located.
Optionally, bottom rail 112 can be attached to tension cables 116 and tension boxes 118. Tension cables 116 and tension boxes 118 can be configured in conjunction with weights 120 to assist in operation of the curtain 108 between open and closed positions. In some embodiments, tension cables 116 and 118 can be used instead of weights at 120. The tension boxes 118 exert a force on the bottom rail 112 pulling the bottom rail 112 towards the tension boxes through tension cables 116.
Mounting brackets 102 at the end of the roll tube 104 mate with mounting structures (not shown) that can be installed on a given surface. In one example, mounting brackets 102 are positioned for installation at the top of a window. In some settings, mounting brackets 102 can be positioned within a frame of a window. Track guides 114 can be installed below and/or adjacent to the mounting brackets 102. Track guides 114 can be installed on the side edges of a window frame. In some embodiments, track guides can be installed adjacent to a window frame so that the curtain assembly can cover the window and the frame.
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In some examples, the compressible portions 228 can be constructed of felt, sponge material, rubber, bristles or other compressible material. The compressible portions 228 can be configured to permit side to side movement of track insert 204 in the second channel 217. According to some embodiments, the capability of side to side movement assists in the operation of the curtain assembly. During periods of increased pressure on the curtain (e.g., 108 in
When a curtain is moved between the open and the closed positions or anywhere in between the portion of the curtain or the portion of the zipper edge will move freely in channel 206. Additionally, a bottom rail 230 of the curtain assembly is also configured to move freely within a third channel 212 defined by the track guide 208. A wheel assembly 232 assists in free movement of the bottom rail 230 in the third channel 212. The wheel assembly 232 may comprise a single wheel and an axis connecting the wheel to the bottom rail 230. In other embodiments, different configurations can be employed including, for example, ball bearing structures, or other structures that are configured to reduce friction between the bottom rail 230 and the track guide 208 as the bottom rail 230 and/or curtain move within the third channel 212. According to one embodiment, the third channel 212 can include housing structures 234. In one example, housing structures 234 are constructed and arranged to include bristles at 236 which also can be configured to maintain the position of bottom rail 230 within the third channel 212 during operation of a curtain assembly. In one alternative, housing structures 234 can be constructed and arranged with felt strips at 236 instead of bristles. Other compressible materials can also be employed at 236 to guide and control movement of the bottom rail 230 during operation of a curtain assembly. In some implementations housing structures 234 and bristles 236 can be omitted.
According to some embodiments, track guide 208 further defines a fourth channel 214. The fourth channel 214 is constructed and arranged to provide greater structural integrity to track guide. In some embodiments, track guide 208 can be fabricated from aluminum and various structures can be constructed, e.g., fourth channel 214, to provide for a desired strength for track guide 208. In some embodiments, the fourth channel can be omitted. In other embodiments different materials can be used to mold, cast, and/or extrude a track guide and a fourth channel 214 can be included as necessary to establish a desired strength for the track guide 208. In one example, the track guide 208 can be constructed of steel. In another example, the track guide 208 can be constructed of plastic.
The material selected and the dimensions of track assembly 200 can vary depending upon a given installation site. Materials can be selected based on aesthetic as well as based on structural considerations. In one example, the dimensions of the track guide can be 1.44 inches at 252, 0.67 inches at 254, 0.79 inches at 256, 1.255 inches at 258, 1.93 inches at 572, and 0.47 inches at 260. In other embodiments, different dimension can be employed. Further, different material used to construct the track guide 208 can require different dimensions and/or permit smaller installation dimensions.
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In other embodiments, tension provided by opposite track guides, e.g., 310, to which the curtain is attached, can maintain the shape and appearance of the curtain 306 during operation and in any fixed position. Further, weight provided by bottom rail 308 can also provide tension within the curtain 306 that maintains the shape and appearance of the curtain 306. The weight of bottom rail 308 can be adjusted based on the tension desired in the curtain 306 and an installation slope at which curtain assembly 300 is installed. Bottom rail 308 and curtain 306 are guided within track guide 310 during operation of the curtain assembly between an open position, where the curtain is wound around roll tube 304 and a closed position where curtain 306 is unwound from roll tube 304 to cover the opening on which curtain assembly 300 is installed.
Curtain 306 is configured to be moveable to occupy any position along track guide 310 based on rotation of roll tube 304. In some embodiments, the rotation of roll tube 304 can be accomplished via a draw string mechanism (not shown) or other motorized structures (not shown) for rotating roll tube 304 in both directions. In other embodiments, curtain 304 can be configured to be in an equilibrium state when not moving, but configured to tend towards a direction of motion when operated, for example, by hand. In some embodiments, springs can be installed in roll 304 to balance the weight applied by bottom rail 308, so that curtain 306 can be easily manipulated by hand.
According to another aspect, a retractable curtain assembly is provided for installation in openings having angled sides, including angled top, bottom, and side edges. Conventional curtains are installed about or abutting windows to cover rectangular openings. Traditionally, windows or other exterior openings are configured with squared or nearly squared edges which present rectangular or squared spaces. Squared and rectangle openings can be covered during the operation of conventional curtains. Operating curtain assemblies within and/or over irregularly shaped openings presents difficulties that some conventional curtains cannot overcome. According to one embodiment, a retractable curtain assembly is configured to provide complete coverage of an opening as the dimensions of the opening change. In one particular embodiment, the curtain assembly is configured to cover a trapezoidal window. According to another example, a variable length bottom rail can be configured to expand and contract during the transition between an open and closed position of a curtain to insure proper coverage of the trapezoidal window. In another embodiment, the variable length bottom rail is configured to ride within a track guide. In one example, the variable length bottom rail is connected to a wheel assembly that is constructed and arranged to fit within a channel defined in the track guide. During transitions between an open and closed position, the wheel assembly is configured to exert pressure on the variable length bottom rail, causing the variable length bottom rail to expand or contact lengthwise to fit within the opening defined by the track guide.
According to one aspect, a curtain assembly is provided. The curtain assembly comprises a curtain selectably moveable between an open position and a closed position connected to a variable length bottom rail, a track guide that defines a side of a plane of operation of the curtain as it moves between the open position and the closed position, the variable length bottom rail constructed and arranged to vary in length as a distance between a pair of track guides varies, and a wheel assembly moveably coupled to the track guide, wherein the variable length bottom rail is coupled to the wheel assembly, and the wheel assembly is configured to exert force on the variable length bottom rail causing the variable length bottom rail to expand and contract in response to changing distances between the pair of track guides during transition between the open and the closed position. According to one embodiment, the curtain assembly further comprises at least one stiffener elements constructed and arranged to maintain a shape of the curtain within the plane of operation. According to one embodiment, the curtain is a fabric curtain. According to one embodiment, the plane of operation is defined on a slope. According to one embodiment, the slope is greater than 10 degrees. According to one embodiment, the slope is greater than 20 degrees. According to one embodiment, the slope is greater than 30 degrees. According to one embodiment, the slope is greater than 40 degrees.
The curtain assembly 400 includes mounting brackets 402 for installing a roll tube 404 having a curtain 408 that covers, for example, a window. In some examples, the curtain 408 is made of fabric. In other examples, the fabric curtain can be made of natural fibers, and in others can be constructed of artificial fibers. In some other examples, the curtain can be constructed of a blend of natural and artificial fibers. According to one embodiment, the fabric curtain 408 is a flat sheet of fabric wound around the roll tube 404. Rotation of roll tube 404 causes curtain 408 to transition between an open (recessed) and a closed (extended) position. The rotation of roll tube 404 can be controlled via a drawn string (not shown) or in some embodiments curtain assembly 400 can include motors for rotating roll tube 404 (not shown). The curtain 408 may include fabric stiffeners 406 to provide rigidity. Fabric stiffeners 406 can be constructed of various materials, including metal bands fixed to one or more sides of the curtain. In some embodiments, the fabric stiffeners 406 can be omitted.
According to one embodiment, curtain 408 is attached to a bottom rail 412. Bottom rail 412 is constructed and arranged to assist in the operation of the curtain assembly 400 between an open position and a closed position. In some embodiments, bottom rail 412 includes a wheel assembly 420 and stabilizer pins 422 at both ends of the bottom rail 412. The wheel assemblies 420 guide the bottom rail 412 within the track guides 414. The stabilizer pins 422 ride within the track guides 414A-B and insure the bottom rail 412 does not rotate during operation. The wheel assemblies 420 can be constructed to reduce friction during normal operation of the curtain assembly. Further, the wheel assemblies 420 mate with an internal channel constructed within the track guides 414A-B. As the wheel assemblies 420 travel in the channels constructed in the track guides 414, the change in distance between the wheel assemblies 420 results in an operational force applied to the bottom rail 412. The operational force applied to the bottom rail 412 causes the bottom rail 412 to change in length as the bottom rail is moved along the track guide 414. The change in length required depends upon the structure in which the curtain assembly is installed. Dashed line 450 illustrates a hypothetical plumb line drawn from mounting bracket 402. The angle of the slope 452 can vary depending upon the installation site. Further, track guides 414A-B are illustrated with only one track guide 414A showing a sloped installation. In other embodiments, both track guides can be installed at angles relative to respective plumb lines. Further curtain assembly 400 can be configured to operate over and/or within a variety of structures having differently sloping sides, top, and/or bottom edges. In some other embodiments, not only may structure have irregularly shaped edges, top, and/or bottom sides, requiring the track guides to be sloped, but the plane of operation of the curtain itself may also be sloped. An example of a curtain assembly showing a sloped plane of operation is illustrated in
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In some embodiments, the bottom rail 412 can define a tubular structure in which weights can be placed. In other embodiments, the bottom rail 412 defines an elliptical structure to which curtain 408 can be attached. In another example, curtain 408 can form a pocket at the base of the curtain in which the bottom rail 412 can be located. In one embodiment, stabilizer bars 430 and 432 can be constructed within the bottom rail 412. In one example, either one or both stabilizer bars 430-432 can be fixed to one side of the bottom rail 412. The first portion 424 and the second portion 426 of the bottom rail 412 are configured to slide over stabilizer bars 430-432 as the bottom rail 412 expands and contracts in length during operation of the curtain assembly 400.
Optionally, bottom rail 412 can be attached to tension cables 416 and tension boxes 418 to assist in moving the curtain assembly 400 between the open and closed positions. The tension cables 416 and tension boxes 418 can be configured in conjunction with weights at 410 to assist in operation of the curtain 408 between the open and closed positions. Tension boxes 418 exert a force on bottom rail 412 through tension cables 416 towards the closed position of curtain 408.
In some embodiments, the bottom rail 412 can include weights at 410. The weights 410 are configured to assist in unwinding the curtain 408 from the roll tube 404 into a closed position and to provide resistance as the curtain 408 is wound around roll tube 404 towards an open position. The weights 410 can be attached to stabilizer bars 430-432. In some alternatives, the weights 410 can be disposed within the bottom rail 412. In some embodiments, the weights at 410 are optional. In horizontal implementations, for example, weights at 410 provide little or no assistance in operation of the curtain assembly. In some embodiments, tension cables 416 and 418 can be used instead of weights at 410.
Mounting brackets 402 at the end of the roll tube 404 mate with mounting structures (not shown) that can be installed on a given surface. In one example, mounting brackets 402 are positioned for installation at the top of a window. In some settings, mounting brackets 402 can be positioned within a frame of a window. The track guides 414A-B can be installed below and/or adjacent to the mounting brackets 402. The track guides 414A-B can be installed on the side edges of a window frame and configured to follow non-traditional shapes. In some examples, the covered structure may define a trapezoid, a triangle, etc. In some embodiments, the track guides can be installed adjacent to a window frame so that the curtain assembly can cover both the window and the frame.
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The track guide 508 includes a first channel 510 constructed and arranged to house a wheel assembly 504. The wheel assembly 504 is moveably coupled to the track guide 508 within the first channel 510. During operation of the curtain assembly (e.g., the raising and lowering of a curtain and attached bottom rail) the wheel assembly 504 rides within the first channel 510 as the bottom rail moves with the curtain. According to one embodiment, the wheel assembly 504 is constructed of paired wheels 550 and 551 connected by a first rod 552 about which the wheels 550-551 rotate. The first rod 552 is connected to a second rod 554 which is connected to one end of the bottom rail 530 at a bottom rail end 556. The connection between the second rod 554 and the bottom rail end 556 can include welds or additional structures to secure the second rod 554 to the bottom rail end 556. In one embodiment, second rod 554 can be configured to extend through a hole in the bottom rail end 556, and locking structures 558 and 560 can be configured to hold the second rod 554 in place against bottom rail end 556. In one example, second rod 554 can include threaded portions and locking structures 558 and 560 can be configured to mate with the threaded portions of the second rod 554. In one alternative, the second rod 554 can be attached directly to the bottom rail 530, and the locking structures 558-560 can be omitted. In one example, the second rod 554 can be welded directly to bottom rail end 556. In another alternative, the second rod 554 can include a threaded portion to which the bottom rail end 556 mates.
In one example, the second rod 554 extends through a second channel 517 defined by the track guide 508 between a first 518 and second flange 520 of the track guide 508. The second rod 554 rides within the second channel as the bottom rail 530 travels in the track guide 508. The wheels 550 and 551 of the wheel assembly 504 ride against the first 518 and second flange 520, during operation of the bottom rail 530. As the distance between the track guide 508 and a second track guide increases a force is applied to the bottom rail 530 through the wheel assembly 504 and a respective wheel assembly housed within the second track guide. The force applied to the bottom rail 530 causes its expansion and/or contraction. For example, as shown above with respect to
When a curtain is moved between the open and the closed positions or anywhere in between the bottom rail 530 is also configured to move freely within a third channel 512 defined by the track guide 508. According to one embodiment, the third channel 512 can include housing structures 534. In one example, housing structures 534 are constructed and arranged to include bristles at 536 which can be configured to maintain the position of bottom rail 530 within the third channel 512 during operation of a curtain assembly. In one alternative, housing structures 534 can be constructed and arranged with felt strips at 536 instead of bristles. Other compressible materials can also be employed at 536 to guide and control movement of the bottom rail 530 during operation of a curtain assembly. In some implementations housing structures 534 and bristles 536 can be omitted. In some implementations, the housing structures and compressible material at 536 can be configured to dampen sound during operation of a curtain assembly.
According to some embodiments, the track guide 508 further defines a fourth channel 514. The fourth channel 514 is constructed and arranged to provide greater structural integrity to the track guide. In some embodiments, the track guide 508 can be fabricated from aluminum and various structures can be constructed, e.g., fourth channel 514, to provide for a desired strength for track guide 508. In some embodiments, the fourth channel can be omitted. In other embodiments different materials can be used to mold, cast, and/or extrude a track guide and a fourth channel 514 can be included as necessary to establish a desired strength for the track guide 508. In one example, the track guide 508 can be constructed of steel and/or stainless steel. In another example, the track guide 508 can be constructed of plastic.
The material selected and the dimensions of track assembly 500 can vary depending upon a given installation site. Materials can be selected based on aesthetic as well as based on structural considerations. In one example, the dimensions of the track guide can be 1.44 inches at 562, 0.67 inches at 564, 0.79 inches at 566, 1.255 inches at 568, 1.93 inches at 572, and 0.47 inches at 570. In other embodiments, different dimension can be employed. Further, different material used to construct the track guide 508 can require different dimensions and/or permit smaller installation dimensions.
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Further, weight provided by bottom rail 608 can also provide tension within the curtain 606 that maintains the shape and appearance of the curtain 606. The weight of bottom rail 608 can be adjusted based on the tension desired in the curtain 606 and an installation slope at which curtain assembly 600 is installed. Bottom rail 608 and curtain 606 are guided within track guide 610 during operation of the curtain assembly between an open position, where the curtain is wound around roll tube 604 and a closed position where curtain 606 is unwound from roll tube 604 to cover the opening on which curtain assembly 600 is installed. Curtain 606 is configured to be moveable to occupy any position along track guide 610 based on rotation of roll tube 604. In some embodiments, the rotation of roll tube 604 can be accomplished via a draw string mechanism (not shown) or other motorized structures (not shown) for rotating roll tube 604 in both directions. In other embodiments, curtain 604 can be configured to be in an equilibrium state when not moving, but configured to tend towards a direction of motion when operated, for example, by hand. In some embodiments, springs can be installed in roll tube 604 to balance the weight applied by bottom rail 608, so that curtain 606 can be easily manipulated.
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According to one embodiment, tubes 708 and 710 are fixed to one end 706 of the bottom rail 700. In other embodiments, either tube can be fixed to the end 706 of the bottom rail. In still other embodiments, each tube can be fixed to opposite ends of the bottom rail. And in some implementation, one or more tubes can be employed in bottom rail 700. In some examples, at least one of the one or more tubes can be fixed to an end of the bottom rail. Tubes 708 and 710 can be constructed with wheels at 718 to facilitate the movement of a first section 712 and a second section 714 of the bottom rail 700 relative to each other. During operation of a curtain assembly with sloped track guides, the distance between the track guides increase and decreased over the length of the track guides. Accordingly, expandable bottom rail 700, increase and decrease in length based on the distance between the track guides. The increase and decrease in length occurs based on the lateral movement of the first 712 and section sections 714 relative to each other guided by tubes 708 and 710. One or the other of the first 712 and second 714 sections of the bottom rail 700 can include mating structures not shown for receiving the tubes 708 and 710. In one example, channels can be defined within the first section 712 for receiving tubes 708 and 710. The tubes 708 and 710 can slide freely in the defined channels to permit the first 712 and 714 second section of the bottom rail to move. Movement of the first and second section increase and decreases the space between the first and second sections shown at 716 based on the distance between track guides of a given curtain assembly.
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According to another aspect, curtain assemblies can be constructed and arranged with overlapping curtains and corresponding structures. According to one embodiment, a multiple roll tube head box can be employed to cover multiple roll tubes which house any number of curtains configured for a given area.
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Use of overlapping curtains in various curtain assemblies can achieve significant improvements in sound reduction and energy efficiency in terms of insulating power. Upon mating with the recessed frame at 1098 and air pocket between curtains 1080 and 1090 assists in reducing noise and provides a greater capacity than either curtain alone in preventing changes in energy through the covered area. In some implementations, the air pocket between curtains 1080, 1090 increases the curtain assembly's R value (a measure of thermal resistance conventionally used in construction). The improvement in thermal resistance is realized even during movement of the curtains between open and closed positions and in various fixed positions between open and closed. In addition to thermal resistance improvement, noise reduction capability is also improved in various embodiments.
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The second curtain can be selected based on its energy properties, including for example, a desired R value, or noise reduction capability. In some examples, this allows the curtain 1106 to be selected based on aesthetic properties. According to some embodiments, the second curtain 1110 is constructed of a cellular fabric. Cellular fabric curtains are known to provide good energy properties based on air pockets formed within the cellular member of the curtain. A cellular curtain can have multiple layers of cellular members.
The second curtain 1110 can be constructed and arranged to create an air pocket 1114 between the curtain 1106 and the second curtain 1110. In some implementations, the air pocket improves the R value for the curtain assembly. In some embodiments, the air pocket is employed for improving noise levels of the separate curtains that make up the curtain assembly.
Roller Guide 1118 can be installed to insure curtain 1106 is mated to the second curtain 1110. In one example, a head rail 1112 mated to the second curtain can be fixed to the head box 1102. The head rail 1112 for the second curtain can be constructed with a flexible portion 1113. The flexible portion 1113 can comprise bristles, a fabric strip, or a resilient and compressible material. The flexible portion 1113 is positioned to form a connected between the head rail 1112 and the curtain 1106 through the flexible portion 1113. The flexible portion allows for movement of the curtain 1106, for example during operation of the curtain, while maintaining the connection. The roller guide 1118 can also be position to insure a connection between the head rail 1112 and the curtain 1106 or between the curtain 1106 and the second curtain 1110. In some embodiments, the roller guide can also be configured to permit some deflection to assist in the operation of the curtain 1106 while maintaining the connection between the curtain 1106 and the second curtain 1110. The connection between flexible portion 1113 and the curtain 1106 can form an upper boundary for the air pocket 1114.
In some embodiments, a bottom rail 1120 can be attached to curtain 1106. The bottom rail can be attached to a second bottom rail 1122 fixed to the second curtain 1110. The base 1124 of the curtain assembly where the bottom rails 1120 and 1124 connect can form the to bottom boundary for the air pocket 1114. The side boundaries for the air pocket 1114 are not shown in
In some examples, the compressible portions 1328 can be constructed of felt, sponge material, rubber, bristles or other compressible material. The compressible portions 1328 can be configured to permit side to side movement of track insert 1304 in the second channel 1317. According to some embodiments, the capability of side to side movement assists in the operation of the curtain assembly. During periods of increased pressure on a curtain compressible portions 1328 can be compressed relieving tension in the curtain and insuring the curtain does not become bound in place during operation.
When a curtain is moved between the open and the closed positions or anywhere in between the portion of the curtain or the portion of the zipper edge will move freely in channel 1306. Additionally, a bottom rail (not shown) of a curtain assembly can be configured to move freely within a third channel 1312 defined by the track guide 1308. In some examples, a bottom rail can be constructed with a wheel assembly (e.g., 232,
According to some embodiments, track guide 1308 further defines a fourth channel 1314. The fourth channel 1314 is constructed and arranged to provide greater structural integrity to track guide. In some embodiments, track guide 1308 can be fabricated from aluminum and various structures can be constructed, e.g., fourth channel 1314, to provide for a desired strength for track guide 1308. In some embodiments, the fourth channel can be omitted. In other embodiments different materials can be used to mold, cast, and/or extrude a track guide and a fourth channel 1314 can be included as necessary to establish a desired strength for the track guide 1308. In one example, the track guide 1308 can be constructed of steel. In another example, the track guide 1308 can be constructed of plastic.
Track assembly 1300 mates with teeth 1302 of a zipper edge, in particular, teeth 1302 are configured to mate with a track insert 1304. Track insert 1304 defines a channel 1306 in which a portion of the curtain or a portion of a zipper edge and teeth 1302 may move freely during transitions between opened and closed positions of a curtain. The teeth 1302 and the channel 1306 are constructed and arranged to prevent the curtain from coming free of the track insert 1304. The material selected and the dimensions of track assembly 1300 can vary depending upon a given installation site. Materials can be selected based on aesthetic as well as based on structural considerations.
According to another aspect, a curtain assembly is provided. According to one embodiment, the curtain assembly is configured to fit within the space defined in a window box of a conventional interior window. The window box defines the interior portion of the space in which a window is installed. Typically a window is recessed into a wall so as to be flush or near to flush with the exterior surface of a building in which it is installed, shown for example in
The curtain assembly can be constructed and arranged to open and close paired curtains to cover a window, shown for example in
In some embodiments, the curtain assembly can be constructed and arranged to include a sound absorbing curtain. In one example the sound absorbing curtain is a fabric curtain. In some embodiments, the sound absorbing is installed in the rear curtain position. The sound absorbing fabric can be configured in conjunction with the air pocket defined between the paired curtains to provide improved noise reduction capability. In other embodiments, both curtains can be configured of sound absorbing material to further increase the noise reduction capability. In some embodiments, the paired curtains are attached to a single roller in the head box (discussed in greater detail below). The single roller can be operatively connected to a motor, permitting automatic raising and lowering of the paired curtains. The single roller can also be configured to operate manually to raise and lower the paired curtains.
In other embodiments, the curtain assembly can be constructed and arranged to include an energy efficient curtain. In one example, the energy efficient curtain can be a fabric curtain configured to reduce energy transferred through any window. The energy efficient curtain can be configured to reduce energy loss and/or heat gain. In some embodiments, conventional fabrics can be installed having a low energy coating, a silver lining, and known insulation properties, among other examples. The paired curtains can be configured to establish an air pocket between the curtains. The air pocket is configured to increase the energy efficiency of the curtain assembly. In some embodiments, the paired curtains are attached to a single roller in the head box. The single roller can be operated manually and/or can be motorized to raise and lower the curtains into position over a window.
Shown in
Curtain 1501B can be constructed of a variety of materials. In some examples the construction material can depend on a desired energy value for the curtain assembly and/or a noise reduction capability desired. A second curtain 1501A can also be wound around roll tube 1503A housed in the head box 1500. The second curtain 1501A can be a different type of curtain than the curtain 1501A. The second curtain 1501B is arranged to face the interior of, for example, a dwelling in which the curtain assembly is installed.
In some embodiments, the second curtain is positioned towards the opening to be covered (e.g., the window) by an installed curtain assembly. The curtain 1501B can be positioned to conceal the second curtain 1501A when viewed from an interior location. For example, the curtain assembly can be positioned to cover an exterior window and the second curtain 1501A can be positioned closest to the window (a rear position), with the curtain 1501B covering the second curtain (a front position) from an interior perspective.
The second curtain can be selected based on its energy properties, including for example, a desired R value, or noise reduction capability. In some examples, this allows the curtain 1501B to be selected based on aesthetic properties. According to some embodiments, the second curtain 1501A is constructed of a low e coated fabric. Low-e coated fabric is configured to have a low energy emission ratio. Low e fabric can be constructed with metallic materials or materials having semi-conductive properties. In some examples, a fabric curtain can include a silver lining configured to improve the energy characteristics of the curtain and/or the curtain assembly. In some examples, other insulated fabric curtains can be employed. Low energy emissions curtains can be configured to limit heat and/or cold loss depending upon the environment in which the curtain assembly is installed.
The second curtain 1501A can be constructed and arranged to create an air pocket 1514 between the curtain 1501B and the second curtain 1501A. In some implementations, the air pocket improves the R value for the curtain assembly. In some embodiments, the air pocket is employed for improving noise level reduction capability of the separate curtains that make up the curtain assembly.
Roller Guide 1503B can be installed within the head box 1500 to position the second curtain 1501A closer to the opening to be covered. Further, in some embodiments roller guide 1503B can be positioned within the head box 1500 to provide the spacing between curtain 1501A and 1501B that defines a portion of air pocket 1514. In one example, roller guide 1503B is constructed having a 1.5″ diameter. In some embodiments, different roller guides having different diameters can be installed in head box 1500 to define different sized air pockets 1514. Further the diameter of the roller guide is constructed to place curtain 1501A closer to any opening covered by a curtain assembly, and to position curtain 1501B towards the interior side of the covered opening.
In one example, the dimensions of head box at 1505A and C are constructed to fit within a variety of window frames. In one example, the head box 1500 is constructed having a height of 5.5″ at 1505A and depth 1505C of 5″. Other dimensions for the height and depth of head box can be constructed according to the dimensions of window and/or window box in which the head box is installed. According to some embodiments, head box 1500 can be constructed with a closure cap 1505B configured to conceal the interior structures of head box 1500, including roll tube 1503A and roller guide 1503B from an interior side viewing position.
According to some embodiments, brush seals 1506A, B, and C are positioned within the head box 1500 and mated with curtain 1501A and second curtain 1501B to improve the air pocket defined at 1514. Brush seals 1506A, B, and C maintain contact with curtain 1501A and 1501B during operation of the curtain assembly between open and closed positions. Brush seals 1506A, B, and C resist air flow into and out of air pocket 1514. In some embodiments, brush seals 1506A, B, and C improve the integrity of air pocket 1514 increasing the R value of the curtain assembly. In other embodiments, the increased integrity of air pocket 1514 improves the noise reducing properties of the curtain assembly. In some embodiments, brush seals 1506A, B, and C can be constructed of bristles, a fabric strip, or a resilient and compressible material.
In some embodiments, a bottom rail 1504B can be attached to curtain 1501B. The bottom rail 1504B can be weighted to assist in the operation of the curtain 1501B between an open and closed position. Curtain 1501A can also be attached to bottom rail 1504A. The bottom rail 1504A can be configured with a channel 1504C configured to allow for a difference in operating length of curtains 1501A and 1501B. As curtains 1501A and B transition between an open and closed position the difference in positioning of curtains 1501A and 1501B can result in differences in operating length. Channel 1504C in bottom rail 1504A is constructed and arranged to allow for variation in the lengths of curtains 1501A and 1501B during operation. In some embodiments, bottom rail 1504A is constructed to allow curtain 1501B to slide into channel 1504C. In one example, bottom rail 1504A is constructed and arranged with a 1″ channel, providing for an operating length difference of up to 1″. Curtain 1501A is connected to bar 1510. Bar 1510 is constructed with a diameter that allows bar 1510 to move within channel 1504C but mate with an upper portion of bottom rail 1504A upon lift of the curtain 1501A.
In some embodiments, when curtain 1501A is raised bar 1510 meets with an upper portion of bottom rail 1504A. Once bar 1510 meets with an upper portion of the bottom rail, both are lifted during continued lift of the curtain. When curtain 1501A is lowered, bottom rail 1504A meets with a portion of the window frame 1550 in which head box 1500 is installed. Once bottom rail 1504A contacts the portion of window frame 1550 continued lowering of curtain 1501A allows bar 1510 to descend within channel 1504C. The spacing provided by channel 1504C enables curtains 1501A and 1501B to have different operating lengths, while maintaining a seal with between curtains 1501A and 1501B and the portion of the window frame 1550. In some embodiments, bottom bar 1504C can include a brush seal 1506D to improve the connection between bottom rail 1504C and the portion of the window frame at 1550. In some embodiments, a bottom rail 1504B can be attached to curtain 1501B. The bottom rail 1504B can be weighted to assist in the operation of curtain 1501B. Unwinding curtains 1501A and 1501B can be assisted by gravity. Increasing the weight of the bottom rails 1504A and 1504B can increase the force applied to unwind curtains 1501A-B during operation of a curtain assembly. Bottom rail 1504B can also include a brush seal (not shown).
The side boundaries for the air pocket 1514 are not shown in
Shown in
In some embodiments, mounting brackets 1650 attach to a window frame to support a head box (not shown) in which roll tube 1503A is installed. In some embodiments, offset portions 1503C of roll tube 1503A can be mated directly to mounting brackets 1650. In other embodiments, roll tube 1503A and offset portions 1503C can be mated to structures within a head box, and the head box can be mated to mounting brackets 1650. Roll tube 1503A can be constructed with an offset portion both or either end of roll tube 1503A at 1503C. The offset portions 1503C are configured to provide addition space for the width of zipper edges 1601C of curtain 1501B. Offset portions 1503C are constructed with diameter less than the diameter of the roll tube 1503A. The spacing provided by the different diameter of offset portions can be dependent on the dimensions of the opening covered by curtain assembly. For example, the greater the height of the opening the longer the curtain and corresponding zipper edges. In some examples, the greater the length of the zipper edges the larger the volume of space the zipper edges will occupy when wound around roll tube 1503A. The greater volume occupied by zipper edges can be accommodated by increasing the length of the offset portions or reducing the diameter of the offset portion. In some embodiments, offset portion is constructed with a length of two inches. In some further embodiments, the diameter of the offset portion is to constructed to be one half inch less than the diameter of the roll tube 1503A.
As curtains 1501B (
Returning to
Track guides 1602A define channels for both curtains 1501B and 1501A (one side of an example track showing a view of both channels is illustrated in
Frontal view 1660
In some embodiments, mounting brackets 1650 attach to a window frame to support a head box (not shown) in which roll tube 1503A is installed. In some embodiments, offset portions 1503C can be mated directly to mounting brackets 1650. In other embodiments, roll tube 1503A and offset portions 1503C can be mated to structures within a head box, and the head box can be mated to mounting brackets 1650. Roll tube 1503A is constructed with an offset portion on either or both ends at 1503C. The offset portions 1503C are configured to provide addition space for the width of zipper edges 1601C of curtain 1501A as curtain 1501A is wound around roll tube 1503A. In some embodiments, curtain 1501B can also include zippered edge, and offset portions can be configured to accept the width of zipper edges from both curtains. Offset portions 1503C can be configured to accept the additional width of any zipper edges on curtains 1501A and 1501B.
Zipper edges 1601D are configured to operate within a channel of track guide 1602A. Zipper edges 1601C are mated to the edges of curtain 1501B so that the zipper edges mate with the channel of track guide preventing horizontal movement of the curtain within track guides 1602A, but permitting vertical movement of the curtain 1501B within track guides 1602A (i.e. raising and lowering of curtain 1501B in response to rotation of roll tube 1503A).
Shown in
In some embodiments, each of the curtain channel portions can be constructed and arranged as discussed above with respect to
In some alternatives, each of the curtain channel portions 1751 and 1752 can be constructed and arranged as discussed in any of
In some embodiments, track inserts 1702B and 1702C can be constructed and arranged as discussed above with respect to
Returning to
A portion of track insert 1702C is positioned within the first channel 1753 and at least a portion of a yoke 1799 of the track insert 1702C is positioned within a channel opening 1755. The exterior edges of opening 1755 are defined by a first 1756 and second flange 1757 of the track guide 1602A. Track insert 1702C includes a first 1758 and second cap 1759 portion that are constructed to hold the track insert 1702C in the first channel 1753 and channel opening 1755. The first 1758 and second 1759 cap portions operate in conjunction with a base portion 1761 of the track insert 1702C to hold the track insert in place. In some embodiments, the track insert 1702C can include compressible portions at 1763.
In some examples, the compressible portions 1763 can be constructed of felt, sponge material, rubber, bristles or other compressible material. The compressible portions 1763 can be configured to permit small side to side movements of track insert 1702C in the channel opening 1755. According to some embodiments, the capability of side to side movement assists in the operation of the curtain assembly. During periods of increased pressure on the curtain compressible portions 1763 can be compressed relieving tension in the curtain and insuring the curtain does not become bound in place during operation. In some embodiments, compressible portions 1763 are constructed of sound deadening sponges.
When curtains 1501A-B are operated between open and closed positions or anywhere in between the portion of the curtains and/or the portion of the respective zipper edges will move freely up and down in channels defined in respective track inserts (e.g., at 1711A and 1711B). Additionally, a bottom rail of the respective curtains (not shown) can also be configured to move freely within a third channel (e.g., 1762 and 1763) defined by the track guide 1602A.
According to one embodiment, the channel 1762 can include housing structures 1764. In one example, housing structures 1764 are constructed and arranged to include bristles at 1765 which also can be configured to maintain the position of respective bottom rails 1504A-B within the respective channels 1762 and 1763 during operation of a curtain assembly. In one alternative, housing structures 1764 can be constructed and arranged with felt strips at 1765 instead of bristles. Other compressible materials can also be employed at 1765 to guide and control movement, for example, of the respective bottom rails 1504A-B during operation of a curtain assembly. In some implementations housing structures 1764 and bristles 1765 can be omitted. In one example, 1765 includes a base 1768 that can be pressure fit and/or glued into position. Bristles 1769 extend from the base at 1768 and are configured to contact curtain structures within for example, channel 1762.
According to some embodiments, track guide 1602A further defines another channel at 1766 and 1767 for each respective channel portion 1751 and 1752. The channels 1766 and 1767 are constructed and arranged to provide increased structural integrity to track guide 1602A. In some embodiments, track guide 1602A can be fabricated from aluminum and various structures can be constructed, e.g., channels 1766 and 1767, to provide for a desired strength for track guide 1602A. In some embodiments, the channels 1766 and 1767 can be omitted. In other embodiments different materials can be used to mold, cast, and/or extrude a track guide, and channels 1766 and 1767 can be included as necessary to establish a desired strength for the track guide 1602A. In one example, the track guide 1602A can be constructed of steel. In another example, the track guide 1602A can be constructed of plastic. In yet another, exterior portions of track guide 1602A can be composed of aluminum and the interior track inserts can be constructed of plastic.
The material selected and the dimensions of track guide 1602A can vary depending upon a given installation site. Materials can be selected based on aesthetic as well as based on structural considerations. In one example, the dimensions of the track guide can be as follows: Portion 1751 and 1752 respective widths (measured top to bottom of illustration) of 1.44 inches, channel 1753 and 1754 can be 1.255 inches wide (measured top to bottom of illustration), channel 1755 can be 0.525 inches wide (measured top to bottom of illustrates section), the interior of channel 1753 can be 0.67 inches long (measured left to right of illustration), the spacing between housing structures 1764 of respective channel portions 1751 and 1752 can be 1.10 inches, the interior of channel 1762 (measured from interior edge to opening left to right) can be 0.67 inches long, 1766 and 1767 can be 0.47 inches long (from left edge to interior right side), to provide some examples. In one embodiment, the exterior portions of track guide 1602A are constructed of aluminum having thickness at each portion indicated by references T-1, T-2 of 0.06 inches and indicated by T-3 of 0.04 inches. In other embodiments, different dimension can be employed. Further, different materials used to construct the track guide 1602A can require different dimensions and/or permit smaller installation dimensions. In some embodiments, dimensions of the opening to be covered by the curtain assembly can dictate the dimensions of the head box and internal structures described. For purposes of clarity not all structures in
In some embodiments, curtain 1501A can include stiffener elements (not shown) to assist in providing rigidity to fabric curtain 1501A. Stiffener elements can be attached to curtain 1501A and extend laterally across the curtain. In some embodiments, the stiffener elements can be mated to channel 1895 to provide additional support and to hold curtain 1501A in place during operation. In particular, stiffener elements can move freely up and down in channel 1895 with curtain 1501A is raised or lowered into portion. In some embodiments, a bottom rail 1504B be mated with channel 1895. Bottom rail 1504B can also be constructed to mate with channel 1895. In some examples, bottom rail 1504B is configured to move freely up and down in channel 1895 while preventing curtain 1501A from moving laterally. In some embodiments, bottom rail 1504B is weighted to assist in operation of curtain 1501A. In particular, the weight of bottom rail 1504B can assist lowering of curtain 1501A by operation of gravity. The weight of bottom rail 1504B can also be configured to provide tension within fabric curtain 1501A.
One should appreciate that the present invention is not limited in its application to the details of construction and the arrangement of components set forth in the foregoing description or illustrated in the drawings. The invention is capable of other embodiments and of being practiced or of being carried out in various ways. Also, the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The use of “including,” “comprising,” or “having,” “containing”, “involving”, and variations thereof herein, is meant to encompass the items listed thereafter and equivalents thereof as well as additional items.
Having thus described several aspects of at least one embodiment of this invention, it is to be appreciated various alterations, modifications, and improvements will readily occur to those skilled in the art. Such alterations, modifications, and improvements are intended to be part of this disclosure, and are intended to be within the spirit and scope of the invention. Accordingly, the foregoing description and drawings are by way of example only.
This application is a continuation-in-part and claims priority under 35 U.S.C. §120 to U.S. patent application Ser. No. 13/469,496 entitled “RETRACTABLE CURTAIN PANEL WITH TRACK GUIDE,” filed on May 11, 2012 which claims priority under 35 U.S.C. §119(e) to U.S. Provisional Application Ser. No. 61/484,930 entitled “RETRACTABLE CURTAIN PANEL WITH TRACK GUIDE,” filed May 11, 2011, this application also claims priority under 35 U.S.C. §119(e) to U.S. Provisional Application Ser. No. 61/527,765 entitled “RETRACTABLE CURTAIN PANEL WITH TRACK GUIDE,” filed Aug. 26, 2011 and claims priority under 35 U.S.C. §119(e) to U.S. Provisional Application Ser. No. 61/587,788 entitled “RETRACTABLE CURTAIN PANEL WITH TRACK GUIDE,” filed Jan. 18, 2012 which applications are incorporated herein by reference in their entirety.
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