Window treatment hembar

Abstract

The present application relates to a window treatment hembar. A hembar can define a front portion and a back portion configured to slidably engage one another. When slidably engaged, the front portion and the back portion can define a slot configured to receive a piece of fabric. The front portion and the back portion can be configured to clamp the piece of fabric within the slot. The front portion and the back portion can be configured such that a width of the slot is adjustable. The front portion can define a first attachment surface, and the back portion can define a second attachment surface. The first attachment surface can define a rib. The second attachment surface can define a groove configured to receive the rib when the front portion and the back portion are slidably engaged such that the piece of fabric is clamped within the slot.

Description

[0001] This application is a divisional application of invention patent application 201810401586.0, filed on April 28, 2018, entitled "Window Covering Edge Strip". Technical Field

[0002] This application relates to window trim strips. Background Technology

[0003] Window coverings can be installed in front of one or more windows to, for example, prevent sunlight from entering the space and / or provide privacy. Window coverings can include, for example, roller blinds, Roman blinds, Venetian blinds, or valances. Roller blinds typically consist of flexible fabric wound around a long, thin roller. Such roller blinds may include a hembar at the lower end of the fabric. The hembar allows the fabric to hang in front of one or more windows over which the roller blind is mounted.

[0004] Typical hem strips can weigh down the lower end of the curtain fabric to limit wrinkling and facilitate smooth operation of the roller blind as the fabric is wound and unwound from the roller drum. Typical hem strips can be secured to the curtain fabric using one or more of a variety of attachment methods, including adhesives and pins.

[0005] Typical hem strips have a height greater than their depth. For example, the height of a typical hem strip can be determined so that the curtain fabric can be adequately secured while minimizing the depth to save on manufacturing and material costs. Summary of the Invention

[0006] As described herein, a window covering system may include a roller, a flexible material, and / or a rolled edge strip. The rolled edge strip may have a height and a depth, wherein the depth may be greater than the height. The flexible material may be a fabric sheet and may be attached to the roller in a wound manner. The flexible material may be operable between a raised position and a lowered position via rotation of the roller. The rolled edge strip may be configured to engage the lower end of the flexible material.

[0007] When the flexible material is in the raised position, the edge strip can be configured to fit into a space below the flexible material wound around the spool and above a bottom plane tangential to the bottom of the flexible material wound around the spool. The space in which the edge strip is stored when the flexible material is in the raised position can be further defined by a structure (e.g., a wall) to which the mounting bracket of the window covering system is installed. The front portion of the edge strip can be configured to be stored in a space defined by the flexible material on the spool, the bottom plane, and the rear plane of the flexible material extending above the edge strip when the flexible material is in the raised position. The edge strip can define a front portion having an upper surface with a sloping profile that allows the edge strip to fit into the space below the flexible material wound around the spool and above the bottom plane when the flexible material is in the raised position.

[0008] The hem strip may have a front wall defining a substantially vertical front surface. The hem strip may have a rear wall defining a substantially vertical rear surface. The front and rear walls may be horizontally spaced apart. The hem strip may have a bottom wall defining a substantially horizontal bottom surface. The hem strip may have a slot located between the front and rear walls. The slot may be configured to receive flexible material. The hem strip may be configured to hold flexible material within the slot. The slot may extend along the length of the hem strip. The slot may be located at a point (e.g., a midpoint) between the front and rear walls.

[0009] The crimp strip can be a single component. A single crimp strip can be configured to deform, allowing flexible material to be received and held within a slot. The crimp strip can define a vertical distance from the slot opening to the bottom wall. The horizontal distance can be greater than the vertical distance.

[0010] The crimping strip may include two or more components slidably attached to each other. A first component may include a front wall and a second component may include a rear wall. The crimping strip may include an elongated rubber strip within a channel defined by the first and second components. The rubber strip may be configured to apply force to the first and second components, causing the flexible material to be clamped within the slot. The crimping strip may define a center of gravity aligned with the slot.

[0011] A hemmed strip can define a front and a rear portion. The front and rear portions can be elongated along the longitudinal axis of the roll. The rear portion can be configured to slidably engage the front portion. When slidably engaged, the front and rear portions can define a slot configured to receive a piece of fabric. The front and rear portions can be configured to hold the fabric piece within the slot. The front and rear portions can be configured such that the width of the slot is adjustable. For example, the width of the slot can be continuously variable from a first width to a second width. The front portion can define a first attachment surface and the rear portion can define a second attachment surface. The first attachment surface can define a rib. The second attachment surface can define a groove configured to receive the rib when the front portion is slidably engaged with the rear portion. The rib and groove can be configured to hold the fabric piece within the slot.

[0012] The flexible material can be attached to the hem strip by fastening it to the first attachment surface on the rear portion. For example, double-sided tape (e.g., tape with adhesive on both sides) can be used to attach the flexible material to the first attachment surface. A tensile force can be applied to opposite ends of the rubber strip, causing the rubber strip to be stretched from a first length to a second length and from a first diameter to a second diameter. When the tensile force is applied to the rubber strip, the rubber strip can be inserted into a cavity defined by the rear portion. The rubber strip can be elongated along the hem strip and can have a first diameter. The front portion of the hem strip can slide from a first end to a second end of the rear portion to engage with the rear portion. The tensile force can be removed from opposite ends of the rubber strip, causing the rubber strip to expand within the cavity to a third diameter. The third diameter can be smaller than the first diameter and larger than the second diameter. Force can be applied to the front and rear portions of the rubber strip, causing the flexible material to be clamped within a slot.

[0013] As further described herein, the crimped strip for attaching to the end of the flexible material may have a body defining a recess configured to receive the end of the flexible material through a gap in the body, and a strip received within the recess and configured to clamp the flexible material against the inner surface of the recess. The body may define a planar vertical surface configured such that the flexible material can be arranged adjacent to the planar vertical surface after exiting the recess. The planar vertical surface may have an adhesive for attaching the flexible material to the planar vertical surface. The end of the flexible material may be wound and may be attached to the strip inside the recess.

[0014] The hem strip may include a first portion and a second portion. The second portion may be configured to slidably engage the first portion. The first and second portions may define a slot configured to receive a piece of fabric. The first and second portions may be configured such that the width of the slot is adjustable. For example, the width of the slot may be variable from a first width to a second width (e.g., continuously variable). The first and second portions may be configured to clamp the piece of fabric within the slot. The piece of fabric may be attached to the first or second portion within the slot, for example, using double-sided tape. The first portion may define a first attachment surface. The second portion may define a second attachment surface. The first attachment surface may be configured to press against the second attachment surface when the first portion is slidably engaged with the second portion. The hem strip may include a compressible member. The compressible member may be a hollow rubber strip. The compressible member may apply force to the first and second portions such that the piece of fabric is clamped between the first and second attachment surfaces.

[0015] A first attachment surface may define a rib. A second attachment surface may define a groove. The groove may be configured to receive the rib when the first portion slidably engages with the second portion. The rib and groove may be configured to clamp the fabric sheet within a slot. The first and second portions may be pushed together in response to the tightening of a fastener. For example, the first and second portions may be pulled together by one or more fasteners. The first portion may include a body. The second portion may include a clamping portion. The first portion may define a first flange and a first channel. The second portion may define a second flange and a second channel. The first flange may be received within the second channel and the second flange may be received within the first channel, such that alignment is maintained between the first and second portions. The first and second portions may be locked together by a plurality of snap fasteners.

[0016] The crimp strip may include a front wall, a rear wall, a bottom wall, and a slot. The front wall may define a substantially vertical front surface. The rear wall may define a substantially vertical rear surface. The front and rear walls may be horizontally spaced apart. The bottom wall may define a substantially horizontal bottom surface. The slot may be located between the front and rear walls. The crimp strip may define a center of gravity that can be aligned with the slot. For example, the weight of the crimp strip may be substantially uniformly distributed on either side of the slot. The slot may extend along the length of the crimp strip. The slot may be located at a point (e.g., a midpoint) between the front and rear walls. The slot may be configured to receive flexible material. The crimp strip may be configured to hold flexible material within the slot. The crimp strip may define a vertical distance from the opening of the slot to the bottom wall. The horizontal distance may be greater than the vertical distance. The depth of the crimp strip may be at least twice the height of the crimp strip.

[0017] The crimp strip may include two or more components slidably attached to each other. A first component of the two or more components may include a front wall. A second component of the two or more components may include a rear wall. The crimp strip may include a rubber strip. The rubber strip may be elongated within an opening defined by the first and second components. The rubber strip may be configured to apply force, for example, to the first and second components, such that a flexible material is clamped within a slot. The crimp strip may also include a single component. The crimp strip may be configured to deform such that a flexible material is received and clamped within a slot.

[0018] A window covering system may include a roller, a flexible material, and a bevel strip. The roller may have a longitudinal axis. The flexible material may be attached to the roller. The flexible material can be operated between a raised position and a lowered position via rotation of the roller. The bevel strip may be configured to engage the lower end of the flexible material. The bevel strip may have a height and a depth greater than that height. When the flexible material is in the raised position, the bevel strip may be configured to fit into a space below the flexible material wound around the roller and above a bottom plane tangential to the bottom of the flexible material wound around the roller.

[0019] The crimped strip may include a body having a front wall and a rear wall. The front wall may define a substantially vertical front surface. The rear wall may define a substantially vertical rear surface. The front and rear walls may be horizontally spaced apart. The body may have a bottom wall that may define a substantially horizontal bottom surface. The body may define a slot located between the front and rear walls. The slot may be configured to receive flexible material. The body of the crimped strip may define a vertical distance from the opening of the slot to the bottom wall. The horizontal distance may be greater than the vertical distance. The crimped strip may include a spline (e.g., a wedge-shaped spline) around which the end portion of the flexible material can be rolled. The spline may be configured to be received within the slot between the body of the crimped strip and the spline. The flexible material can exit the crimped strip through the slot. The spline may be caught in a recess formed in the body of the crimped strip. The flexible material can exit the crimped strip through the slot if the slot does not hold the flexible material. An internal component may catch the end portion of the flexible material. An internal component may be located in a recess formed in the body of the hem strip. The body of the hem strip may be configured to rotate about the internal component such that the body of the hem strip is suspended substantially horizontally in the radial direction. The body may be characterized by having a center of gravity aligned with a slot. The slot may be located at a point (e.g., midpoint) between the front and rear walls. The weight of the hem strip may be substantially uniformly distributed on either side of the slot. The depth of the hem strip may be at least twice the height of the hem strip. The hem strip may include a first component and a second component. The first component may include a front wall and the second component may include a rear wall. The first and second components may be slidably attached to each other. The hem strip may include a spline (e.g., a rubber spline) that can be elongated within the opening defined by the first and second components. The spline may be configured to apply force to the first and second components such that a flexible material is clamped within the slot. The hem strip may include a single component. The hem strip may be configured to deform such that a flexible material is received and clamped within the slot. A slot may be formed between a first surface and a second surface of the body. The flexible material may, for example, be planar along at least one of the first or second surfaces within the slot before exiting the body. A crease strip may be configured to hold the flexible material within the slot. The slot may be located between a front wall and a rear wall. When the flexible material is in the raised position, the space in which the crease strip is stored is further defined by a structure to which a mounting bracket of the window covering system is installed. When the flexible material is in the raised position, the front half of the crease strip may be configured to be stored within a space defined by the flexible material on the spool, the bottom plane, and the rear plane of the flexible material extending above the crease strip.The crimp strip can define a front portion having an upper surface with an inclined profile that allows the crimp strip to be fitted into the space below the flexible material wound around the reel and above the bottom plane when the flexible material is in the raised position.

[0020] The crimped strip may include a body having a first surface and a second surface that can define a slot. The slot can be configured to receive flexible material. The body may have a center of gravity aligned with the slot. The first surface may be a substantially vertical surface. When the flexible material is received in the slot, the flexible material may be arranged to be planar along the first surface before leaving the body. The body may have a front wall and a rear wall. The front wall may define a substantially vertical front surface. The rear wall may define a substantially vertical rear surface. The front wall and the rear wall may be horizontally spaced apart from each other. The body may have a bottom wall that can define a substantially horizontal bottom surface. The body may define a slot that may be located between the front wall and the rear wall. The slot may be configured to receive flexible material. The body of the crimped strip may define a vertical distance from the opening of the slot to the bottom wall. The horizontal distance may be greater than the vertical distance. The crimped strip may include a strip around which the end portion of the flexible material can be rolled. The strip may be configured to be received within a recess formed in the body of the crimped strip. The flexible material can exit the crimped strip through the slot. The strip can be configured to be received in a slot such that flexible material can be held within the slot between the body of the crimped strip and the strip. The strip may be characterized by having a wedge shape with a thin end and a thick end. The wedge shape of the strip may substantially correspond to the shape of the slot in the body. The slot can receive flexible material without holding it. The strip can be caught in a recess. The end portion of the flexible material can be attached to the outer surface of the strip. The slot may be located at a point (e.g., midpoint) between the front and rear walls. The depth of the crimped strip may be at least twice the height of the crimped strip. The crimped strip can be configured to hold flexible material within the slot. The body may include a first component including a front wall and a second component including a rear wall. The first and second components may be slidably attached to each other. The crimped strip may include a strip (e.g., a rubber strip) that can be elongated within an opening defined by the first and second components. The strip can be configured to apply force to the first and second components, causing the flexible material to be clamped within the slot. The body can include a single component. The body can be configured to deform, allowing the flexible material to be received and clamped within the slot. The weight of the crimped strip can be substantially uniformly distributed on either side of the slot.

[0021] The crimped strip may include a body having a front wall defining a substantially vertical front surface and a rear wall defining a substantially vertical rear surface. The front and rear walls may be horizontally spaced apart. The body may have a bottom wall defining a substantially horizontal bottom surface. The body may define a slot located between the front and rear walls. The slot may be configured to receive flexible material. The body of the crimped strip may define a vertical distance from the opening of the slot to the bottom wall. The horizontal distance may be greater than the vertical distance. The body may have a center of gravity aligned with the slot. The crimped strip may include a strip around which the end portion of the flexible material can be rolled. The strip may be located in a recess formed in the body of the crimped strip. The flexible material can exit the crimped strip through the slot. The strip may be configured to be received in the slot such that the body of the crimped strip and the strip clamp the flexible material in the slot. The strip may be characterized by having a wedge shape having a thin end and a thick end. The wedge shape of the strip may substantially correspond to the shape of the slot in the body. The slot can receive flexible material without clamping it. A strip can be caught in the recess. The end portion of the flexible material is attached to the outer surface of the strip. The crimped strip can be configured to clamp the flexible material within the slot. The body can include a first component including a front wall and a second component including a rear wall. The first and second components can be slidably attached to each other. The strip can be a rubber strip. The rubber strip can be elongated within the opening defined by the first and second components. The rubber strip can be configured to apply force to the first and second components such that the flexible material is clamped within the slot. The body can include a single component. The body can be configured to deform such that the flexible material is received and clamped within the slot. The crimped strip can include an internal member capable of capturing the end portion of the flexible material. The internal member can be located in a recess formed in the body of the crimped strip. The flexible material can exit the crimped strip through the slot. The body of the crimped strip can be configured to rotate about the internal member such that the body of the crimped strip can be suspended substantially horizontally in the radial direction. The end portion of the flexible material can be wound around a strip that can be located in a recess formed in the internal member. A slot can be located at a point (e.g., midpoint) between the front and rear walls. The weight of the rolled strip can be substantially uniformly divided on either side of the slot. The slot can be formed between a first surface and a second surface of the body. The flexible material can be planar along at least one of the first or second surfaces in the slot, for example, before leaving the body. The depth of the rolled strip can be at least twice the height of the rolled strip.

[0022] A crimped strip for attaching to an end portion of a flexible material may include a body and a strip. The body may define a recess configured to receive the end portion of the flexible material through a gap in the body. The strip may be received within the recess. The strip may be configured to clamp the flexible material against an inner surface of the recess. The body may include a planar vertical surface configured such that the flexible material is arranged adjacent to the planar vertical surface, for example, after exiting the recess. The body may have a vertical portion that can be connected to a horizontal portion to, for example, form an L-shaped structure. The body may include a front portion connected to the vertical portion to, for example, form the recess. A gap may be defined between the front portion and the horizontal portion. The recess may be vertically oriented in a vertical position. The recess may be horizontally oriented in a horizontal position. The body may have a front wall defining a substantially vertical front surface and a rear wall defining a substantially vertical rear surface. The front wall and the rear wall may be horizontally spaced apart from each other. The body may have a bottom wall defining a substantially horizontal bottom surface. A gap may be located between the front wall and the rear wall. The body of the rolled edge strip can define a vertical distance from the opening of the gap to the bottom wall. The horizontal distance can be greater than the vertical distance. The gap can be formed between a planar vertical surface and a second surface of the body. The flexible material can, for example, be planar along the planar vertical surface after leaving the recess and before leaving the body. The strip can include a wedge-shaped strip that can be configured to hold the flexible material against the inner surface of the recess. The flexible material can be rolled around the strip in the recess. The flexible material can be attached to the strip, for example, using an adhesive. The planar vertical surface can have an adhesive for attaching the flexible material to the planar vertical surface.

[0023] An apparatus may include a first portion, a second portion, and a compressible member. The second portion may be configured to slidably engage the first portion. The first and second portions may define a slot configured to receive a piece of fabric. The compressible member may apply force to the first and second portions to, for example, clamp the fabric piece within the slot. The first and second portions may be configured such that the width of the slot is adjustable. The first portion may define a first attachment surface. The second portion may define a second attachment surface. The first attachment surface may be configured to, for example, press against the second attachment surface when the first portion is slidably engaged with the second portion. The compressible member may be a hollow rubber strip. The first attachment surface may define a rib. The second attachment surface may define a groove configured to receive the rib when the first portion is slidably engaged with the second portion. The first portion may define a first flange and a first channel. The second portion may define a second flange and a second channel. The first flange may be received within the second channel and the second flange may be received within the first channel, such that alignment can be maintained between the first and second portions.

[0024] A method for attaching a flexible material to a crimp strip can be provided. The method may include providing an elongated crimp strip body having a front and a rear portion that can be configured to slidably engage with each other. The rear portion may define a first attachment surface. The front portion may define a second attachment surface. The front and rear portions may define a slot between the first and second attachment surfaces. The slot may be configured to receive flexible material. The rear portion may define a cavity. The method may include fastening the flexible material to the first attachment surface. The method may include, for example, applying a tensile force to opposite ends of a rubber strip such that the rubber strip decreases in diameter from a first diameter to a second diameter. The method may include, for example, inserting the rubber strip into the cavity while the tensile force is applied to the rubber strip. The rubber strip may be elongated along the elongated crimp strip body. The method may include, for example, sliding the front portion from a first end to a second end of the rear portion to form an engagement with the rear portion. The method may include removing the tensile force from opposite ends of the rubber strip such that the rubber strip expands within the cavity to a third diameter. The third diameter can be smaller than the first diameter and larger than the second diameter. Force can be applied to the front and rear portions of the rubber strip, causing the flexible material to be clamped within the slot. The method may include aligning the front and rear portions such that their respective ends are aligned. The flexible material can be secured to the first attachment surface, for example, using double-sided tape. The rear portion may define a groove along the first attachment surface. The front portion may define a rib along the second attachment surface. This rib can be configured, for example, to clamp the flexible material within the groove when a tensile force is removed from opposite ends of the rubber strip. The front portion may define a first flange and a first channel. The rear portion may define a second flange and a second channel. For example, when the front portion slides to engage with the rear portion, the first flange can be received within the second channel and the second flange can be received within the first channel.

[0025] A flexible material can be held between first and second portions of the device. The first and second portions can be slidably engaged with each other. The first portion can define a first attachment surface and the second portion can define a second attachment surface. The first and second portions can define a slot between the first and second attachment surfaces. The slot can be configured to receive the flexible material. The first portion can define a cavity. The flexible material can be fastened to the first attachment surface. A tensile force can be applied to opposite ends of a rubber strip such that the rubber strip can be stretched from a first length to a second length and the diameter of the rubber strip decreases from a first diameter to a second diameter. For example, when a tensile force is applied to the rubber strip, the rubber strip can be inserted into the cavity. The rubber strip can be elongated along an elongated crimped strip body. The second portion can be slidable from a first end of the first portion to a second end of the first portion to form an engagement with the first portion. The tensile force can be removed from opposite ends of the rubber strip such that the rubber strip can expand within the cavity to a third diameter. The third diameter can be smaller than the first diameter and larger than the second diameter. The rubber strip can apply force to the first and second parts, causing the flexible material to be clamped in the slot. Attached Figure Description

[0026] Figure 1 This is an example of a window display system.

[0027] Figure 2A yes Figure 1 The example shown is a side view of a window-mounted supplies system, where the flexible material is shown in the reverse roll-up orientation and in the raised position.

[0028] Figure 2B yes Figure 1 The example shown is a side view of a window-mounted supplies system, where the flexible material is shown in both the normal roll-up orientation and the raised position.

[0029] Figure 3 yes Figure 1 The example window shows an enlarged perspective view of the supplies system.

[0030] Figure 4A and 4B Depicting Figure 1 The example shown is a side view of an example rolled edge strip and flexible material for a window-mounted supplies system.

[0031] Figure 5A and 5B Depicting Figure 1 The side view of the example window dressing system shown is another example of a rolled edge strip and flexible material.

[0032] Figure 6A An example of a rolled edge strip assembly with two parts is depicted, wherein the rubber strip is stretched and the two parts are separated.

[0033] Figure 6B An example of a rolled edge strip assembly is depicted, wherein a rubber strip is stretched and the two parts are partially joined together.

[0034] Figure 6C An example of a rolled edge strip assembly is depicted, wherein a rubber strip is stretched and the two parts are fully joined.

[0035] Figure 7A and 7B Depict the side views of another example hem strip in both the unclamped and clamped states.

[0036] Figure 8 , 9 And 10 depicts more example side views of the rolled hem strips.

[0037] Figure 11 This is an enlarged perspective view of an example window covering system, showing another example of a rolled edge strip.

[0038] Figure 12A Depict a perspective view of another example of a rolled hem strip.

[0039] Figure 12B Depicting attachment parts and caps attached to the rolled edge strip. Figure 12A Perspective view of the rolled edge strip.

[0040] Figure 12C Depicting Figure 12B An exploded perspective view of the rolled edge strip shows the attachment parts and the cover being removed from the rolled edge strip.

[0041] Figure 13 and 14 Depict more example side views of the rolled hem strips. Detailed Implementation

[0042] Figure 1An example window dressing system 100 is depicted, comprising a roller 110 and a flexible material 120 wound around the roller 110. The window dressing system 100 includes one or more (e.g., two) mounting brackets 130 configured to be coupled to or otherwise mounted to a structure. For example, each mounting bracket 130 may be configured to be mounted to (e.g., attached to) a window frame, wall, or other structure such that the window dressing system 100 is mounted adjacent to (e.g., above or within) an opening such as a window. The roller 110 may be an elongated rotating element along a longitudinal direction L and rotatably mounted (e.g., rotatably supported) by the mounting brackets 130. The roller 110 may define a longitudinal axis 112. The longitudinal axis 112 may extend along the longitudinal direction L. The flexible material 120 can be attached to the reel 110 in a wound manner, such that rotation of the reel 110 causes the flexible material 120 to wind or unwind along a transverse direction T perpendicular to the longitudinal direction L. For example, rotation of the reel 110 can cause the flexible material 120 to be in a raised (e.g., open) position along the transverse direction T (e.g., as in...). Figure 2A and 3 (as shown) and lowered (e.g., closed) position (e.g., as in) Figure 1 The mounting bracket 130 can move between (as shown in the diagram). The mounting bracket 130 can move along the radial direction R (such as from...). Figure 1 The wall shown in the diagram) or extends from the structure in a transverse direction T (e.g., downward from the ceiling). The radial direction R can be defined as a direction perpendicular to the structure and the longitudinal axis 112.

[0043] The flexible material 120 may include a first end (e.g., top or upper end) coupled to the reel 110 and a second end (e.g., bottom or lower end) coupled to a hem strip 140 (e.g., bottom bar). For example, the hem strip 140 may be configured to engage the lower end of the flexible material 120. The hem strip 140 may be elongated along a longitudinal axis 112 (e.g., along the longitudinal direction L). The hem strip 140 may be configured, for example, to be weighted so that the flexible material 120 is suspended vertically. Rotation of the reel 110 may cause the hem strip 140 to move toward or away from the reel 110 between raised and lowered positions. End caps 150 may be disposed on each end of the hem strip 140. The end caps 150 may be configured to cover opposite ends of the hem strip 140. For example, the end caps 150 may provide a finished end to the hem strip 140.

[0044] Flexible material 120 can be any suitable material or any combination of forming materials. For example, flexible material 120 can be a "scrim," woven fabric, nonwoven material, light-control film, screen, and / or mesh fabric. Window covering system 100 can be any type of window covering. For example, window covering system 100 can be, as shown, a roller blind, soft curtain, drape, honeycomb blind, Roman blind, or Venetian blind. As shown, flexible material 120 can be a material suitable for use as a curtain fabric and can alternatively be referred to as a covering material. However, flexible material 120 is not limited to curtain fabric. For example, according to an alternative embodiment of window covering system 100 as a retractable projection screen, flexible material 120 can be a material suitable for displaying images projected onto the flexible material.

[0045] The window dressing system 100 can be electric or manual. An electric window dressing system may include a drive assembly, such as a motor drive unit (not shown). The drive assembly may be at least partially housed within the roller drum 110. For example, the drive assembly may include control circuitry, which may include a microprocessor and may be mounted on a printed circuit board. The drive assembly and / or control circuitry may be powered by a power source provided via wires (e.g., AC or DC power). The drive assembly may be operatively coupled to the roller drum 110 such that the roller drum 110 rotates when the drive assembly is actuated. The drive assembly may be configured to rotate the roller drum 110 of the example window dressing system 100, allowing the flexible material 120 to operate between a raised position and a lowered position.

[0046] Figure 2A yes Figure 1 The example window dressing system 100 is shown as a side view, with flexible material 120 shown in the reverse roll-up orientation and in the raised position. Flexible material 120 may have a thickness D1. The thickness D1 may vary based on the type of fabric or material selected as flexible material 120. A hem strip 140 may be configured to receive flexible material of various thicknesses D1. For example, hem strip 140 may be configured to deform such that flexible material 120 is received and held within hem strip 140. Flexible material 120 may be attached to a roll tube (e.g., such as...) in a wound manner. Figure 1 The shown reel 110) causes the flexible material 120 to be in a reverse roll-up orientation (e.g., as in...). Figure 2A (As shown) it is suspended from the front side of the reel.

[0047] The hem strip 140 can define a top wall 144 and a bottom wall 146. The bottom wall 146 can define a substantially horizontal bottom surface. The top wall 144 can be at a distance D2 from the bottom wall 146. The distance D2 can define the height of the hem strip 140. The top wall 144 and the bottom wall 146 can be parallel.

[0048] The rolled edge strip 140 may define a front wall 148 and a rear wall 149. The front wall 148 may define a substantially vertical front surface. The rear wall 149 may define a substantially vertical rear surface. The front wall 148 and rear wall 149 may be substantially perpendicular to the top wall 144 and the bottom wall 146. The front wall 148 and rear wall 149 may be parallel. The front wall 148 and rear wall 149 may extend a distance D3 from the bottom wall 146.

[0049] The front wall 148 can be separated from the rear wall 149 by a distance D4, which defines the depth of the hem strip 140. The depth of the hem strip 140 (e.g., distance D4) can be greater than its height (e.g., distance D2). For example, distance D4 can be twice or approximately twice the distance D2. Although not in Figure 2A As shown, however, distance D4 can be greater than twice the distance D2, or it can be less than twice the distance D2. Similarly, the depth of the crimp strip 140 (e.g., distance D4) can be less than the height of the crimp strip 140 (e.g., distance D2). The center of gravity of the crimp strip 140 can be located directly below the point 120A where the flexible material 120 contacts the crimp strip (e.g., as shown in...). Figure 2B As shown in the diagram, this allows the hem strip 140 to hang substantially horizontally along the radial direction R, even if the distance D4 may be twice or more than the distance D2.

[0050] The crimp strip 140 may define upper surfaces 142, 143 with an inclined profile. The inclined profile of the upper surfaces 142, 143 may be a single linear ramp, a curved ramp (e.g., a convex or concave curved ramp), a segmented ramp of multiple linear segments, or other suitable ramps and / or profiles. Additionally, the crimp strip 140 may have a side profile of another shape, such as a rectangle, triangle, or other suitable shape, wherein the depth of the crimp strip is greater than its height.

[0051] The hem strip 140 can be configured to clamp the bottom end of the flexible material 120, allowing the hem strip to hang substantially horizontally along its length in the longitudinal direction L. For example, the hem strip 140 can have two separate portions configured to be pressed together to clamp the flexible material 120 (e.g., as will be described in more detail below). Alternatively, the hem strip 140 can be a single component configured to clamp the flexible material 120 (e.g., a body having a single component). For example, the hem strip 140 can be metal having a single component with a slot (not shown) configured to receive the flexible material 120. After the flexible material 120 is inserted into the slot, the hem strip 140 (e.g., the integral metal hem strip) can deform, for a period when the hem strip 140 is clamped onto the flexible material 120.

[0052] Figure 2B yes Figure 1 The example shown is a side view of a window-mounted supplies system 100, where the flexible material 120 is shown in the fully raised position in the normal roll-up orientation. Figure 2B In the diagram, mounting bracket 130 and reel drum 110 are shown with dashed lines. Mounting bracket 130 can be mounted to a structure, such as a wall defining a first plane P2 extending along the transverse direction T and the longitudinal direction L (e.g., as in...). Figure 1 (As shown in the diagram). The flexible material 120 can be attached to the reel drum in a wound manner, such that the flexible material 120 is suspended from the rear side of the reel drum 110 during normal roll-up orientation (e.g., as shown in the diagram). Figure 2B (As shown in the diagram). The crimp strip 140 may define a front half 140A and a rear half 140B divided by a plane P3, which extends along the transverse direction T and the longitudinal direction L through the flexible material 120 suspended above the crimp strip 140. The front half 140A and the rear half 140B may have symmetrical profiles. The front half 140A and the rear half 140B may have different shapes and / or sizes and thus asymmetrical profiles. When the flexible material 120 is in the fully raised position, the bottom of the flexible material 120 wound onto the reel can define a bottom plane P4 extending along the radial direction R and the longitudinal direction L (e.g., tangential to the bottom of the flexible material wound onto the reel 110).

[0053] When the flexible material 120 is in the fully raised position, the crimp strip 140 can be configured to engage with the space 145 beneath the flexible material 120 that wraps around the roll 110 (e.g., as shown in the image). Figure 2B As shown, the hem strip 140 can be concealed and invisible (e.g., difficult to see and / or invisible when viewed from a distance in front of the window covering system 100). The space 145 where the hem strip 140 can be positioned can be defined at the bottom by plane P4, which is tangent to the bottom of the flexible material 120 wrapped around the roller cylinder 110 (e.g., in the fully raised position). The space 145 where the hem strip 140 can be positioned can also be defined at the rear by plane P2, which can be defined by the wall to which the mounting bracket 130 is mounted. Furthermore, the front half 140A of the hem strip 140 can be positioned below the flexible material 120 wrapped around the roller cylinder 110 and in the space defined at the bottom by plane P4 and at the rear by plane P3. The inclined profile of the upper front surface 142 helps the hem strip 140 fit into the space 145. When the flexible material 120 is in the fully raised position, the upper front surface 142 of the crimp strip 140 can abut against the flexible material 120. According to one example, the upper front surface 142 can be concave, wherein the curvature of the concave surface matches or substantially matches the convex surface of the roll cylinder 110 or the convex surface of the flexible material 120 when it is in the fully raised position. Figure 2AAs shown, a similar concept can be applied when the window covering system 100 is configured with a reverse roll-up orientation.

[0054] Figure 3 yes Figure 1 The enlarged view of the example window dressing system 100 shown here illustrates one of the end caps 150 of the rolled edge strip 140 in more detail. As previously mentioned, the end cap 150 can be configured to cover one end of the rolled edge strip 140. The end cap 150 can have, as... Figure 3 The outline of the shown crimp strip 140 is substantially similar to that of the crimp strip 140. The end cap 150 may have a different outline from that of the crimp strip 140. The end cap 150 may define inclined upper surfaces 152, 153, which have similar outlines to those shown. Figure 2A The upper surfaces 142 and 143 of the shown hemmed strip 140 have essentially the same inclined profile.

[0055] Figure 4A and Figure 4B A side view depicting a crimp strip 140 and flexible material 120 of a window dressing system 100 having a removable end cap 150 is shown. The crimp strip 140 may include a body comprising two or more components. These two or more components may be slidably attached to each other. The two or more components may include a front portion 160 (e.g., a first component) and a rear portion 170 (e.g., a second component), both of which may extend along the crimp strip 140 in the longitudinal direction L. The front portion 160 or the rear portion 170 may be positioned at the front of the window dressing system 100 (e.g., as shown in the image). Figure 1 As shown, in the radial direction R).

[0056] For example, the rear portion 170 can be configured to slidably engage the front portion 160. The front portion 160 and the rear portion 170 can define a slot 180 (e.g., a gap). The slot 180 can be formed between a first attachment surface 162 (e.g., a vertical surface) of the front portion 160 and a second attachment surface 172 (e.g., a vertical surface) of the rear portion 170. Figure 1 and Figure 3As shown, the slot 180 may extend, for example, longitudinally L, along the length of the crimp strip 140. The slot 180 may be positioned at a point (e.g., midpoint) between the front wall 148 and the rear wall 149 of the crimp strip 140. The front portion 160 may define the front wall 148. The rear portion 170 may define the rear wall 149. The slot 180 may be configured to receive a flexible material 120 (e.g., a piece of fabric). The front portion 160 and the rear portion 170 may be configured to clamp the flexible material 120 within the slot 180. When the front portion 160 is slidably engaged with the rear portion 170, the first attachment surface 162 may be configured to engage the second attachment surface 172. For example, the first attachment surface 162 and the second attachment surface 172 may be configured to apply opposing forces to each other. The flexible material 120 may be attached to the first attachment surface 162 or the second attachment surface 172 using an adhesive (e.g., double-sided tape). Figure 4A (As shown).

[0057] The front portion 160 may include one or more ribs or teeth, such as a rib 164 extending from the first attachment surface 162. For example, the first attachment surface 162 may define the rib 164. The rib 164 may be elongated along the crimp strip 140 in the longitudinal direction L. The rear portion 170 may include a recess 174 in the second attachment surface 172. For example, the second attachment surface 172 may define the recess 174. The recess 174 may be elongated along the crimp strip 140 in the longitudinal direction L. The rib 164 and the recess 174 may be aligned such that when the first attachment surface 162 engages the second attachment surface 172, the rib 164 is received within the recess 174. In other words, the recess 174 may receive the rib 164 when the front portion 160 is slidably engaged with the rear portion 170. The rib 164 and the recess 174 may be configured such that the flexible material 120 is held within the slot 180.

[0058] The crimped strip 140 may include a compressible member 190. The compressible member 190 may be a hollow rubber strip or some other type of compressible strip. The compressible member 190 may be elongated within an opening 182 defined by a front portion 160 and a rear portion 170. The compressible member 190 may be configured to apply force to the front portion 160 and the rear portion 170 to push the front portion 160 and the rear portion 170 together, such that the flexible material 120 is clamped within the slot 180. The compressible member 190 may be configured to apply force to a first inner surface 165 of the front portion 160 and a second inner surface 175 of the rear portion 170. Figure 4A As shown, when the compressible member 190 is stretched to the stretched position, the cross-sectional diameter of the compressible member 190 can be reduced, thereby separating the compressible member 190 from the first inner surface 165 and / or the second inner surface 175. Figure 4BAs shown, when expanded from the stretched position, the compressible member 190 can apply a force. For example, when expanded from the stretched position, the compressible member 190 can engage the first inner surface 165 and / or the second inner surface 175. The front portion 160 can be secured to the rear portion 170. For example, the force applied by the compressible member 190 can be configured to secure the front portion 160 to the rear portion 170.

[0059] The width of the slot 180 can be adjustable. For example, the width of the slot can vary from a first width (e.g., continuously) to a second width. (See reference...) Figure 4A The slot 180 is shown to have a width greater than Figure 4B The width is shown. The front portion 160 and the rear portion 170 can be configured such that the width of the slot 180 is adjustable. The hem strip 140 can define a center of gravity aligned with the slot 180. For example, the weight of the hem strip 140 can be substantially evenly distributed on either side of the slot 180. The front portion 160 can define a chamber 161 that is elongated along the hem strip 140. The dimensions of the chamber 161 can be set such that the center of gravity of the hem strip 140 is aligned with the slot 180. For example, the dimensions of the chamber 161 can be configured such that the weight of the hem strip 140 is balanced on either side of the slot 180. The balance between the front portion 160 and the rear portion 170 can be achieved in other ways, for example, by including one or more chambers and / or weights of either or both of the front portion 160 and the rear portion 170.

[0060] The front portion 160 may define a first flange 166 and a first channel 168. The rear portion 170 may define a second flange 178 and a second channel 176. The second channel 176 may be configured to receive the first flange 166. The first channel 168 may be configured to receive the second flange 178. The first flange 166 may be received within the second channel 176 and the second flange 178 may be received within the first channel 168, such that alignment is maintained between the front portion 160 and the rear portion 170. The first channel 168, the second channel 176, the first flange 166, and / or the second flange 178 may be configured such that the width of the slot 180 is adjustable. For example, the first channel 168, the second channel 176, the first flange 166, and / or the second flange 178 may be configured such that fabric sheets of various thicknesses may be received within the slot 180.

[0061] Front portion 160 and rear portion 170 may define a channel 173 that is elongated along the bottom wall 146 of the hem strip 140. Channel 173 may be configured such that a first flange 166 can be inserted into the second channel 176. Front portion 160 may define a cavity 163 that is elongated, for example, along the longitudinal direction L of the bottom wall 146 of the hem strip 140. The cavity 163 may be sized such that the center of gravity of the hem strip 140 is aligned with the slot 180. Cavity 163 may be configured to have a width in the radial direction R substantially similar to the width of channel 173, for example, so that the hem strip 140 has a balanced appearance when viewed from the bottom. Front portion 160 may be positioned on the inside of the electric window seat system 100 (e.g., on the side adjacent to the structure).

[0062] End cap 150 may cover the ends of front portion 160 and rear portion 170. End cap 150 may be configured to connect to front portion 160. For example, rear portion 170 may be configured to move (e.g., slide) relative to end cap 150 as compressible member 190 expands. Alternatively, front portion 160 and rear portion 170 may be pulled together (e.g., fixedly engaged) by one or more fasteners (not shown). One or more fasteners may include screws, rivets, and / or the like. Furthermore, front portion 160 and rear portion 170 may be locked together by one or more snaps (not shown).

[0063] For example, the front portion 160 and the rear portion 170 can be configured to clamp the flexible material 120 such that the flexible material 120 is flat at least within a distance D10 from the rib 164 to the top wall 144 before the flexible material leaves the crimp strip 140 (e.g., along the first attachment surface 162 and the second attachment surface 172 of the slot 180). For example, the flexible material 120 can define a planar segment defined by the distance D10 from the rib 164 to the top wall 144. The planar segment of the flexible material 120 along the distance D10 can be aligned with the center of gravity of the crimp strip 140 (e.g., vertically aligned). The planar segment of the flexible material 120 along the distance D10 allows the crimp strip to be suspended substantially horizontally in the radial direction R. For example, the flexible material 120 along the planar section at distance D10 and the flexible material 120 being held by the crimp strip 140 along distance D10 allow the mass of the crimp strip 140 to exert a downward force (e.g., tension) (e.g., vertically downward) on the flexible material 120 under the influence of gravity along the transverse T. In other words, this configuration of the flexible material 120 and the crimp strip 140 can help reduce the tendency of the flexible material 120 to curl at the attachment point to the crimp strip 140, which could cause the crimp strip 140 to not hang horizontally.

[0064] Figure 5A and Figure 5BA side view depicting another example of a crimp strip 240, attachable to a flexible material 120, for a window covering system 100 with a removable end cap 150. The crimp strip 240 may define a top wall 244 and a bottom wall 246. The bottom wall 246 may define a substantially horizontal bottom surface. The crimp strip 240 may define a front wall 248 and a rear wall 249. The front wall 248 may define a substantially vertical front surface. The rear wall 249 may define a substantially vertical rear surface. The front wall 248 and rear wall 249 may be substantially perpendicular to the bottom wall 246. The front wall 248 and rear wall 249 may be parallel. As... Figure 2A The depth of the hem strip 140 shown, and the depth of the hem strip 240, can be greater than the height of the hem strip 240 (e.g., twice or approximately twice). However, the depth and height can have different ratios, for example, including a situation where the depth of the hem strip 240 is less than the height of the hem strip 240.

[0065] The crimp strip 240 may include a body comprising two or more components. The two or more components may be slidably attached to each other. The two or more components may include a front portion 160 (e.g., a first component) and a rear portion 170 (e.g., a second component), which may be elongated along the longitudinal direction L of the crimp strip 240 (e.g., as shown in the image). Figure 1 (As shown). The front part 260 or the rear part 270 can be positioned in front of the window dressing system 100 (e.g., as shown). Figure 1 As shown, in the radial direction R).

[0066] For example, the rear portion 270 can be configured to slidably engage the front portion 260. The front portion 260 and the rear portion 270 can define a slot 280 (e.g., a gap). The slot 280 can extend, for example, longitudinally along the length of the hem strip 240. The slot 280 can be positioned at a point (e.g., a midpoint) between the front wall 248 and the rear wall 249 of the hem strip 240. The front portion 260 can define the front wall 248. The rear portion 270 can define the rear wall 249. The slot 280 can be configured to receive a flexible material 120 (e.g., a fabric sheet). The front portion 260 and the rear portion 270 can be configured to clamp the flexible material 120 within the slot 280.

[0067] The front portion 260 may define a first attachment surface 262, and the rear portion 270 may define a second attachment surface 272. When the front portion 260 is slidably engaged with the rear portion 270, the first attachment surface 262 may be configured to engage the second attachment surface 272. For example, the first attachment surface 262 and the second attachment surface 272 may be configured to apply opposing forces to each other. The flexible material 120 may be attached to either the first attachment surface 262 or the second attachment surface 272 using an adhesive (e.g., double-sided tape). Figure 5A (As shown).

[0068] The front portion 260 may include a rib 264 extending from the first attachment surface 262. For example, the first attachment surface 262 may define the rib 264. The rib 264 may be elongated along the crimp strip 240 in the longitudinal direction L. The rear portion 270 may include a recess 274 in the second attachment surface 272. For example, the second attachment surface 272 may define the recess 274. The recess 274 may be elongated along the crimp strip 240 in the longitudinal direction L. The rib 264 and the recess 274 may be aligned such that when the first attachment surface 262 engages the second attachment surface 272, the rib 264 is received within the recess 274. In other words, the recess 274 may receive the rib 264 when the front portion 260 is slidably engaged with the rear portion 270. The rib 264 and the recess 274 may be configured such that the flexible material 120 is held within the slot 280.

[0069] The crimped strip 240 may include a compressible member 290. The compressible member 290 may be a hollow rubber strip or some other type of compressible strip. The compressible member 290 may be elongated within the opening 282 defined by the front portion 260 and the rear portion 270. The compressible member 290 may be configured to apply force to the front portion 260 and the rear portion 270 to push the front portion 260 and the rear portion 270 together, such that the flexible material 120 is clamped within the slot 280. The compressible member 290 may be configured to apply force to a first inner surface 265 of the front portion 260 and a second inner surface 275 of the rear portion 270. Figure 5A As shown, when the compressible member 290 is stretched to the stretched position, the cross-sectional diameter of the compressible member 290 can be reduced, thereby separating the compressible member 290 from the first inner surface 265 and / or the second inner surface 275. Figure 5B As shown, when expanded from the stretched position, the compressible member 290 can apply a force. For example, when expanded from the stretched position, the compressible member 290 can engage the first inner surface 265 and / or the second inner surface 275. The front portion 260 can be secured to the rear portion 270. For example, the force applied by the compressible member 290 can be configured to secure the front portion 260 to the rear portion 270.

[0070] The width of slot 280 can be adjustable. For example, the width of the slot can vary from a first width (e.g., continuously) to a second width. (See reference...) Figure 5A The slot 280 is shown to have a width greater than Figure 5BThe width is shown. The front portion 260 and the rear portion 270 can be configured such that the width of the slot 280 is adjustable. The hem strip 240 can define a center of gravity aligned with the slot 280. For example, the weight of the hem strip 240 can be substantially evenly distributed on either side of the slot 280. The front portion 260 can define a chamber 261 that is elongated along the hem strip 240. The dimensions of the chamber 261 can be set such that the center of gravity of the hem strip 240 is aligned with the slot 280. For example, the dimensions of the chamber 261 can be configured such that the weight of the hem strip 240 is balanced on either side of the slot 280.

[0071] The front portion 260 may define a first flange 266 and a first channel 268. The rear portion 270 may define a second flange 278 and a second channel 276. The second channel 276 may be configured to receive the first flange 266. The first channel 268 may be configured to receive the second flange 278. The first flange 266 may be received within the second channel 276 and the second flange 278 may be received within the first channel 268, such that alignment is maintained between the front portion 260 and the rear portion 270. The first channel 268, the second channel 276, the first flange 266, and / or the second flange 278 may be configured such that the width of the slot 280 is adjustable. For example, the first channel 268, the second channel 276, the first flange 266, and / or the second flange 278 may be configured such that fabric sheets of various thicknesses may be received within the slot 280. In one aspect, the configuration of the first flange 166 and the first channel 168, as well as the second flange 178 and the second channel 176 of the crimp strip 140, may differ from that of the first flange 266 and the first channel 268, as well as the second flange 278 and the second channel 276 of the crimp strip 240.

[0072] Front portion 260 and rear portion 270 may define a channel 273 that is elongated along the bottom wall 246 of the hem strip 240. Channel 273 may be configured such that a first flange 266 can be inserted into the second channel 276. Front portion 260 may define a cavity 263 that is elongated, for example, along the longitudinal direction L of the bottom wall 246 of the hem strip 240. The cavity 263 may be sized such that the center of gravity of the hem strip 240 is aligned with the slot 280. Cavity 263 may be configured to have a width in the radial direction R substantially similar to the width of channel 173, so that the hem strip 240 has a balanced appearance when viewed from the bottom. Front portion 260 may be positioned on the inside of the motorized window covering system 100 (e.g., on the side adjacent to the structure).

[0073] End cap 150 may cover the ends of front portion 160 and rear portion 170. End cap 150 may be configured to be attached to front portion 160. For example, rear portion 170 may be configured to move (e.g., slide) relative to end cap 150 as compressible member 190 expands.

[0074] For example, the front portion 260 and the rear portion 270 can be configured to clamp the flexible material 120 such that, at least with respect to the distance D5 from the rib 264 to the top wall 244, the flexible material is flat before it leaves the crimp strip 240. The planar segment of the flexible material 120 along distance D5 can be aligned with the center of gravity of the crimp strip 240. This planar segment of the flexible material 120 along distance D5 allows the crimp strip 240 to hang substantially horizontally in the radial direction R. For example, the planar segment of the flexible material 120 along distance D5 and the clamping of the flexible material 120 by the crimp strip along distance D5 allow the mass of the crimp strip to exert a downward force (e.g., tension) (e.g., vertically downward) on the flexible material 120 under gravity along the transverse direction T. In other words, this configuration of the flexible material 120 and the crimp strip 240 can help reduce the tendency of the flexible material 120 to curl at the attachment point to the crimp strip 240, preventing the crimp strip from hanging horizontally.

[0075] Alternatively, the front portion 260 and the rear portion 270 can be pulled together (e.g., fixedly joined) by one or more fasteners (not shown). The one or more fasteners may include screws, rivets, and / or the like. Furthermore, the front portion and the rear portion 270 can be locked together by one or more clips (not shown).

[0076] Figures 6A to 6C An example assembly of a crimped strip 340 is depicted, having a front portion 360, a rear portion 370, and a compressible member such as a rubber strip 390. The crimped strip 340 can be configured as follows: Figures 1 to 3 , Figure 4A and Figure 4B The shown edge strip 140 or Figure 5A and Figure 5B The shown is a rolled edge strip 240. Flexible materials (e.g., such as...) Figures 1 to 3 , Figure 4A , Figure 4B , Figure 5A and Figure 5B The flexible material 120 shown can be attached to the crimp strip 340. The crimp strip 340 can be an elongated body along the longitudinal direction L. The front portion 360 can be configured as follows: Figure 4A and Figure 4B The front portion 160 shown Figure 5A and Figure 5B The front portion 260 shown, or a similarly configured portion with a different curved profile. The rear portion 370 can be configured as follows: Figure 4A and Figure 4B The rear part 170 shown Figure 5A and Figure 5B The rear portion 270 shown, or a similarly configured portion with a different curved profile. The front portion 360 and the rear portion 370 can be configured to slidably engage with each other. The crimped strip 340 can define a cavity between the first inner surface 365 of the front portion 360 and the second inner surface 375 of the rear portion 370 (e.g., such as...). Figure 4A and Figure 4B The opening 182 shown or Figure 5A and Figure 5B (Opening 282 shown). The front portion 360 may define the first end 364 and the second end 366. The rear portion 370 may define the first end 374 and the second end 376.

[0077] The front 360 may define a first attachment surface (not shown), such as Figure 4A and Figure 4B The first attachment surface 162 shown or Figure 5A and Figure 5B The first attachment surface 262 is shown. The rear portion 370 may define a second attachment surface (not shown), such as... Figure 4A and Figure 4B The second attachment surface 172 shown or Figure 5A and Figure 5B The second attachment surface 272 is shown. The front portion 360 and the rear portion 370 define a slot (e.g., such as...) between the first attachment surface and the second attachment surface. Figure 4A and Figure 4B The slot 180 shown or Figure 5A and Figure 5B The slot 280 shown is configured to receive flexible material. The flexible material can be secured to a second attachment surface. This is achieved by using an adhesive, such as double-sided tape. For example, double-sided tape can be applied to the second attachment surface. The flexible material can be pressed against the double-sided tape, thereby securing it to the second attachment surface.

[0078] The rubber strip 390 can be elongated along the crimped strip 340. When the rubber strip 390 is in a relaxed (e.g., unstretched) position, it can have a first diameter. The rubber strip 390 can be stretched initially. Tension can be applied to opposite ends of the rubber strip 390, causing the rubber strip 390 to stretch from a first length to a second length, and the diameter of the rubber strip 390 to decrease to a second diameter. After the rubber strip 390 is stretched, as... Figure 6AAs shown, the front portion 360 and the rear portion 370 can be positioned adjacent to the rubber strip such that the front and rear portions do not overlap. The front portion 360 can be positioned such that its first inner surface 365 is adjacent to the rubber strip 390, and the rear portion 370 can be positioned such that its second inner surface 375 is adjacent to the rubber strip 390. The rear portion 370 can be aligned with the front portion 360 such that their respective ends are aligned.

[0079] like Figure 6B As shown, the front portion 360 can slide in direction 310 to engage with the rear portion 370. Direction 310 can be in the longitudinal direction L. Because the rear portion is attached to a flexible material, the front portion 360 can slide relative to the rear portion 370. For example, the front portion 360 can slide in direction 310 from a first end 374 to a second end 376 to engage with the rear portion 370. Figure 6C As shown, the front portion 360 can slide in direction 310 until the first end 364 of the front portion 360 is substantially aligned with the first end 374 of the rear portion 370, and the second end 366 of the front portion 360 is substantially aligned with the second end 376 of the rear portion 370. As the front portion 360 engages with the rear portion 370 in direction 310, the rubber strip 390 is captured in the cavity formed between the first inner surface 365 of the front portion and the second inner surface 375 of the rear portion.

[0080] Reference Figure 6C When the front portion 360 and the rear portion 370 are fully engaged, tension can be relieved from opposite ends of the rubber strip 390, causing the rubber strip 390 to expand within the cavity to a third diameter. The third diameter can be smaller than the first diameter and larger than the second diameter. The third diameter can vary based on the thickness of the flexible material. The rubber strip 390 can apply force to the first inner surface 365 of the front portion 360 and the second inner surface 375 of the rear portion 370, causing the flexible material to be clamped within the slot. The rear portion 370 can define a groove along the second attachment surface (e.g., such as...). Figure 4A and Figure 4B The groove 174 shown or Figure 5A and Figure 5B The groove 274 shown). The front 360 may define a rib (e.g., such as...). Figure 4A and Figure 4B Rib 164 shown or Figure 5A and Figure 5B (Rib 264 shown). When tension is relieved from opposite ends of the rubber strip 390, the rib can be configured to hold the flexible material within the groove.

[0081] The front 360 may define the first flange (e.g., such as...) Figure 4A and Figure 4B The first flange 166 shown or Figure 5A and Figure 5BThe first flange 266 shown) and the first channel (e.g., such as Figure 4A and Figure 4B The first channel 168 shown Figure 5A and Figure 5B The first channel 268 shown). The rear portion 370 may define a second flange (e.g., such as...). Figure 4A and Figure 4B The second flange 178 shown is or Figure 5A and Figure 5B The second flange 278 shown) and the second channel (e.g., Figure 4A and Figure 4B The second channel 176 shown Figure 5A and Figure 5B (The second channel 276 shown). When the front portion 360 slides in the direction 310 into engagement with the rear portion 370, the first flange can be received in the second channel and the second flange can be received in the first channel.

[0082] For example, when the front part 360 engages with the rear part 370 and the rubber strip 390 is in the slot, end caps can be added to each end of the crimped strip 340.

[0083] Figure 7A and Figure 7B A side view is depicted of another example of a crimp strip 440 for a window dressing system (e.g., window dressing system 100), which can be attached to flexible material 120, for example, with the end cap of the crimp strip 440 removed. The crimp strip 440 may include a body 460 having a recess 462 and a clamping portion 470 having a wedge 472. The clamping portion 470 may be configured to slide over the recess 462 of the body 460. A first surface 464 of the body 460 and a second surface 474 of the clamping portion 470 may define a slot 480 (e.g., a gap). The slot 480 may extend, for example, longitudinally L, along the length of the crimp strip 440. The slot 480 may be configured to receive flexible material 120 (e.g., a piece of fabric). The flexible material 120 may be wrapped around the wedge 472 of the clamping portion 470 and may be attached to the bottom attachment surface 476 of the clamping portion 470, for example, using an adhesive (e.g., double-sided tape).

[0084] The body 460 and the clamping part 470 can be configured to clamp the flexible material 120 within the slot 480. The width of the slot 480 can be adjustable. For example, the width of the slot can vary from a first width (e.g., continuously) to a second width. (See reference...) Figure 7A The slot 480 is shown to have a width greater than Figure 7B The width shown. The body 460 and the clamping part 470 can be configured such that the width of the slot 480 is adjustable.

[0085] The crimp strip 440 may include a screw 490, which can be fastened to clamp the flexible material 120 within the crimp strip 440. When the screw 490 is loosened, as... Figure 5A As shown, slot 480 can be made wider. When screw 490 is tightened, as... Figure 5B As shown, screw 490 can push clamping portion 470 against inner wall 466 of recess 462 until flexible material 120 is clamped between wedge 472 and inner wall 466 of recess 462. Flexible material 120 can also be clamped between first surface 464 of body 460 and second surface 474 of clamping portion 470. Clamping portion 470 can define flange 478, which can be received in channel 468 of body 460, for example, to maintain alignment between body 460 and clamping portion 470.

[0086] Before the flexible material 120 leaves the crimp strip 440, at least with respect to distance D6, the flexible material 120 can be flat within the slot 480. For example, the flexible material 120 can define a planar segment defined by a portion of the flexible material 120 within the slot 480. The planar segment of the flexible material 120 along distance D6 can be aligned with the center of gravity of the crimp strip 440. As described herein, the planar segment of the flexible material 120 allows the crimp strip to be suspended substantially horizontally in the radial direction R.

[0087] Figure 8 The following is a side view depicting another example of a crease strip 540 for a window dressing system (e.g., window dressing system 100) that can be attached to flexible material 120, for example, with the end caps of the crease strip removed. The crease strip 540 may include a body 560 having a recess 562 and a strip 570 that can be positioned within the recess 562. The recess 562 may define an inner surface, for example, a vertical surface 564 and an inclined surface 566. The strip 570 may be wedge-shaped. The vertical surface 564 and the inclined surface 566 may define a slot 580 (e.g., a gap) in the body 560. The slot 580 may extend, for example, longitudinally L, along the length of the crease strip 540. The slot 580 may be configured to receive flexible material 120 (e.g., a piece of fabric). The flexible material 120 (e.g., an end of the flexible material) may wrap around the strip 570 and may be attached to the outer surface of the strip 570, for example, by using an adhesive.

[0088] The strip 570 may define a thin end 572 (e.g., upper end) and a thick end 574 (e.g., lower end). For example, the thin end 572 may be characterized by a smaller radius compared to the thick end 574. The strip 570 may be configured to be received in a slot 580 in the body 560. The slot 580 may be characterized by substantially corresponding to (e.g., matching) the shape of the strip 570. When the strip 570 is received in the slot 580, for example, due to gravity on the body 560 of the crimped strip 540, the body 560 and the strip 570 may be configured to clamp the flexible material 120 within the slot 580. The body 560 and the strip 570 may accommodate various widths of the flexible material 120.

[0089] Before the flexible material leaves the crimp strip 540, at least with respect to distance D7, the surfaces of the flexible material 120 along the strip 570 and the body 560 can be flat. For example, the flexible material 120 can define a planar segment defined by a portion of the flexible material 120 within the slot 580. The planar segment of the flexible material 120 along distance D7 can be aligned with the center of gravity of the crimp strip 540. As described herein, the planar segment of the flexible material 120 allows the crimp strip 540 to be suspended substantially horizontally in the radial direction R.

[0090] Figure 9 The illustration depicts a side view of another example of a crimp strip 640, which can be attached to a flexible material 120, for example, with the end caps of the crimp strip 640 removed. The crimp strip 640 may include a body 660 defining a recess 662 and a strip 670 received in the recess 662. The body 660 may define a slot 680 (e.g., a gap) having a first surface 682 and a second surface 684. The slot 680 may extend from the outside of the crimp strip 640 to the recess 662. The slot 680 may extend, for example, longitudinally along the length of the crimp strip 640.

[0091] Without clamping the flexible material within the slot, the slot 680 can be configured to receive the flexible material 120 (e.g., a piece of fabric). The flexible material 120 can be wrapped around the strip 670 and can be attached to the bottom surface 672 of the strip, for example, using an adhesive (e.g., double-sided tape). The strip 670 can be captured (e.g., snapped) into the recess 662. The flexible material 120 can exit the crimp strip 640 through the slot 680. The strip 670 can be configured to clamp the flexible material 120 against the inner surface 664 of the recess 662. The first surface 682 can define a flat, vertical surface. After the flexible material 120 exits the recess 662 and before it exits the crimp strip 640, at least with respect to distance D8, the flexible material 120 can be flat along the first surface 682 of the slot 680. For example, the flexible material 120 can define a planar segment defined by a portion of the flexible material 120 within the slot 680. The planar section of the flexible material 120 along distance D8 can be aligned with the center of gravity of the hem strip 640. The planar section of the flexible material 120 allows the hem strip 640 to be suspended substantially horizontally in the radial direction R.

[0092] Figure 10 A side sectional view depicting another example of a rolled edge strip 740 that can be attached to a flexible material 120, representing a window covering system (e.g., window covering system 100). The rolled edge strip 740 may include a body 760 defining a recess 762, such as... Figure 10 As shown, the recess 762 may have a circular cross-section. The crimped strip 740 may include an internal member 770 that can be received in the recess 762. The internal member 770 may extend, for example, along the length of the crimped strip 740 in the longitudinal direction L. Figure 10 As shown, the inner member 770 may define an elliptical cross-section. The inner member 770 may include a recess 772 and a strip 774 received within the recess 772. The body 760 may define a slot 780 (e.g., a gap) extending from the outside of the crimped strip 740 to the recess 762. The inner member 770 may define a slot 782 (e.g., a gap) extending from the outside of the inner member 770 to the recess 772. The slots 780, 782 of each of the body 760 and the inner member 770 may extend longitudinally L along the length of the crimped strip 740.

[0093] Flexible material 120 can be wound around strip 774 within recess 772 of inner member 770 and can be attached to bottom surface 776 of strip 774, for example, using an adhesive (e.g., double-sided tape). Strip 774 can be captured (e.g., trapped) within recess 772 of inner member 770. Flexible material 120 can exit crimp strip 740 through slot 782 of inner member 770 and slot 780 of body 760 (e.g., without clamping the flexible material). Inner member 770 can be rotatably captured within recess 762 of body 760. For example, due to the force exerted on body 760 by gravity, inner member 770 can remain in the upper part of recess 762. For example, as Figure 10 As shown, the bottom of the inner member 770 can be a distance D9 from the bottom of the recess. For example, when the diameter of the recess 762 is approximately 0.625 inches, the distance D9 can range from approximately 0.131 inches to 0.191 inches. The weight of the body 760 can be substantially evenly distributed on either side of the slot 780, and the body 760 can define a center of gravity aligned with the slot 780. When the weight of the body 760 is balanced on either side of the slot 780, the body 760 can be configured to rotate about the inner member 770, for example, to allow the body to be suspended substantially horizontally in the radial direction R.

[0094] Although the hem strips 140, 240, 540, 640, and 740 shown and described herein have upper surfaces with inclined profiles and vertical front and rear walls, the hem strips may have side profiles of different shapes. For example, the hem strips 140, 240, 540, 640, and 740 may not include one or more of the surfaces shown (e.g., top wall, bottom wall, front wall, rear wall, and / or upper surface). The side profile of the hem strip may be rectangular (e.g., as shown in the image). Figure 11 The hem strips 140, 140', 240, 540, 640, and 740 can be triangular, circular, oval, or other suitable shapes. The surfaces of the hem strips 140, 140', 240, 540, 640, and 740 (e.g., top wall, bottom wall, front wall, back wall, and / or upper surface) can be linear, curved (e.g., convex or concave), or of another shape. Furthermore, the surfaces of the hem strips 140, 140, 140', 240, 540, 640, and 740 can be characterized by various colors, finishes, designs, patterns, etc.

[0095] Figure 12A A perspective view depicting another example of a rolled edge strip 840 of a window covering system 100, which can be attached to a flexible material 120. (See image below.) Figure 12AAs shown, the crimping strip 840 may include a body 860 having a vertical portion 862 connected to a horizontal portion 864 to form an L-shaped profile. The body 860 may include a vertically arranged front portion 866. The front portion 866 may be connected to the vertical portion 862 to form a recess 868. The body 860 may define a gap 870 (e.g., a slot) between the front portion 866 and the horizontal portion 864. Flexible material 120 may be attached to the front surface (e.g., a flat vertical surface) of the front portion 866 of the body 860, for example, using an adhesive (e.g., double-sided tape). One end of the flexible material 120 may extend into the recess 868 of the body 860. The crimping strip 840 may include a strip (not shown) that may be received within the recess 868 of the body 860. The strip may be configured to retain the end of the flexible material 120 within the recess 868. For example, the strip can abut against the inner surface 869 of the recess 868 to hold the flexible material 120.

[0096] Figure 12B A perspective view of a rolled edge strip 840 is depicted, having an attachment member 880 and a cover 890 (e.g., a decorative panel) attached to the rolled edge strip 840. Figure 12C An exploded perspective view depicting the crimped strip 840 shows the attachment member 880 and the cover 890 separate from the crimped strip 840. The attachment member 880 may include a notch 882 configured to receive a horizontal portion 864 of the body 860. The attachment member 880 may include a protrusion 884 configured to be received in a gap 870 of the body 860, for example, to attach the attachment member 880 to the body 860. Figure 12B As shown, the cover 890 can be snapped onto the top of the attachment member 880.

[0097] Before the flexible material leaves the hem strip 840, the flexible material 120 may be flat along the front portion 866 of the body 860. For example, the flexible material 120 may define a planar section defined by a portion of the flexible material 120 along the front portion 866. The planar section of the flexible material 120 allows the hem strip 840 to hang substantially horizontally in the radial direction R.

[0098] Figure 13A side view depicting another example of a crimp strip 940 that can be attached to flexible material 120 in a window dressing system (e.g., window dressing system 100). The crimp strip 940 may include a body 960 having a vertical portion 962 connected to a horizontal portion 964 to form an L-shaped profile. The horizontal portion 964 may define a leading edge 965 that can be positioned on the inside of the window dressing system 100. The body 960 may define a gap 970 (e.g., a slot) between a front surface 966 (e.g., a planar vertical surface) of the vertical portion 962 and the horizontal portion 964. The body 960 may define a recess 968 (e.g., a vertically oriented recess in the vertical portion 962) that provides passage thereto through the gap 970. The crimp strip 940 may include a strip 980 received in the recess 968. For example, flexible material 120 may be attached to the front surface 966 of the vertical portion 962 using an adhesive (e.g., double-sided tape). The end of the flexible material 120 may wrap around the strip 980 in the recess 968 and may be attached to the strip 980 (e.g., using an adhesive). The strip 980 may abut against the inner surface 969 of the recess 968 to hold the flexible material 120.

[0099] The flexible material 120 can be flat along the front surface 966 of the vertical portion 962, which allows the hem strip 940 to be suspended substantially horizontally in the radial direction R.

[0100] Figure 14 A side view depicting another example of a crimp strip 1040 that can be attached to a flexible material 120 for a window dressing system (e.g., window dressing system 100). The crimp strip 1040 may include a body 1060 having a vertical portion 1062 connected to a horizontal portion 1064 to form an L-shaped profile. The horizontal portion 1064 may define a leading edge 1065 that can be positioned on the inside of an electric window dressing system. The body 1060 may define a gap 1070 (e.g., a slot) between the front surface 1066 (e.g., a planar vertical portion) of the vertical portion 1062 and the horizontal portion 1064. The body 1060 may define a recess 1068 (e.g., a horizontally oriented recess in the horizontal portion 1064) that provides passage through the gap 1070 to it. The crimp strip 1040 may include a strip 1080 received in the recess 1068. For example, the flexible material 120 can be attached to the front surface 1066 of the vertical portion 1062 using an adhesive (e.g., double-sided tape). The ends of the flexible material 120 can wrap around a strip 1080 in the recess 1068 and can be attached to the strip 1080 (e.g., using an adhesive). The strip 1080 can abut against the inner surface 1069 of the recess 1068 to hold the flexible material 120.

[0101] The flexible material 120 may be flat along the front surface 1066 of the vertical portion 1062, which, for example, allows the hem strip 1040 to be suspended substantially horizontally in the radial direction R.

[0102] Although the rolled edges shown and described herein are in relation to window covering systems, these rolled edges can be applied to any hanging material (e.g., whether or not it is retractable), such as materials that cover openings such as doors, projection screens, or art tapestries that can be hung on the wall.

[0103] While this disclosure has been described with reference to certain embodiments and generally associated methods, variations and substitutions of these embodiments and methods will be apparent to those skilled in the art. Therefore, the foregoing description of exemplary embodiments does not limit this disclosure. Other changes, substitutions, and modifications are possible without departing from the spirit and scope of this disclosure.

Claims

1. A window covering system, comprising: Scroll cylinder; A flexible material attached to a reel drum, which can be manipulated between a raised position and a lower position by the rotation of the reel drum; and Hemmed strips, including: The front wall defines a generally vertical front surface; The rear wall defines a generally vertical rear surface, while the front and rear walls are separated from each other by a horizontal distance. The bottom wall defines a roughly horizontal bottom surface; A slot located between the front and rear walls, the slot including a vertical surface and an inclined surface, the slot being configured to receive flexible material; A strip-shaped body enclosed within the internal cavity of a rolled edge strip, the strip-shaped body being configured to clamp the flexible material onto a vertical surface and an inclined surface of a clamping slot, wherein the strip-shaped body is wedge-shaped, comprising an upper thin end and a lower thick end, the upper thin end having a smaller radius than the lower thick end; The flexible material is wound around the strip to define a flat planar section along the inner surface of the edge strip before the flexible material leaves the edge strip. The planar section of the flexible material in the slot is aligned with the center of gravity of the edge strip so that the edge strip is suspended approximately horizontally.

2. The window covering system according to claim 1, wherein, Flexible material is attached to the strip.

3. The window covering system according to claim 1, wherein, The slot defines a shape that roughly corresponds to a wedge-shaped strip.

4. The window covering system according to claim 1, wherein, The strip is configured to hold the flexible material within the slot by the gravity of the rolled edge strip.

5. The window covering system according to claim 1, wherein, The internal cavity extends longitudinally along the length of the rolled edge strip, defined by the front wall, rear wall, or bottom wall.

6. A rolled edge strip, comprising: The body defines a first slot, which is configured to receive flexible material; A recess extending along the length of the body, the recess comprising a circular cross-section; An internal component, received within a recess, the internal component having an elliptical cross-section and extending along the length of the body, the internal component defining a second slot configured to extend from a first slot into a cavity within the internal component; as well as A strip-shaped body is received within the cavity of the internal component, wherein a flexible material is wound around the strip-shaped body while it is within the cavity of the internal component. The internal component is rotatably captured in the recess, so that the internal component remains in the upper part of the recess.

7. The rolled edge strip according to claim 6, wherein, The center of gravity, defined by the main body, is aligned with the first slot.

8. The rolled edge strip according to claim 7, wherein, The body is configured to rotate around the internal components so that the body is suspended approximately horizontally.

9. The rolled edge strip according to claim 6, wherein, The flexible material extends through the second slot.

10. The rolled edge strip according to claim 6, wherein, Flexible material is attached to the strip.

11. A method for clamping a flexible material between a first portion and a second portion of a device, the method comprising: The first portion and the second portion are slidably joined to each other, wherein the first portion defines a first attachment surface, the second portion defines a second attachment surface, the first portion and the second portion define a slot between the first attachment surface and the second attachment surface, the slot being configured to receive flexible material, and the first portion defines a cavity. Secure the flexible material to the first attachment surface; Tensile force is applied to the opposite ends of the rubber strip, causing the rubber strip to stretch from a first length to a second length and the diameter of the rubber strip to decrease from a first diameter to a second diameter; While applying tensile force to the rubber strip, the rubber strip is inserted into the cavity, wherein the rubber strip is elongated along the slender rolled edge body; Slide the second part from the first end of the first part to the second end of the first part until it engages with the first part; and The tensile force is removed from the opposite ends of the rubber strip, causing the rubber strip to expand within the cavity to a third diameter, wherein the third diameter is smaller than the first diameter and larger than the second diameter. Force is applied to the first and second portions of the rubber strip to clamp the flexible material within the slot.

Images