EP1881148B1 - Retractable window covering, having a length expanding stiffening rod - Google Patents
Retractable window covering, having a length expanding stiffening rod Download PDFInfo
- Publication number
- EP1881148B1 EP1881148B1 EP07252855A EP07252855A EP1881148B1 EP 1881148 B1 EP1881148 B1 EP 1881148B1 EP 07252855 A EP07252855 A EP 07252855A EP 07252855 A EP07252855 A EP 07252855A EP 1881148 B1 EP1881148 B1 EP 1881148B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- window covering
- guiding element
- magnets
- retractable window
- magnet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000004744 fabric Substances 0.000 claims description 29
- 239000000696 magnetic material Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 description 8
- 239000003351 stiffener Substances 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000009957 hemming Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47H—FURNISHINGS FOR WINDOWS OR DOORS
- A47H23/00—Curtains; Draperies
- A47H23/01—Bottom bars for stretching hanging curtains; Magnets, slide fasteners, or the like to improve closing of curtains
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47H—FURNISHINGS FOR WINDOWS OR DOORS
- A47H1/00—Curtain suspension devices
- A47H1/02—Curtain rods
- A47H1/022—Curtain rods extensible
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47H—FURNISHINGS FOR WINDOWS OR DOORS
- A47H2201/00—Means for connecting curtains
- A47H2201/01—Magnets
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47H—FURNISHINGS FOR WINDOWS OR DOORS
- A47H2201/00—Means for connecting curtains
- A47H2201/02—Hook-and-loop fasteners
Definitions
- the present invention provides a retractable window covering, including: a support member adapted to be secured to a building surface; a flexible fabric panel having a first edge secured to the support member and a second edge depending downwardly; a weight bar attached to the second edge; a retraction mechanism associated with the support member for raising and lowering the weight bar and thereby retracting the fabric panel; the fabric panel being provided with at least one elongate pocket across its width, accommodating a length expanding stiffening rod; the stiffening rod has an end element having: an elongate guiding element of non-magnetic material; a first magnet guided for movement along the elongate guiding element; a second magnet guided for movement along the elongate guiding element and positioned in respect of the first magnet, effective for the first and second magnets to repulse one another and whereby the guiding element limits and guides the movement of the first and second magnets in respect to one another.
Landscapes
- Curtains And Furnishings For Windows Or Doors (AREA)
Description
- The present invention relates to a curtain stiffener rod for a retractable window covering.
- Examples of such window coverings, using foldable curtain material and stiffening rods are described in, amongst others,
US 3487875 ,DE 3615349 ,DE 3631919 ,DE 4323993 ,DE 4419410 , andEP 0451912 . - With these conventional window coverings it has been customary to create open tunnels on the curtain fabric into which the stiffening rods can be inserted endwise. Because often this has required additional measures to retain the stiffening rods in position with respect to the fabric, it has also become customary to hem the fabric after insertion of the stiffening rods and thereby close off the open ends of the tunnels.
- While this hemming has successfully located the stiffening rods, it has also impaired the ability to wash the window covering fabric, in that it was thereby no longer possible to remove the stiffener rods. A solution to this problem was proposed by
FR 2541363 - This solution has worked to a certain extend, but it has required either the fabric to be sufficiently elastic or the stiffener rods to be shorter than the full width of the fabric. The fabric materials used for the subject foldable curtain window coverings need to be form stable and fabric with elastic properties is thereby out of the question, as it would compromise the decorative properties of this type of window coverings. It has thus sometimes been difficult to insert a stiffener rod that completely fills out the pocket into which it is inserted from an inwardly positioned slit or button hole by stretching and relaxing the fabric over the end of the rod. The use of slightly shorter rods that do not completely fill out the entire pocket has proven not to be a practical option, as it has not sufficiently prevented the fabric to ripple by changes in humidity and thereby resulted in objectionable looks.
- Accordingly it has become customary to use stiffening rods with a variable length, such as those proposed by
WO 2005040543 which is considered to be the closest prior art. Such telescopic rods on one of their longitudinal ends have an end part that is biased by a compression spring to expand the rod beyond its compressed length. This has enabled the rod to be inserted through a hole in the tunnel that is positioned inwardly of a lateral hem and allowed the rod to expand after its insertion to completely occupy the pocket formed by a tunnel and opposite lateral hems. Nonetheless it has been difficult to control the appropriate spring force and range of length variation, as different fabrics and dimensional tolerances in the fabric have required different spring forces. This has been both a nuisance in stock keeping and in achieving an optimum result. The use of compression springs has also been a cause of unsightly deformations in a number of circumstances beyond the control of the manufacturer. - Accordingly it is an object of the present invention to overcome or ameliorate at least one of the disadvantages of the prior art. It is also an object of the present invention to provide alternative structures which are less cumbersome in assembly and operation and which moreover can be made relatively inexpensively. Alternatively it is an object of the invention to at least provide the public with a useful choice.
- To this end the present invention provides a retractable window covering, including: a support member adapted to be secured to a building surface; a flexible fabric panel having a first edge secured to the support member and a second edge depending downwardly; a weight bar attached to the second edge; a retraction mechanism associated with the support member for raising and lowering the weight bar and thereby retracting the fabric panel; the fabric panel being provided with at least one elongate pocket across its width, accommodating a length expanding stiffening rod; the stiffening rod has an end element having: an elongate guiding element of non-magnetic material; a first magnet guided for movement along the elongate guiding element; a second magnet guided for movement along the elongate guiding element and positioned in respect of the first magnet, effective for the first and second magnets to repulse one another and whereby the guiding element limits and guides the movement of the first and second magnets in respect to one another.
-
Figure 1 is a perspective view of one form of retractable window covering according to the invention; -
Figure 2 is a longitudinal cross section through the stiffener rod forming part of the invention; and -
Figure 3 is a perspective partly exploded view of the stiffener rod ofFigure 2 . - Referring first to
Figure 1 there is shown a retractable window covering in the form of a roman shade 1. The roman shade 1 includes a support member in the shape of ahead rail 3 and a sheet offabric material 5. The sheet offabric 5 is preferably confectioned with a strip of Velcro material 7 to its upper margin, which cooperates with a strip of similar material attached to thehead rail 3. This manner of removable attachment of a window covering fabric to a head rail is conventional and needs no further description. The sheet offabric 5 is also provided with a hem 9 on a lateral margin and a similar hem 11 to a lower margin. The lower hem 11 conveniently houses aweight bar 13 to assist in its lowering. Also attached to the lower hem 11 is one of at least a pair oflift cords 15, which are operative to retract the bottom hem 11 andweight bar 13 towards thehead rail 3 in a conventional manner. - The
lift cord 15 is further guided by aneyelet 17 attached to an elongate transverse pocket ortunnel 19 formed onto thefabric 5. While for ease of reference onesuch tunnel 19 is shown, these can be repeated at will at regular intervals along the height of thefabric panel 5. It is further seen inFigure 1 , that theelongate pocket 19 accommodates astiffening rod 21. Thisstiffening rod 21, it is to be understood, fills out the inside of thepocket 19 between a hemmed lateral margin (such as 9) on each opposite side of thefabric panel 5. To remove and reinsert thestiffening rod 21 from, and into, thepocket 19 there is provided an inwardly positionedbutton hole 23, giving access to the interior of thepocket formation 19. - As explained above a length expandable and compressible type of
stiffening rod 21 is preferred for this type of application. The particular rod forming part of the present invention is illustrated inFigure 2 and includes a generallytubular member 25 and anend element 27. Theend element 27 includes an elongate guiding element, here in the form of ashaft 29. The elongate shaft-like guidingelement 29 on one end portion of its length has an enlargedcross-section 31 which is adapted in size and shape to fit slidingly within thehollow interior 33 of thetubular member 25. Theopposite end 35 of the shaft likeend element 29 is bifurcated and hasflexible detents main shaft portion 29. Slidingly engaged around theshaft 29 are afirst magnet 41 and asecond magnet 43. The elongate guiding element is preferably of a non-magnetic material. The first andsecond magnet second magnets second magnet 43 is positioned with respect to thefirst magnet 41 to repulse, then the first magnet will be forced against the enlarged cross section en 31 and the first magnet is forced against thedetents Figure 3 . Applying a moderate force against the exposed bifurcatedend 35 will move the enlargedsection 31 further into thetubular end rod 25 as shown inFigure 2 , because thefirst magnet 41 has substantially the same outside diameter as thetubular rod 25. Using this effect, allows the preassembled stiffening rod 1 as shown inFigure 2 to be introduced through thebutton hole 23 of theelongate pocket 19 of the window covering 1 shown inFigure 1 . Thereby the bifurcatedend 35 can pass the inwardly positionedbutton hole 23 and expand to the full length of thepocket 19 afterwards. - It has been found important that the expanding force is only moderate, so as not to deform in any way the fabric material of the window covering.
- Similarly it has been found important that the stiffening rod fills the entire pocket across the fabric panel and that it does so automatically. Helical springs have been proposed for this purpose, but have only allowed a limited range if expansion so as to keep the expansion force within narrow limits. Also these springs have been covered with sleeves extending beyond the diameter of the stiffener rods, so as to prevent the spring windings from becoming entangled with the interstices of the fabric material. The length expanding stiffening rod used in the present invention does not have any of the aforementioned drawbacks.
- It is thus believed that the operation and construction of the present invention will be apparent from the foregoing description. The term comprising when used in this description or the appended claims should not be construed in an exclusive or exhaustive sense but rather in an inclusive sense. Eexpressions such as: "means for ...". should be read as: "component configured for ..." or "member constructed to ..." and should be construed to include equivalents for the structures disclosed. The use of expressions like: "critical", "preferred", "especially preferred" etc., is not intended to limit the invention. Features which are not specifically or explicitly described or claimed may be additionally included in the structure according to the present invention without deviating from its scope.
- The invention is further not limited to any embodiment herein described and, within the purview of the skilled person, modifications are possible which should be considered within the scope of the appended claims. Equally all kinematic inversions are to be considered within the scope of the present invention.
Claims (6)
- Retractable window covering, including:- a support member adapted to be secured to a building surface;- a flexible fabric panel (5) having a first edge secured to the support member and a second edge depending downwardly;- a weight bar (13) attached to the second edge;- a retraction mechanism associated with the support member for raising and lowering the weight bar and thereby retracting the fabric panel;- the fabric panel being provided with at least one elongate pocket (19) across its width, accommodating a length expanding stiffening rod (21) characterised in that the stiffening rod has an end element with:- an elongate guiding element (29) of non-magnetic material;- a first magnet (41) guided for movement along the elongate guiding element; and- a second magnet (43) guided for movement along the elongate guiding element and positioned in respect of the first magnet, effective for the first and second magnets to repulse one another and whereby the guiding element limits and guides the movement of the first and second magnets in respect to one another.
- Retractable window covering according to claim 1, wherein the guiding element is a container in which the first and second magnets are slidably constrained.
- Retrectable window covering according to claim 1 or 2, wherein the guiding element includes a shaft (29).
- Retractable window covering according to claim 3, wherein the first and second magnets (41,43) each have a central aperture for engaging the shaft.
- Retractable window covering according to claim 4, wherein each of the first and second magnets (41,43) is annular in shape.
- Retractable window covering according to any preceding claim, wherein the retraction mechanism uses lift cords (15) to retract the fabric panel (5).
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07252855A EP1881148B1 (en) | 2006-07-21 | 2007-07-19 | Retractable window covering, having a length expanding stiffening rod |
PL07252855T PL1881148T3 (en) | 2006-07-21 | 2007-07-19 | Retractable window covering, having a length expanding stiffening rod |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06015275 | 2006-07-21 | ||
EP07252855A EP1881148B1 (en) | 2006-07-21 | 2007-07-19 | Retractable window covering, having a length expanding stiffening rod |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1881148A1 EP1881148A1 (en) | 2008-01-23 |
EP1881148B1 true EP1881148B1 (en) | 2010-07-07 |
Family
ID=38663574
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07252855A Active EP1881148B1 (en) | 2006-07-21 | 2007-07-19 | Retractable window covering, having a length expanding stiffening rod |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1881148B1 (en) |
PL (1) | PL1881148T3 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202009001916U1 (en) * | 2009-02-26 | 2009-05-20 | Lienert, Achim | Retaining rail for releasably securing a fabric or film web to an object |
US10030437B2 (en) * | 2010-04-12 | 2018-07-24 | Jason B. Teuscher | Vertical blind assembly |
US10253561B2 (en) | 2010-04-12 | 2019-04-09 | Sunflower Shades And Blinds Llc | Vertical blind assembly |
US11306533B2 (en) | 2010-04-12 | 2022-04-19 | Sunflower Shades And Blinds Llc | Vertical blind assembly |
US10731410B2 (en) | 2010-04-12 | 2020-08-04 | Wondershades Llc | Vertical blind assembly |
FR3017896B1 (en) * | 2014-02-26 | 2016-03-04 | Trigano Mdc | "WHALE FOR STORE BOAT COMPRISING A MAGNET BAR FIXED BY CLAMPING USING AN ELASTIC SHEATH" |
GB2552315B (en) * | 2016-07-15 | 2018-07-11 | My Home Global Co | Magnetically attractive shade assembly |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1278742C (en) * | 1986-07-04 | 1991-01-08 | Mark W. Patteson | Vertically drawn shower curtain |
US5111866A (en) * | 1991-06-05 | 1992-05-12 | Prostko Robert N | Movable shade system |
DE20217015U1 (en) * | 2002-11-05 | 2003-03-06 | Schieble Karl | Magnetic roller blind mechanism for small windows has an upper base profile and a cover on the upper of head side which fixes to the roller or window |
BE1015713A3 (en) * | 2003-10-13 | 2005-07-05 | Lampe Dominique | End sleeve for tunnel of roman blinds. |
US7150304B2 (en) * | 2003-11-26 | 2006-12-19 | Ching Feng Blinds Ind. Co., Ltd. | Cordless blind structure |
CA2486333A1 (en) * | 2004-10-26 | 2006-04-26 | Nien Made Enterprise Co., Ltd. | Collapsing and securing device of lateral blinds |
-
2007
- 2007-07-19 EP EP07252855A patent/EP1881148B1/en active Active
- 2007-07-19 PL PL07252855T patent/PL1881148T3/en unknown
Also Published As
Publication number | Publication date |
---|---|
PL1881148T3 (en) | 2010-12-31 |
EP1881148A1 (en) | 2008-01-23 |
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