• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A roller blind assembly comprising a roller blind. The roller blind comprises a roller having a blind wound around the roller. The roller comprises an internal spring 5 configured to be tensioned so as to allow for rolling out and return of the blind. The spring is connected to a spigot extending from a first end of the roller such that rotation of the spigot adjusts tension in the spring. A second end of the roller blind is supported by a bracket when the roller blind is fitted. The spigot is supported for rotation by a support member and the assembly further comprising retaining means for retaining the spigot 10 under tension. irrr c cj ----------- 0c irLO
    公开号:AU2013222032A1
    申请号:U2013222032
    申请日:2013-09-02
    公开日:2014-03-20
    发明作者:Antonius Cornelis De Maaijer
    申请人:de Maaijer, Antonius Cornelis MR；
    IPC主号:E06B9-40
    专利说明:
    P/00/01 1 Regulation 3.2 AUSTRALIA Patents Act 1990 COMPLETE SPECIFICATION FOR A STANDARD PATENT ORIGINAL TO BE COMPLETED BY APPLICANT Name of Applicant: Antonius Cornelis de Maaijer Address for Service: A.P.T. Patent and Trade Mark Attorneys PO Box 222, Mitcham, SA 5062 Invention Title: Roller blind tensioning apparatus The following statement is a full description of this invention, including the best method of performing it known to me/us:- ROLLER BLIND TENSIONING APPARATUS FIELD OF THE INVENTION The present invention relates generally to a roller blind tensioning apparatus and in one 5 particular aspect relates to an apparatus including a wheel for tensioning the spring of a biased roller blind. BACKGROUND OF THE INVENTION There are many interior and exterior blind systems that comprise a biased roller that is 10 configured to receive the blind material when rolled up. Some of these systems include vertical tracks on either side of the window or opening, wherein the blind includes enlarged or expanded vertical edges that slidably engage keyways in respective tracks. Other blinds include sides that are simply positioned adjacent the edge of the window or opening and do not engage with any tracks. 15 Many of these existing biased roller blinds typically include an internal coiled spring that is pre-tensioned prior to installation of the blind. The tensioning of the spring means that the blind material can be rolled onto, or fed off, the roller as the blind is manually moved up or down. The blinds may include a drawbar or handle that can be grasped by a user 20 to operate the blind. The drawbar or handle is retained in position when the user is not moving it against the action of the spring. This means that the blind does not automatically retract when not being influenced by the user. Accordingly the blind can be opened or closed by a user who is able to move the 25 drawbar to the desired positioned. When the user releases the drawbar the roller is tensioned such that the drawbar does not move up or down. In this way the blind can be manually positioned in multiple alternate locations between and including fully retracted and fully extended positions. 30 A difficulty with the existing blind tensioning systems is that the person installing the blind must firstly pretension the internal spring with a spanner or similar tool. A blind shaft that is connected to the internal spring of the roller is manually rotated by the person, relative the outer portion of the blind roller. An end of the shaft is then positioned within a slot or capturing means at the edge of the window or opening. The slot or capturing means may 35 be located within an end plate or bracket attached to the wall or form part of a pelmet. The securing of the blind shaft retains the spring in a tensioned configuration to permit 2 operation of the blind. It is however difficult to maintain the internal spring in the tensioned position whilst engaging the shaft into the slot especially where the correct size spanner is not available or the person installing the blind is inexperienced. This means that the spring may not be correctly tensioned which can affect the operation of the blind 5 or require removal of the blind for retensioning of the spring. It should be appreciated that any discussion of the prior art throughout the specification is included solely for the purpose of providing a context for the present invention and should in no way be considered as an admission that such prior art was widely known or 10 formed part of the common general knowledge in the field as it existed before the priority date of the application. SUMMARY OF THE INVENTION The present invention allows for tensioning a spring of a roller blind after the blind has 15 been mounted in place. This is achieved by providing for a support member that may be fixed for example to a wall a spigot extending from a first end of a roller blind, preferably engaging a rotatable member rotatably supported by the support member, rotation of the spigot adjusts tension of the spring of the roller blind. The rotatable member, or spigot, is held in place once the desired tension has been imparted. 20 In one form the invention could be said to reside in a roller blind assembly comprising a roller blind, the roller blind comprising a roller having a blind wound around the roller, the roller comprising an internal spring configured to be tensioned so as to allow for rolling out and return of the blind, the spring connected to a spigot extending from a first end of 25 the roller such that rotation of the spigot adjusts tension in the spring, a second end of the roller blind supported by a bracket when the roller blind is fitted, and the spigot supported for rotation by a support member and the assembly further comprising retaining means for retaining the spigot under tension. 30 The roller blind assembly preferably further comprises a rotatable member, the rotatable member engaged with the spigot and supported by the support member to allow for rotation of the rotatable member, the rotatable member being accessible for rotation when supported by the support member, to allow for adjusting the tensioning of the spring when the roller blind is fitted. In one form the rotatable member is a wheel and 35 preferably there is provided a drive means to rotate the wheel. 3 It another form the invention could be understood to resides in an apparatus for tensioning a spring of a roller blind, including a wheel for engagement with an end of the roller blind, wherein the wheel is rotatable to tension said spring of the roller blind, and thereafter the wheel being held to inhibit rotation, whereby the spring is retained in a 5 tensioned configuration for operation of said roller blind. The wheel may engage a spigot that extends outwardly from said end of the roller blind, wherein the spigot is connected to said spring. In another form the wheel include an axial protrusion that engages with a cooperatingly shaped opening in the end of the roller 10 blind. In one form the apparatus further includes a drive means that engages said wheel and a support member for retaining said wheel, wherein the wheel is rotated by way of the drive means to tension said spring. 15 The wheel may include radial projections, wherein the drive means engages said projections for rotating the wheel. The wheel may be a sprocket that meshes with a chain, track or other perforated or indented drive means. In another form, the wheel may be a gear having circumferentially extending teeth, or cogs, which mesh with a toothed 20 drive means. The wheel may also include a slip resistance circumference wherein a belt engages the circumference of the wheel to firstly tension the spring and then inhibit the wheel from rotating to retain the spring in a tensioned configuration. The drive means may be a toothed worm or screw. Alternatively the drive means may be 25 another gear with which the teeth of the wheel mesh. In still another form the drive means may be a chain or cable that engages with a toothed pulley. The tensioning of the spring means that the blind is rolled onto, or fed off, a roller of the blind as it is manually moved up or down by a user. The spring is preferably an internal 30 spring being positioned within said roller. In one form the roller includes an outer cylinder having at least one end that rotatably engages a blind shaft. The blind shaft may include a first end positioned within said cylinder for engagement with said spring. The spring is preferably a coiled spring. The 35 blind shaft may further include a second end protruding outwardly from the cylinder and engagable with said wheel. 4 The support member, in one form, includes a body having a recess for rotatably retaining the wheel. The wheel is preferably positionable substantially within the recess. The recess being generally circular and having openings for permitting engagement between the drive means and the wheel. In one form a generally circular wall that extends 5 outwardly from the body forms said recess. In another form a retaining cup is used to retain the wheel. The retaining cup may be attachable to the support member or may be integral with the support member. The wheel may be a generally circular disc having a grooved circumferential outer 10 portion, comprising a plurality of grooves or radial projections, for engagement with the chain, cog or worm drive. The centre point or axis of the wheel includes a means for registering with the blind shaft. In one form the wheel includes a generally square or rectangular axial slot that is 15 configured to engage with the second end of the blind shaft that has a generally square or rectangular cross-sectional profile of smaller dimensions than the slot. The wheel is preferably positioned between the support member and roller of the blind. The wheel engages the end of the roller and is rotatably retained within the recess or 20 retaining cup of the support member. The wheel may be held in position against the action of the spring. This can be done by fixing the drive means, or alternatively the drive means is mounted such that greater force is required to move the wheel than is generated by the tensioned spring. This 25 frictional engagement of the drive means retains the wheel in position until a user applies sufficient force to move the wheel by way of the drive means. In another form a clip, clamp or pin is used to fix the wheel. The body of the support member is preferably fixed relative the surface to which the blind 30 is attached. The support member may form part of the pelmet of a blind system or may be a separate bracket for engaging an end of the roller mounted blind. The roller of said blind may include springs or biasing means at opposite ends of the cylinder. Alternatively a spring may be located at only one end of the cylinder with the 35 opposite end engaging an indexing means in a mounting bracket. 5 In another form the apparatus for tensioning a spring of a roller blind, includes a support member and pulley for engaging an end of a roller of said roller blind, wherein the pulley rotatably engages said support member for tensioning said spring, the pulley being lockable relative to the support member to inhibit rotation of said pulley, whereby the 5 spring is retained in a tensioned configuration for operation of said roller blind. The support member, in one form, includes a body having a recess for rotatably engaging the pulley. The pulley is preferably positionable substantially within the recess. The recess being generally circular and having openings for permitting the passage of a 10 chain that is engagable with a portion of the pulley. In one form a generally circular wall that extends outwardly from the body forms said recess. The pulley may be a generally circular disc having a grooved circumferential outer portion, comprising a plurality of grooves, for engagement with the chain, wherein each 15 link of the chain registers with a respective groove. The grooved outer portion in one form is located intermediate of two generally circular or disc-shaped flanges that extend outwardly from the grooved portion. In this way the flanges bears against the edges of the recess and the chain is positionable between the flanges and an inner surface of the recess such that the chain engages with and is retained in contact with the grooved outer 20 portion of the pulley. The pulley may be locked in position against the action of the spring by securing a clip to the chain. The clip bears against the circular wall to prevent the pulley from rotating. 25 In another aspect of the invention there is proposed a method of tensioning a spring of a roller mounted blind, including the steps of: attaching an apparatus to a surface on which said blind is to be mounted, the apparatus including a rotatable wheel for tensioning a spring of said roller; engaging a rotatable blind shaft of said blind with said wheel, the shaft being 30 connected to said spring; rotating said wheel to tension said spring; and holding said wheel to inhibit rotation thereof, to retain the spring in a tensioned configuration for operation of said blind. 35 In accordance with another aspect of the invention there is proposed a roller mounted blind including, 6 a length of blind material mounted on the roller and having enlarged, whereby the blind can be fed off or wound onto said roller, a handle attached to a bottom edge of the blind material and graspable to move said length of blind material, and 5 an apparatus for tensioning a spring of a roller blind, including a wheel for engagement with an end of the roller blind, wherein the wheel is rotated to tension said spring of the roller blind, whereafter the wheel being held in place to inhibit rotation thereof to retain the spring in a tensioned configuration for operation of said roller blind. 10 In one form the roller mounted blind further includes two parallel spaced apart side tracks having opposing longitudinally extending keyways, wherein the length of blind material having enlarged side portions engagable with said keyways in respective side tracks, the blind being movable along said keyways such that the blind material is fed off or wound onto said roller. 15 BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate implementations of the invention and, together with the description, serve to explain the advantages and principles of the invention. In the drawings, 20 Figure 1 is a partial perspective view of a roller blind of the prior art illustrating the pre-tensioning of the internal spring; Figure 2 is an end view of one embodiment of the roller blind for use with the present invention, illustrating the central rotatable portion; Figure 3 is a perspective view of one embodiment of the support member of the 25 apparatus of the present invention; Figure 4 is a perspective view of the chain-engaging wheel that is positionable within the recess of the support member of figure 3; Figure 5 is a perspective view of the wheel engaging a chain being positioned within the recess of the support member. 30 Figure 6a is a perspective view of the apparatus of figure 5; 7 Figure 6b is a perspective view of the apparatus of figure 6a illustrating the engagement of the blind roller; Figure 6c is a perspective view blind of figure 6b illustrating a clip for attachment to the chain; 5 Figure 6d is a perspective view of the blind of figure 6c illustrating the clip attached to the chain that is subsequently cut; Figure 7 is a top view of a second embodiment of the apparatus illustrating a worm drive; Figure 8 is a side view of the apparatus of figure 7; 10 Figure 9 is a side view of a third embodiment of the apparatus; and Figure 10 is a top view of a fourth embodiment of the apparatus. DETAILED DESCRIPTION OF THE ILLUSTRATED AND EXEMPLIFIED EMBODIMENTS There are numerous specific details set forth in the following description. However, from 15 the disclosure, it will be apparent to those skilled in the art that modifications and/or substitutions may be made without departing from the scope and spirit of the invention. In some circumstance specific details may have been omitted or enlarged so as not to obscure the invention. Similar reference characters indicate corresponding parts throughout the drawings. 20 The present invention in one embodiment comprises an apparatus 10 for tensioning a spring of a roller mounted blind 12. Figures 1 and 2 illustrate an example a conventional roller mounted blind 12 including a cylindrical roller 14 to which a length of blind material 16 is attached. The blind material 16 being rolled onto, or fed off, the roller 14 as the 25 blind 12 is moved up or down. A generally ring shaped holder 18 frictional engages into at least one end of the cylindrical roller 14. The holder 18 includes a central passageway for engagement with a blind shaft 20 wherein the blind shaft 20 is able to rotate within the passageway and is held in place by a bearing 22, in the present embodiment being a plurality of ball bearings. 30 The blind shaft 20 includes a first end 24 positioned within said cylindrical roller 14 for engagement with a spring 26. As the reader will appreciated the spring 26, once 8 tensioned, facilitates the feeding off or capturing of the blind material 16 on the cylindrical roller 14 as the blind is moved up or down. The blind shaft 20 further includes a spigot 28 at a second end that protrudes outwardly from the end 30 of the cylindrical roller 14. 5 The spigot 28 is generally coaxial with the cylindrical roller 14 and has a generally square cross-sectional profile, although the second end may have a rectangular cross-sectional profile. The spigot 28 is configured to engage with a generally square shaped slot 32 in a mounting plate 34. The spring 26 is pretensioned prior to the spigot 28 being located within slot 32 by using a spanner or similar tool to rotate the blind shaft 20 in the direction 10 of arrow 36. This however poses difficulties in tensioning the spring correctly prior to engaging the shaft 20 into slot 32. The spring 26 must be tensioned correctly such that the weight of the blind material 16 and drawbar 38 allows the cylindrical roller 14 to wind the blind material 16 onto, or off, 15 the roller when the drawbar is being moved up, or down, by a user, while inhibiting the movement of the blind when not being manually operated by a user. Incorrect tensioning of the spring requires the removal of the shaft 20 from slot 32 and retensioning of the spring. 20 In one embodiment as illustrated in figures 3 to 6d there is provided an apparatus 10 for tensioning the spring 26 demonstrating by way of example, an arrangement in which the principles of the present invention may be employed. The apparatus 10 of the first embodiment includes a support member 40 for supporting the end 30 of the roller 14. The support member 40, as illustrated in figures 3 and 4, includes a body 44 having a 25 recess 46 for holding a wheel 48. The wheel 48 is rotatably positioned within the recess 46 and is lockable relative the support member to retain the spring 26 in a tensioned configuration for operation of the blind 12. The body 44 may be an end member of a pelmet or comprise a bracket for supporting 30 the roller 14. In the present embodiment the body 44 includes an upstand 50 extending partially around the edge of the support member. The upstand 50 is configured to engage with the main portion of a pelmet (not shown). The body 44 also includes a projection 52 that may be used to prevent rotation of the support member 40 once installed. 35 9 A generally circular wall 54 extends outwardly from the body 44 to thereby form the recess 46. It should however be appreciated that the recess 46 may be formed from a hollowed out space in the body 44 itself. The wall 54 is incomplete in that it includes openings 56, 58 for permitting the passage of a chain 60 that is engagable with the wheel 5 48. As illustrated in figure 4 the wheel 48 is a generally circular disc having a grooved circumferential outer surface 62 intermediate of flanges 64, 66. The grooved circumferential outer surface 62 is configured to engage with the chain 60 and is slightly 10 recessed relative the flanges 64, 66 to provide a space for the chain 60. As illustrated in figure 5 the chain 60 is wound around the wheel 48 that is then positioned within the recess 46 such that the ends 68, 70 of the chain 60 pass through openings 56 and 58 and extending outwardly from the support member 44. 15 In this way pulling on alternate ends 68, 70 will rotate the wheel either clockwise or anti clockwise. Accordingly the present invention can be used to tension the spring 26 in either direction depending upon the installation requirements. 20 As further illustrated in figure 5 the flanges 64, 66 of the wheel bears against the sides of the recess 46. The chain 60 is positioned between the flanges and side of the recess such that it engages with and is retained in contact with the grooved outer surface 62 of the wheel 48. 25 The centre point of the circular wheel 48 includes a slot 72 for registering with the blind shaft 20. The generally square laterally extending slot 72 is configured to engage with the spigot 28 of the blind shaft 20 which has a generally square cross-sectional profile of a smaller size than the generally square slot 72. 30 Figures 6a to 6d, illustrate the steps of tensioning an internal spring 26 of a roller mounted interior blind 12. Firstly the body 44 of the apparatus 10 is attached to a surface such as, but not limited, to a window frame or pelmet. The support member is held in position relative the surface by projection 52. The chain 60 is then wrapped around the wheel 48 that is then placed within recess 46. 35 10 The spigot 28 of the blind shaft 20 is then positioned within the slot 72 such that the end 30 of the cylindrical roller 14 abuts the wheel 48 and the blind shaft 20 is connected to the wheel 48, as illustrated in figure 6b. 5 As further illustrated in figure 6b the chain 60 is pulled in the direction of arrow 74 that causes rotation of the wheel 48 in the direction of arrow 76 which in turn rotates the blind shaft 20 held within the cylindrical shaft 14. This results in the tensioning of the internal spring 26. As the skilled addressee will appreciate the spring can be appropriately tensions to ensure correct operation of the blind. 10 Once the spring 26 has been correctly tensioned the person installing the blind 12 maintains tension on the chain 60 while securing a clip 78 to the chain 60 adjacent opening 56. The securing of the clip 78 inhibits the wheel 48 from rotating in a reverse direction under the influence of the tensioned spring 26. 15 The clip 78 bears against the circular wall 54 on either side of opening 56 to inhibit the wheel from rotating. In other embodiments a clip or clamp is connected to a protrusion, or a key that engages a slot in the body is used to secure the chain. Furthermore the wheel may be secured by a screw or pin that prevents rotation thereof. 20 The wheel may be operated by way of a rope or chord that frictionally engages the wheel or be rotated by an elongate tool, winder or ratchet means. The reader should also appreciate that the wheel may be a geared mechanism wherein a cog including a toothed outer circumference engages a cooperatingly toothed pulley that engages the 25 blind shaft. An edge of the cog extending outwardly from the support member such that a user is able to wind the cog to mechanically move the toothed wheel to thereby tension the spring. The locking of the wheel 48 retains the spring 26 in a tensioned configuration for correct 30 operation of the blind 12. Once locked in place the portions of chain 68, 70 extending outwardly from the body can be cut off, as illustrated in figure 6d. The excess chain is no longer required for correct operation of the blind and can therefore be removed or concealed for aesthetics purposes. 35 Turning to figure 7 there is illustrated another embodiment of the invention illustrating a worm drive type configuration. The apparatus 10 includes a wheel 48 that is engaged by 11 a drive means 80. The drive means 80 includes a screw portion 82 that is configured to mesh with circumferential teeth 84 of the wheel 48. The drive means 80 is rotatably mounted on mounts 86 that are connected to the support member 44. Opposite ends of the drive means 80 include indexing means 88 that are accessible through openings 90 5 in the upstands 50 of the support member 44. The indexing means 88 are configured for registry with a correspondingly shaped tool to move the drive means thereby rotating the wheel and tightening the spring 26. The wheel 48 is retained by a retaining cup 92 that is releasably attached to the body 44 10 by way of lugs 94. As further illustrated in figures 8 and 9 the indexing means 88 may be a hexagon shaped head 96, as illustrated in figure 8, for engaging a socket spanner, or perpendicular slots 98, as illustrated in figure 9, for engaging a screwdriver. The reader should however 15 appreciated that the indexing means 88 may also be a hexagon shaped cavity for engaging a hex key or any other type of cooperating members. The support member 44, as illustrated in figure 10, may include an upstand 100 for retaining the wheel 48 therein. The upstand 100 includes a gap 102 to permit 20 engagement between the drive means 80 and the wheel 48. A person installing the apparatus 10 is able to tension the spring 26 of the roller 14 by accessing the indexing means 88 of the drive means 80 through adjacent aperture 90. In this way the user can utilise an appropriate tool to turn the drive means 80 in the 25 direction of arrow 104 to rotate the wheel in the direction of arrow 106. Opposite ends of the drive means 80 include respective indexing means 88 that are accessed through corresponding apertures 90. This means whichever orientation the apparatus is attached adjacent the wall surface, an aperture 90 will be accessible by the user to move the drive means 80. 30 The reader will appreciate that the wheel may include circumferentially extending teeth that engage with the drive means 80. The drive means may be a toothed worm or screw. Alternatively the drive means 80 may be another gear with which the teeth of the wheel mesh. In still another form the drive means may be a chain or cable that engages with 35 the teeth of the wheel. 12 The skilled addressee will now appreciate the illustrated invention provides a blind that has benefits over the prior art. The invention provides a means for tensioning a spring of a roller mounted blind that does not require the use of a spanner or like to hold the blind shaft and spring in a tensioned configuration whilst trying to register the shaft within a 5 locating aperture. The present invention provides an apparatus and method for tensioning the spring that is simpler than existing systems and reduces the chance of the spring losing tension during installation. Various features of the invention have been particularly shown and described in 10 connection with the exemplified embodiments of the invention, however, it must be understood that these particular arrangements merely illustrate and that the invention is not limited thereto. Accordingly the invention can include various modifications, which fall within the spirit and scope of the invention. It should be further understood that for the purpose of the specification the word "comprise" or "comprising" means "including but 15 not limited to". 13
    权利要求:
    Claims (19)
    [1] 1. A roller blind assembly comprising a roller blind, the roller blind comprising a roller having a blind wound around the 5 roller, the roller comprising an internal spring configured to be tensioned so as to allow for rolling out and return of the blind, the spring connected to a spigot extending from a first end of the roller such that rotation of the spigot adjusts tension in the spring, a second end of the roller blind supported by a bracket when the roller blind is fitted, and 10 the spigot supported for rotation by a support member and the assembly further comprising retaining means for retaining the spigot under tension.
    [2] 2. The roller blind assembly of claim one further comprising a rotatable member, the rotatable member engaged with the spigot and supported by the support 15 member to allow for rotation of the rotatable member, the rotatable member accessible for rotation when supported by the support member, to allow for adjusting the tensioning of the spring when the roller blind is fitted.
    [3] 3. The roller blind assembly of either claim 1 or claim 2 wherein the rotatable 20 member is a wheel.
    [4] 4. The roller blind assembly of claim 3 the apparatus further comprising a drive means to rotate the wheel. 25
    [5] 5. The roller blind assembly of claim 4 wherein the wheel is a sprocket, and the drive means is a chain that can be pulled away from the wheel in clockwise of counterclockwise manner to adjust the tension.
    [6] 6. The roller blind assembly of claim 5 wherein retaining means comprise an 30 interlock that engages with the chain and external stop so that the chain cannot be further adjusted.
    [7] 7. The roller blind assembly of either one of claims 3 or 4 wherein the wheel is a gear having circumferentially extending teeth. 35 14
    [8] 8. The roller blind assembly of claim 7 wherein the drive means is a worm drive, engaged with the gear
    [9] 9. The roller blind assembly of claim 8 wherein worm drive is held within the support 5 means and is accessibly by a tool engageable therewith for turning the worm drive
    [10] 10. An apparatus for tensioning a spring of a roller blind, including a wheel for engagement with an end of the roller blind, wherein the wheel is rotatable to tension said spring of the roller blind, when the blind is mounted in place, and thereafter the wheel 10 being held to inhibit rotation, whereby the spring is retained in a tensioned configuration for operation of said roller blind.
    [11] 11. The apparatus of claim 10 wherein the wheel engages a spigot that extends outwardly from said end of the roller blind, wherein the spigot is connected to said spring. 15
    [12] 12. The apparatus of claim 11 further including a drive means that engages said wheel and a support member for retaining said wheel, wherein the wheel is rotated by way of the drive means to tension said spring. 20
    [13] 13. The apparatus of claim 12 wherein wheel is a sprocket, and the drive means is a chain that meshes with the sprocket.
    [14] 14. The apparatus of claim 12 wherein the wheel is a gear comprising circumferentially extending teeth. 25
    [15] 15. The apparatus of claim 14 wherein the drive means is a worm drive.
    [16] 16. The apparatus of claim 15 wherein the drive mean is operable by engagement with a hand tool. 30
    [17] 17. The apparatus of any one of claims 10 to 16 wherein support member includes a body having a recess defined within a circular wall for rotatably retaining the wheel.
    [18] 18. The apparatus of claim 17 wherein the recess comprises at least one opening 35 through which there is engagement between the drive means and the wheel. 15
    [19] 19. The apparatus of claim 18 when the drive means is a chain the wheel is locked in position against the action of the spring by securing a clip to the chain the clip bearing against the circular wall. 16
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    同族专利:
    公开号 | 公开日
    AU2013222032B2|2018-07-05|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR3104633A1|2019-12-13|2021-06-18|Mariton Sa|Roll-up device for awning fabric|US1409722A|1921-06-28|1922-03-14|Charles W Hutchinson|Curtain hanger|
    US4884618A|1988-08-05|1989-12-05|Christopher Steeves|Roller blind mounting and rolling system|
    US20110005694A1|2009-07-07|2011-01-13|Philip Ng|Adjustable Spring Assist for Window Coverings and Awnings|
    法律状态:
    2016-10-27| MK1| Application lapsed section 142(2)(a) - no request for examination in relevant period|
    2016-11-03| NB| Applications allowed - extensions of time section 223(2)|Free format text: THE TIME IN WHICH TO REQUEST EXAMINATION HAS BEEN EXTENDED TO 02 NOV 2016 |
    2018-11-01| FGA| Letters patent sealed or granted (standard patent)|
    优先权:
    申请号 | 申请日 | 专利标题
    AU2012903775||2012-08-31||
    AU2012903775A|AU2012903775A0||2012-08-31|Roller blind tensioning mechanism|
    AU2013901023||2013-03-25||
    AU2013901023A|AU2013901023A0||2013-03-25|Roller blind tensioning apparatus|
    AU2013222032A|AU2013222032B2|2012-08-31|2013-09-02|Roller Blind Tensioning Apparatus|AU2013222032A| AU2013222032B2|2012-08-31|2013-09-02|Roller Blind Tensioning Apparatus|
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