ROOM DARKENING CURTAIN RODS
Window curtain tension rod assemblies that include a telescoping rod and two bracket assemblies each including a support arm and a mounting bracket are disclosed. Each support arm may include a first end receiving an end of the curtain rod, a second end, and a U-shaped section between the first and second ends. The mounting bracket may be attached to the second end, and include a contact pad for engaging an interior sidewall of a window frame. The U-shaped section provides a curtain overlap region when a curtain is drawn onto the U-shaped section of the support arm from the curtain rod. At least one of the bracket assemblies may include a tension adjusting mechanism to move an end of the curtain rod away from the bracket assembly to thereby force the mounting bracket against the sidewalls of the window frame.
This application claims the benefit of U.S. Provisional Patent Application Ser. No. 62/220,032, filed on Sep. 17, 2015, which is incorporated herein by reference.
FIELD OF THE INVENTIONThis invention relates to window curtain tension rods, and more particularly relates to curtain tension rod assemblies that are capable of holding relatively heavy curtains and room darkening curtains.
BACKGROUND INFORMATIONConventional window curtain tension rods are clumsy to put up, requiring many rotations to twist them to the desired length. Further, once they are installed, conventional window curtain tension rods are often unable to hold curtains other than light-weight curtains, draperies or sheers without falling. For certain applications, the inability to use heavier room darkening curtains with conventional window curtain tension rods is a significant issue and a deterrent to installation. When installed, the mounting brackets of conventional window curtain tension rods remain uncovered by the window curtain. Conventional window curtain tension rods only extend between the interior window surfaces, such an arrangement leaves a gap between the edges of the window curtain and the window casement. The gap allows light to enter the room.
It would be desirable to overcome the inability of conventional window curtain tension rods to allow window curtain overlap, support heavier room darkening curtains, and hide the mounting brackets.
SUMMARY OF THE INVENTIONWindow curtain tension rod assemblies including bracket assemblies with support arms and mounting brackets are provided. Each support arm may include a first end receiving an end of the curtain rod, a second end, and a U-shaped section between the first and second ends. The mounting bracket may be attached to the second end and include a contact pad for engaging an interior sidewall of a window frame. The U-shaped section provides a curtain overlap region when a curtain is drawn onto the U-shaped sections of the support arms from the curtain rod. At least one of the bracket assemblies may include a tension adjusting mechanism to move an end of the curtain rod away from the bracket assembly to thereby force the mounting brackets against the sidewalls of the window frame.
An aspect of the present invention is to provide a window curtain tension rod assembly comprising a telescoping curtain rod comprising a first rod section and a second rod section axially moveable and lockable with respect to each other along an axis of the telescoping curtain rod, a first bracket assembly, and a second bracket assembly. The first bracket assembly comprises a first support arm including a first end receiving an end of the first rod section, a second end, and a U-shaped section between the first and second ends, and a first mounting bracket attached to the second end of the first support arm including a contact pad structured and arranged to engage an interior sidewall of a window frame, wherein a portion of the U-shaped section extends laterally away from the first mounting bracket in a direction substantially parallel with the axis of the telescoping curtain rod to a first overlap length, and another portion of the U-shaped section extends laterally away from the first mounting bracket in a direction perpendicular to the axis of the telescoping curtain rod to a first depth to thereby provide a first curtain overlap region when a curtain is drawn onto the U-shaped section of the first support arm from the first rod section. The second bracket assembly comprises a second support arm including a first end receiving an end of the first rod section, a second end, and a U-shaped section between the first and second ends, and a second mounting bracket attached to the second end of the second support arm including a contact pad structured and arranged to engage another interior sidewall of the window frame, wherein a portion of the U-shaped section extends laterally away from the second mounting bracket in a direction parallel with the axis of the telescoping curtain rod to a second overlap length, and another portion of the U-shaped section extends laterally away from the second mounting bracket in a direction perpendicular to the axis of the telescoping curtain rod to a second depth to thereby provide a second curtain overlap region when the curtain is drawn onto the U-shaped section of the second support arm from the second rod section.
Another aspect of the present invention is to provide a bracket assembly for a window curtain tension rod comprising a support arm comprising a first end structured and arranged to receive an end of a curtain rod, a second end, a substantially straight section extending from the first end defining an axial direction, and a U-shaped section extending from the second end to the substantially straight section, and a mounting bracket attached to the second end of the support arm comprising a sidewall leg structured and arranged to engage an interior sidewall of a window frame and a front wall leg structured and arranged to engage a front wall of the window frame, wherein a portion of the U-shaped section of the support arm extends laterally away from the mounting bracket in a direction parallel with an axial direction of the substantially straight section of the support arm to an overlap length, and another portion of the U-shaped section extends laterally away from the mounting bracket in a direction perpendicular to the axial direction of the substantially straight section to a depth to thereby provide a curtain overlap region when a curtain is drawn onto the U-shaped section of the first bracket assembly from the substantially straight section.
A further aspect of the present invention is to provide a method of mounting a window curtain tension rod assembly as described above onto a window frame. The method comprises positioning the mounting bracket of the first bracket assembly against an interior sidewall of a window frame, positioning the mounting bracket of the second bracket assembly against an opposite interior sidewall of the window frame, axially locking the first and second rod sections together, and tightening a tension adjusting mechanism to extend the end of the first or second rod section from the support arm to thereby force the mounting brackets of the first and second bracket assemblies against the interior sidewalls of the window frame, the tension adjusting mechanism comprising a threaded tension adjuster bolt axially aligned with and rotatable around the axis of the telescoping curtain rod, and the threaded tension adjuster bolt comprises external threads threadingly engaged with internal threads located at the end of the first or second rod sections.
These and other aspects of the present invention will be more apparent from the following description.
The present invention provides window curtain tension rod assemblies that provide curtain overlap regions when a curtain is drawn onto the bracket assembly from the curtain rod. The curtain overlap regions prevent light from escaping into the room and allow the mounting brackets to be hidden. In another aspect, the window curtain tension rod assemblies may stay in place when used with heavy panels designed to block out light. Further, if a person wishes to move the window curtain tension rod assembly, it can be done easily and without damage to the window frame or window opening walls. The described embodiments provide window curtain tension rod assemblies that use tension forces to mount the rod in the window opening. No screws or glue are necessary. The curtain may be of any known design and may typically comprise two curtain panels that may each be drawn onto one of the bracket assemblies of the present invention to provide a room darkening effect. However, other types of curtains including single panel curtains may be used.
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When attached to the support arm 21, the sidewall leg 42 has a planar surface that is non-parallel with the axial direction of the telescoping curtain rod 12 and/or the axial direction of the substantially straight rod receiving tube section 24 of the support arm 21. In accordance with an embodiment of the present invention, this arrangement provides that the normal direction of the planar surface of the sidewall leg 42 is non-parallel with the axial direction of the telescoping curtain rod 12 and the substantially straight rod receiving tube section 24 of the support arm 21. In certain embodiments, the bracket angle A, which represents the angle the normal direction of the planar surface of the sidewall leg and is disposed measured in a horizontal plane, may typically range from 1° to 30°, for example, from 5° to 20° or from 10° to 15°. In a particular embodiment, the bracket angle A may be about 12.5°. In accordance with an embodiment of the present invention, the front wall leg 44 of the mounting bracket 40 may comprise a planar surface that is perpendicular to the planar surface of the sidewall leg 42.
In accordance with certain embodiments of the present invention, the mounting bracket 40 may be rigidly attached to the bracket mounting surface 30 of the bracket mounting second end 26 of the support arm 21. Alternatively, as shown in
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In accordance with certain embodiments of the present invention, the threaded tension adjuster bolt 70 may be positioned in the support arm 21 to be axially aligned and rotatable around the axis of the telescoping curtain rod 12 and the axis of the substantially straight rod receiving tube section 24. The threaded tension adjuster bolt 70 may be inserted into the substantially straight rod receiving tube section 24 through the rod receiving opening 23. The annular flange 74 is then positioned substantially adjacent to the radially inwardly projecting shoulder 64. The adjusting cap 80 is inserted into the tension tool hole 62 and the stud-retaining recess 82 may be glued onto the anti-rotation stud 76. In accordance with an embodiment of the present invention, the radially inwardly projecting collar 64, the annular flange 74 and the adjusting cap 80 allow the threaded tension adjuster bolt 70 to rotate within the tube section but prevent the threaded tension adjuster bolt 70 from moving in an axial direction with respect to the substantially straight rod receiving tube section 24.
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In accordance with an embodiment of the present invention, both the first and second bracket assemblies 20 and 120 may include a tension adjusting mechanism at a location within the straight rod receiving tube sections 24 and 124 to extend the telescoping curtain rod 12 in the axial direction T away from the bracket assemblies 20 and 120, which forces the mounting brackets 40 and 140 against the interior sidewalls 4 of the window frame 2 with an outward force F. However, any other suitable location of the tension adjusting mechanism may be used, e.g., inside another section of the support arms 21 and 121, or outside of the support arms 21 and 121. As shown in
To install the window curtain tension rod assembly 10, the first bracket assembly 20 is attached to the end 15 of the first rod section 14 and the second bracket assembly 20 is attached to the end 17 of the second rod section 16. The end 15 first rod section 14 is extended axially away from end 17 of the second rod section 16, until the mounting brackets 40 and 140 are positioned adjacent to the opposing interior surfaces 4 of the window frame 2. The sidewall legs 42 and 142 of the mounting brackets 40 and 140 are positioned to make contact with the opposing interior sidewalls 4 of the window frame 2. Then the first and second rod sections are rotated with respect to each other to lock the axial position of the first and second rod sections 14 and 16 with respect to each other. Then the tension adjusting mechanism 60 included in at least one of the support arms 21 and 121 to extend the end of the first rod section 14 from the support arm 21. Because the support arms 21 and 121 are rigidly attached to the mounting brackets 40 and 140 and rigidly attached to first and second rod sections 14 and 16, the movement of the first rod section 14 in axial direction T away from the support arm 21 places an outward force F on the mounting brackets 40 and 140. This outward force F is applied by the mounting brackets 40 and 140 against the interior sidewalls 4 of the window frame 2, to thereby secure the window curtain tension rod assembly 10 to the window frame 2. Since the end 15 of the first rod section 14 and the end 17 of the second rod section 16 extend into substantially straight rod receiving tube sections 24 and 124, and the inner diameter of the substantially straight rod receiving tube sections 24 and 124 are close to the outer diameter of the ends of the first and second rod sections that extend into the substantially straight rod receiving tube sections, when the rod section is extended in axial direction T, movement of the bracket assemblies 20 and 120 with respect to the telescoping rod is limited to the axial direction. Thus, the mounting brackets 40 and 140 are forced against the interior sidewalls 4 of the window frame 2 with an outward force F. In accordance with an embodiment of the present invention, movement of the telescoping rod 12 in any direction other than axially along the tubes is prevented by the straight rod receiving tube sections 24 and 124. This arrangement eliminates the need for any additional means for attaching the mounting brackets to the interior sidewalls of the window frame.
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In accordance with an embodiment of the present invention, the U-shaped sections 28 and 128 of the support arms 21 and 121 are shaped to extend laterally away from the mounting brackets 40 and 140 in a direction parallel with the axial direction of the telescoping curtain rod 12 to an overlap length L. The U-shaped sections 28 and 128 are also shaped to extend laterally away from the mounting brackets 40 and 140 in a direction perpendicular to the axial direction of the telescoping curtain rod 12 to a depth D. The U-shaped sections 28 and 128 thus include a component parallel with the axial direction of the telescoping curtain rod 12, and a component perpendicular to an axial direction of the telescoping curtain rod 12. In accordance with an embodiment of the present invention, such parallel and perpendicular portions of the U-shaped sections 28 and 128 provide curtain overlap regions 9 as shown in
An additional feature of the U-shaped sections 28 and 128 of the bracket assemblies 20 and 120 is that they function to allow the curtain 8 to hide the bracket assemblies 20 and 120, as shown by comparing
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The telescoping curtain rods, mounting brackets, support arms and fasteners may be made from any suitable materials such as plastics, metals and the like. For example, the telescoping curtain rods, mounting brackets and adjusting cap may be made of metal such as aluminum and/or steel. The support arms, threaded tension adjuster bolt and internally threaded sleeve may be made of metals or polymeric materials such as polyethylene, polypropylene and the like.
Whereas particular embodiments of this invention have been described above for purposes of illustration, it will be evident to those skilled in the art that numerous variations of the details of the present invention may be made without departing from the invention as defined in the appended claims.
Claims
1. A window curtain tension rod assembly comprising:
- a telescoping curtain rod comprising a first rod section and a second rod section axially moveable and lockable with respect to each other along an axis of the telescoping curtain rod;
- a first bracket assembly comprising: a first support arm including a first end receiving an end of the first rod section, a second end, and a U-shaped section between the first and second ends; and a first mounting bracket attached to the second end of the first support arm including a contact pad structured and arranged to engage an interior sidewall of a window frame, wherein a portion of the U-shaped section extends laterally away from the first mounting bracket in a direction parallel with the axis of the telescoping curtain rod to a first overlap length, and another portion of the U-shaped section extends laterally away from the first mounting bracket in a direction perpendicular to the axis of the telescoping curtain rod to a first depth to thereby provide a first curtain overlap region when a curtain is drawn onto the U-shaped section of the first support arm from the first rod section; and
- a second bracket assembly comprising: a second support arm including a first end receiving an end of the first rod section, a second end, and a U-shaped section between the first and second ends; and a second mounting bracket attached to the second end of the second support arm including a contact pad structured and arranged to engage another interior sidewall of the window frame, wherein a portion of the U-shaped section extends laterally away from the second mounting bracket in a direction parallel with the axis of the telescoping curtain rod to a second overlap length, and another portion of the U-shaped section extends laterally away from the second mounting bracket in a direction perpendicular to the axis of the telescoping curtain rod to a second depth to thereby provide a second curtain overlap region when the curtain is drawn onto the U-shaped section of the second support arm from the second rod section.
2. The window curtain tension rod assembly of claim 1, wherein the first support arm further comprises a substantially straight tube section between the first end and the U-shaped section that is axially aligned with the telescoping curtain rod, and the second support arm further comprises a substantially straight tube section between the first end and the U-shaped section that is axially aligned with the telescoping curtain rod.
3. The window curtain tension rod assembly of claim 1, wherein the first and second overlap lengths are from 1 to 3 inches and the first and second depths are from 2 to 4 inches.
4. The window curtain tension rod assembly of claim 1, wherein a ratio of the first overlap length to the first depth is from 1:1 to 3:1, and a ratio of the second overlap length to the second depth is from 1:1 to 3:1.
5. The window curtain tension rod assembly of claim 1, wherein the first mounting bracket comprises a sidewall leg, the contact pad of the first mounting bracket is attached to the sidewall leg of the first mounting bracket, the second mounting bracket comprises a sidewall leg, and the contact pad of the second mounting bracket is attached to the sidewall leg of the second mounting bracket.
6. The window curtain tension rod assembly of claim 5, wherein the sidewall leg of the first mounting bracket comprises a planar surface that is non-parallel with the axis of the telescoping curtain rod, and the sidewall leg of the second mounting bracket comprises a planar surface that is non-parallel with the axis of the telescoping curtain rod.
7. The window curtain tension rod assembly of claim 5, wherein the sidewall leg of the first mounting bracket comprises a planar surface defining a normal direction that is non-parallel with the axis of the telescoping curtain rod, and the sidewall leg of the second mounting bracket comprises a planar surface defining a normal direction that is non-parallel with the axis of the telescoping curtain rod.
8. The window curtain tension rod assembly of claim 7, wherein the normal direction of the planar surface of the sidewall leg of the first mounting bracket is disposed at a first bracket angle measured in a horizontal plane, and the normal direction of the planar surface of the sidewall leg of the second mounting bracket is disposed at a second bracket angle measured in a horizontal plane.
9. The window curtain tension rod assembly of claim 8, wherein the first and second bracket angles are from 5 to 20°.
10. The window curtain tension rod assembly of claim 1, wherein at least one of the first and second bracket assemblies comprises a tension adjusting mechanism structured and arranged to extend the end of the first or second rod sections from the first end of the first or second support arm.
11. The window curtain tension rod assembly of claim 10, wherein the tension adjusting mechanism comprises a threaded tension adjuster bolt axially aligned with and rotatable around the axis of the telescoping curtain rod, and the threaded tension adjuster bolt comprises external threads threadingly engaged with internal threads located at the end of the first or second rod sections.
12. The window curtain tension rod assembly of claim 11, wherein the tension adjusting mechanism comprises a radially inwardly projecting collar engaged with the threaded tension adjuster bolt for substantially preventing axial movement of the threaded tension adjuster bolt in relation to the first or second support arm, when the threaded tension adjuster bolt is rotated.
13. The window curtain tension rod assembly of claim 1, wherein the first mounting bracket is pivotally mounted on the second end of the first support arm, and the second mounting bracket is pivotally mounted on the second end of the second support arm.
14. The window curtain tension rod assembly of claim 1, wherein the first mounting bracket further comprises a front wall leg structured and arranged to engage a front wall of the window frame, and the second mounting bracket further comprises a front wall leg structured and arranged to engage the front wall of the window frame.
15. The window curtain tension rod assembly of claim 14, wherein the front wall leg of the first mounting bracket comprises a substantially planar surface that is substantially perpendicular to a planar surface of the sidewall leg of the first mounting bracket, and the front wall leg of the second mounting bracket comprises a substantially planar surface that is substantially perpendicular to a planar surface of the sidewall leg of the second mounting bracket.
16. The window curtain tension rod assembly of claim 14, wherein the sidewall leg and the front wall leg of the first mounting bracket further comprise a resilient pad, and the sidewall leg and the front wall leg of the second mounting bracket further comprise a resilient pad.
17. The window curtain tension rod assembly of claim 14, wherein the second end of the first support arm comprises a planar surface engaging a planar surface of the front wall leg of the first mounting bracket, and the second end of the second support arm comprises a planar surface engaging a planar surface of the front wall leg of the second mounting bracket.
18. The window curtain tension rod assembly of claim 1, wherein the U-shaped section of the first support arm includes an upwardly open recess, and the U-shaped section of the second support arm includes an upwardly open recess.
19. A bracket assembly for a window curtain tension rod comprising:
- a support arm comprising a first end structured and arranged to receive an end of a curtain rod, a second end, a substantially straight section extending from the first end defining an axial direction, and a U-shaped section extending from the second end to the substantially straight section; and
- a mounting bracket attached to the second end of the support arm comprising a sidewall leg structured and arranged to engage an interior sidewall of a window frame and a front wall leg structured and arranged to engage a front wall of the window frame, wherein a portion of the U-shaped section of the support arm extends laterally away from the mounting bracket in a direction parallel with the axial direction of the substantially straight section of the support arm to an overlap length, and another portion of the U-shaped section extends laterally away from the mounting bracket in a direction perpendicular to the axial direction of the substantially straight section to a depth to thereby provide a curtain overlap region when a curtain is drawn onto the U-shaped section of the first bracket assembly from the substantially straight section.
20. The bracket assembly of claim 21, further comprising a tension adjusting mechanism at least partially in the substantially straight section comprising a threaded tension adjuster bolt axially aligned with and rotatable around the axis of the substantially straight section, a radially inwardly projecting collar engaged with the threaded tension adjuster bolt for substantially preventing axial movement of the threaded tension adjuster bolt in relation to the substantially straight portion, and the threaded tension adjuster bolt comprises external threads threadingly engaged with internal threads located at an end of a curtain rod to extend the curtain rod in the axial direction in relation to the support arm.
21. A method of mounting a window curtain tension rod assembly of claim 1 onto a window frame, the method comprising:
- positioning the mounting bracket of the first bracket assembly against an interior sidewall of a window frame;
- positioning the mounting bracket of the second bracket assembly against an opposite interior sidewall of the window frame;
- axially locking the first and second rod sections together; and
- tightening a tension adjusting mechanism to extend the end of the first or second rod section from the support arm to thereby force the mounting brackets of the first and second bracket assemblies against the interior sidewalls of the window frame, the tension adjusting mechanism comprising a threaded tension adjuster bolt axially aligned with and rotatable around the axis of the telescoping curtain rod, and the threaded tension adjuster bolt comprises external threads threadingly engaged with internal threads located at the end of the first or second rod sections.
Type: Application
Filed: Sep 15, 2016
Publication Date: Mar 23, 2017
Inventor: David Harry Engell (Stamford, CT)
Application Number: 15/266,870