The following invention relates to artificial trees and particularly artificial Christmas trees which can be collapsed and stored when not in use and deployed when intended to be used. More particularly, this invention relates to collapsible Christmas trees which collapse by rotation of one portion of the Christmas tree relative to a second portion of the Christmas tree, and associated bags to cover such trees when not in use.
When decorating a space, it is often desirable to include trees as part of such decorations. To allow such decorations to last substantially indefinitely without maintenance and allow for repeated cycles of storage and deployment of such decorations, it is desirable to provide artificial trees rather than live trees. An example of such decorations are Christmas trees typically deployed during holiday seasons occurring at the end of each calendar year.
Such artificial Christmas trees are often configured to be collapsible so that they take up a minimum of space during initial shipping and inventory before being sold, and also to allow the user to store the Christmas tree when not in use in a relatively small space and protected from damage. Some such collapsible Christmas trees or other trees have limbs which are removably attached from a central trunk. The limbs typically include further branches which extend from the limbs which can be formed of wire or other materials with the limbs formed of wood, steel or other relatively rigid materials and the central trunk formed of wood, metal or other materials that are substantially rigid and strong enough to handle the loads encountered by carrying the limbs. Typically, needles of an artificial nature are fastened by wire, adhesive or otherwise to the branches extending from the limbs or directly to the limbs themselves.
In some cases lighting is permanently fixed to the limbs, such as with lights coupled to cords and with the cords plugging into a central cord running up the trunk. With other collapsible Christmas trees the limbs are not removed from the trunk but rather pivot from a stored orientation to a deployed orientation. With such trees the deployed orientation is generally perpendicular to the trunk and the stored orientation is somewhere between 45° pivoted away from horizontal to a substantially vertical orientation parallel to the trunk.
While such pivotable limbs on Christmas trees have the benefit of avoiding the requirement that the limbs be attached to the central trunk, difficulty is encountered in transitioning the limbs from a collapsed orientation to a deployed orientation. Either the limb reorienting process is highly labor intensive as each limb is adjustably positioned, or if deployed by reorienting the trunk, requires that the entire tree be picked up and reoriented in various different ways.
This tree reorienting procedure is a particularly difficult maneuver in that the tree must be held away from the body of the individual before rotation. Many individuals lack the strength, arm length and dexterity to perform such a maneuver. For others, such a maneuver is dangerous to perform, presenting the possibility of injury or damage to the user or the tree. Accordingly, a need exists for a Christmas tree or other artificial tree which can be easily reconfigured from a collapsed configuration to a deployed configuration with a minimum of strength or dexterity being required for such tree deployment.
With this invention an artificial Christmas tree is provided which can be readily inverted and which has limbs pivotably attached to a central trunk for automatic deployment of the limbs of the Christmas tree upon such inversion of the Christmas tree. To facilitate such inversion, the trunk includes at least two trunk portions including a first trunk portion adapted to be supported above a floor and at least one second trunk portion pivotably attached to the first trunk portion, at least indirectly, through at least one pivot joint. The first trunk portion extends from a lower end to an upper end with the pivot joint located closer to the upper end than to the lower end and typically adjacent the upper end.
The at least one second trunk portion has a portion thereof between a first end and a second end of the second trunk portion pivotably attached at least indirectly through the pivot joint to the first trunk portion. This pivot joint allows the at least one second trunk portion to pivot substantially 180° from a collapsed orientation extending substantially vertically to a deployed orientation extending substantially vertically, but with the first and second ends having swapped. In particular, in a collapsed orientation the first end is above the second end. In the deployed orientation the second end of the second trunk portion is above the first end.
The limbs are pivotably attached to the at least one second trunk portion. These limbs pivot between a perpendicular orientation and a collapsed orientation pivoting toward the second end of the second trunk portion somewhat away from the deployed position. Such pivoting can occur by gravity or through manual movement of the limbs. If by gravity alone, merely rotating the second trunk portion about the pivot joint between the collapsed orientation and the deployed orientation allows the limbs to pivot from their collapsed position to their deployed substantially perpendicular to the second trunk portion position. Thus, in a simplest embodiment of the invention, all one need do is invert the second trunk portion 180° while the entire weight of the second trunk portion is supported by the first trunk portion resting upon a floor or other underlying surface.
A clasp is preferably provided to selectively secure the at least one second trunk portion in the deployed orientation (and optionally also in the stored orientation) to avoid inadvertently inverting the at least one second trunk portion after deployment thereof. Lights preferably run up the first trunk portion then transition to the second trunk portion at the pivot joint and then toward each end of the second trunk portion and out at least some of the limbs, to provide lights for the Christmas tree or other artificial tree.
A wheeled base is optionally provided to further facilitate deployment of the artificial tree where desired. A top cap is preferably removably attachable to the second end of the second trunk portion to provide an uppermost portion of the tree. This uppermost portion can also include lights thereon with an appropriate plug to provide electrical connection when the cap is coupled to the second end at the top of the deployed at least one second trunk portion of the deployed Christmas tree.
Accordingly, a primary object of the present invention is to provide an artificial tree which can be easily transitioned from a collapsed orientation to a deployed orientation.
Another object of the present invention is to provide a Christmas tree which is easy to store in a collapsed form and easy to deploy when to be used.
Another object of the present invention is to provide a Christmas tree which can be transitioned from a collapsed form to a deployed form without requiring high strength or dexterity.
Another object of the present invention is to provide a Christmas tree which can be transitioned between a collapsed and a deployed configuration without damage to the Christmas tree.
Another object of the present invention is to provide a Christmas tree which can be readily transitioned between a collapsed and a deployed position with lights associated with the Christmas tree remaining coupled to various different portions of the Christmas tree both in the collapsed and the deployed configuration.
Another object of the present invention is to provide a Christmas tree which can be set up quickly.
Another object of the present invention is to provide a method for transitioning an artificial Christmas tree from a collapsed configuration to a deployed configuration.
Another object of the present invention is to provide an artificial tree which can be inverted between an upside down storage position and a right side up deployed position.
Another object of the present invention is to provide a cover for an artificial Christmas tree that can be inverted with the Christmas tree during set-up of the tree.
Another object of the present invention is to provide an artificial tree with one fixed trunk portion extending up from a base on the ground and multiple rotating trunk portions that rotate at least somewhat independently to provide multiple levels of a large artificial tree when rotated into a deployed position.
Other further objects of the present invention will become apparent from a careful reading of the included drawing figures, the claims and detailed description of the invention.
Referring to the drawings, wherein like reference numerals represent like parts throughout the various drawing figures, reference numeral 10 is directed to an invertible Christmas tree or other artificial tree. The tree 10 is invertible (
In essence, and with particular reference to
Limbs 50 extend laterally from the rotating trunk 40. Preferably, these limbs 50 are pivotably connected to the rotating trunk 40 so that the limbs 50 can pivot relative to the trunk between an approximately perpendicular deployed orientation and a collapsed orientation which pivots toward the trunk. Thus, the limbs 50 extend substantially horizontally when the rotating trunk 40 is in a final position for deployment of the limbs 50, and the limbs 50 pivot toward the rotating trunk 40 when the rotating trunk 40 is rotated to a stored position (
More specifically, and with initial reference to
With particular reference to
The base 20 includes a plate 22 which is preferably circular or square in form and oriented generally horizontally. A pedestal 24 extends vertically upward from a central portion of the plate 22. The pedestal 24 is configured to be fixedly attached to the fixed trunk 30 with the fixed trunk 30 preferably extending vertically upward from the pedestal 24.
Lateral portions of the plate 22 support joints 25. These joints 25 preferably have legs 26 pivotably attached to the plate 22 therethrough. Thus, the joints 25 allow the legs 26 to pivot relative to the plate 22 (about arrow B of
With such a configuration, the base 20 can have a deployed configuration with the legs 26 extending radially outwardly for maximum stability, but the legs 26 can be pivoted inwardly (arrow B) to provide a lesser width and to allow the lid 4 to be closed over the base 20 and to completely enclose the invertible Christmas tree 10 within the cover 2 when desired (
While the base 20 shown herein is described according to this preferred embodiment, other bases 20 could also be utilized. For instance, the base 20 could merely be a fixed structure having sufficient width to resist tipping of the invertible Christmas tree 10. Also, the base 2 could merely be a hole in an underlying floor into which the fixed trunk 30 of the invertible Christmas tree 10 would be removably mounted. Other forms of Christmas tree stands could also be utilized to support the fixed trunk 30 and dispense with the base 20 altogether.
With continuing reference to
The fixed trunk 30 preferably has a height substantially half of that of the invertible Christmas tree 10. The fixed trunk 30 is elongate in form and can be configured such as in a solid cylindrical form or in the form of a cylindrical tube. The fixed trunk 30 is formed of substantially rigid material and carries loads of the invertible Christmas tree 10 upon the base 20 or other underlying surface.
The fixed trunk 30 includes a lower end 32 opposite an upper end 34. A clasp 33 is provided near the lower end 32. This clasp 33 is configured to be removably attached to a portion of the rotating trunk 40 to secure the rotating trunk 40 in either the stored configuration (
The upper end 34 of the fixed trunk 30 includes a pivot 36 adjacent thereto. This pivot 36 can be as simple as a hole passing laterally through the fixed trunk 30 with an axle 37 passing through this hole. In the embodiment depicted in
The rotating trunk 40 has a diameter similar to that of the fixed trunk 30 and the axle 37 passes through both the fixed trunk 30 and the rotating trunk 40 with the rotating trunk 40 alignable parallel with the fixed trunk 30 but just slightly offset laterally from the fixed trunk 30 so that the rotating trunk 40 can rotate freely relative to the fixed trunk 30. If desired, the fixed trunk 30 can be spaced slightly away from a center of mass of the invertible Christmas tree 10 so that the rotating trunk 40 can have its center of mass more closely aligned with the center of mass of the overall invertible Christmas tree 10 for maximum stability.
While the embodiment of
In
With continuing reference to
This rotating trunk 40 has a first end 42 opposite a second end 44 (
A core 46 passing through an interior of the rotating trunk 40 is preferably hollow. Such a hollow core 46 minimizes weight of the rotating trunk 40 while maintaining strength for the rotating trunk 40 and also optionally provides a pathway through which electric equipment for the lights 70 can be routed. Slots 48 (
The rotating trunk 40 preferably has a center point or a point near the center point of the rotating trunk 40 which is pivotably attached (at least indirectly, and in this embodiment directly) to the fixed trunk 30 through the pivot 36. This midpoint is also preferably a center of mass of the rotating trunk 40. Thus, the rotating trunk 40 can be freely rotated 180° to move the first end 42 from directly above the second end 44 and directly above the fixed trunk 30, to a second position with the first end 42 adjacent the fixed trunk 30 and directly below the second end 44; with a center of mass of the rotating trunk 40 always remaining substantially aligned with the fixed trunk 30. Thus, the rotating trunk 40 can be “spun” without causing instability in the invertible Christmas tree 10 resting upon the base 20 or other support above a floor. Preferably, near each end 42, 44 of the rotating trunk 40 holes are provided which can interface with the clasp 33, so that the rotating trunk 40 can be secured to the fixed trunk 30 in both the collapsed configuration and the deployed configuration.
With particular reference to
Most preferably, this collapsed angle for the limbs 50 is 70° away from the deployed configuration for the limbs 50. Such rotation of the limbs 50 is depicted by arrow E (
Each of the limbs 50 is preferably an elongate rigid structure with a plurality of such limbs 50 radiating from the rotating trunk 40. Most preferably, the limbs 50 extend in many different directions radially from the rotating trunk 40 (
In the embodiment of
Branches 60 optionally but preferably radiate from the limbs 50 in a pattern which mimics at least some natural tree or otherwise has a desirable form. Typically, needles 52 also extend from the branches 60. These needles 62 can be actual natural needles such as pine needles, but most typically are synthetic structures such as attached by wire or adhesive to the branches 60. It is also conceivable that needles 62 can also be directly attached to the limbs 50. The branches 60 can have a generally planar form such as might exist on a noble fir, or might have a more bushy cylindrical form which might be provided on many different types of pines. Needles 62 can also be long or short depending on the design characteristics desired for the invertible Christmas tree 10.
With particular reference to
As these cords pass the limbs 50, the cords are routed out the limbs 50 and terminate at various different locations with lights 70. Various different controllers can be provided and various different lights can be provided if desired so that a variety of different light displays can be provided through the lights 70. The cord 72 can be routed through an interior of the fixed trunk 30 and through an interior of the rotating trunk 40 (and also conceivable through an interior of the limbs 50). Perhaps in a simplest form of the invention, the cord 72 can merely be wrapped around an exterior of the fixed trunk 30 and an exterior of the rotating trunk 40. The cord 72 can be camouflaged to have a color similar to that of the fixed trunk 30, rotating trunk 40 and limbs 50 (i.e. green) to help hide the cords 72.
With particular reference to
Top limbs 84 radiate from the top trunk 82 with a configuration similar to the limbs 50. A bottom end 83 of the cap 80 is sized to fit inside the port 45 for secure but removable attachment of the cap 80 to the rotating trunk 40. Lowermost portions of the cap 80 typically have a diameter similar to that of the invertible Christmas tree 10 when the limbs 50 are in their collapsed configuration (
Also, most preferably a plug is provided and lights are provided on the cap 80 with the plug attachable to a plug in the second end 44 of the rotating trunk 40 so that the lights 70 on the cap 80 can be coupled to lights 70 on the rotating trunk 40 so that all of the lights 70 on the invertible Christmas tree 10 can be simultaneously powered from a single power receptacle P. Attachment of the cap 80 to the rotating trunk 40 is depicted along arrow D of
With particular reference to
Also, a releasable fastener 250 is shown for securing the rotating trunk 240 to the fixed trunk 230 both when in the deployed orientation and in the stored orientation. This releasable fastener 250 would typically have two sides which are similarly configured to grip either the upper portion 244 of the rotating trunk 240 or the lower portion 242 of the rotating trunk 240. The fastener 250 could, in one embodiment, be a pair of similar “C-shaped” clamps formed of a resilient material to releasably hold the rotating trunk 40 in one of the two pairs of clamps.
In this alternative Christmas tree 210, the rotating trunk 240 is shown with an asymmetrical configuration with the upper portion 244 longer than the lower portion 242. In such a configuration the joint 236 can be spaced away from a center of mass of the rotating trunk 240, or the positioning of limbs of different lengths and weights on the two portions 242, 244 can be provided so that the rotating trunk 240 is still balanced about the joint 236.
With the alternative Christmas tree 210, the rotating trunk 240 is shown displaced laterally relative to the fixed trunk 230 slightly when the rotating trunk 240 has been rotated to the deployed configuration. Similarly, when the rotating trunk 240 is rotated to the stored position, the rotating trunk 240 is also slightly displaced laterally from the fixed trunk 230, but on an opposite side of the fixed trunk 230. With this alternative embodiment Christmas tree 210, such an offsetting of the rotating trunk 240 from the fixed trunk 230 is merely accepted as part of the design of the alternative Christmas tree 210 and the base 220 (
Alternatively, limbs and branches can be configured with a slightly greater length on one side than on the other side to balance the alternative Christmas tree 210 laterally even though the rotating trunk 240 is offset laterally relative to the fixed trunk 230 somewhat. As another alternative, the fixed trunk 230 could be attached to the base 220 (
A further alternative Christmas tree 310 is depicted in
Uniquely with the further alternative embodiment Christmas tree 310, the fixed trunk 330 is configured to include three separate parts: an upper part 332, a lower part 334 and a bend 336 between the upper part 332 and the lower part 334. This bend 336 includes upper and lower curves so that the upper part 332 and lower part 334 remain parallel to each other but are offset laterally relative to each other an amount similar to the lateral offset provided by the joint 236. In this way, the rotating trunk 340 is aligned with the lower part 334 of the fixed trunk 330 when the rotating trunk 340 is in the deployed configuration. The releasable fastener 250 is coupled to the upper part 332 and is similar to the releasable fastener 250 provided with the Christmas tree 210 (
When the rotating trunk 340 is rotated to the stored position, in this embodiment a somewhat less balanced configuration would result, or the base 20 could be appropriately modified to provide stability both when the further alternative Christmas tree 310 is in the deployed configuration or in the stored configuration. Other techniques for balancing the further alternative Christmas tree 310 when in the stored configuration could also be resorted to, including adding masses to portions of the tree 310 when in the stored configuration to achieve balance, or limiting rotation of some of the limbs coupled to the tree 310 so that balance is maintained when the limbs pivot because some of the limbs pivot more than other limbs. Also, it is conceivable that the cover 2 (
With particular reference to
The tree 410 is also shown coupled to the base 220 which would typically be similar for each of the embodiments of
The alternative trees 210,310,410 shown in
With particular reference to
The side panel 106 is generally cylindrical in form, except that the side panel 106 preferably has a slightly lesser diameter at a lower end than at an upper end adjacent the top panel 104. The side panel 106 is preferably open at a lower end and otherwise substantially continuous except where the gap 110 causes a break in the side panel 106 (
The gap 110 is somewhat in the form of a pie shaped cutout extending from upper to lower ends of the cover 102. This gap 110 is primarily defined by two substantially planar side walls 112 which almost face each other but preferably are angled slightly (perhaps 5° to 15°) away from each other. These side walls 112 are joined together at an inner joint 114 close to a central vertical axis of the cover 102. The gap 110 is configured so that it can fit between two adjacent limbs 50 (
The gap 110 provides clearance to allow the fixed trunk 30 of the Christmas tree 10 (
The inner joint 114 of the gap 110 includes an arch 116 which defines a break in the inner joint 114 so that the inner joint 114 only joins the side panels 112 on an upper half of the gap 110. A lower half of the inner joint 114 below the arch 116 is open between two inside edges of the side walls 112. This open portion of the inner joint 114 below the arch 116 is beneficial in facilitating removal of the cover 102 after completion of the rotation process (along arrow G of
To keep portions of the cover 102 within the gap 110 properly positioned in spite of this open portion of the inner joint 114 below the arch 116, inner corners 118 of the side walls 112 preferably include an inner fastener 120. This inner fastener 120 is initially wrapped around the fixed trunk 30 and coupled together to keep the inner corners 118 of the side walls 112 of the gap 110 positioned where desired and to resist any tendency of the cover 102 to rotate prematurely. When the cover 102 and included tree are to be rotated, this inner fastener 120 would typically be manipulated into a detached configuration to then allow free rotation of the cover 102 and included Christmas tree (along arrow F of
The alternative cover 102 is beneficial for larger trees, where a shorter user might have difficulty in lifting the cover 2 of the previous embodiment up off of the tree after rotation. With this alternative cover 102, the cover 102 is pulled down (along arrow G of
The alternative cover 102 includes a side pouch 140 sized to receive the cap 80 of the Christmas tree therein. An access opening 142 is provided, typically with a zipper thereon or other closure. The inside pouch 140 is sized sufficiently large to allow the cap portion of the Christmas tree to be replaceably positioned within the side pouch 140.
With particular reference to
The entire two pivot Christmas tree 510 rests upon a base 520 which consists essentially of a rigid frame 522 having various different elements to provide rigidity to the base 520. Wheels 528 support the base 520 above ground and allow for simple and easy rolling movement of the two pivot Christmas tree 510 to a desired position before transitioning of the Christmas tree 510 from its stored configuration (
The two pivot Christmas tree 510 includes four basic trunk portions including a fixed trunk 530, an intermediate rotating trunk 540, an upper rotating trunk 550 and a lower rotating trunk 560. The fixed trunk 530 is generally similar to the fixed trunk 30 of the Christmas tree 10 described in detail above. Specifically, in this embodiment the fixed trunk 530 includes a lower end 532 opposite an upper end 534 and is rigid and elongate in form extending vertically up from the base 520. Preferably, an offset 535 is formed in the fixed trunk 530 near the lower end 532 to assist in balancing the different portions of the two pivot Christmas tree 510 over a center point of the base 520.
The intermediate rotating trunk 540 is pivotably attached through a middle pivot 542 to the upper end 534 of the fixed trunk 530. This intermediate rotating trunk 540 is similar to the fixed trunk 530 in that it does not have limbs extending directly therefrom. The intermediate rotating trunk 540 is distinct from the fixed trunk 530 in that it is capable of rotating relative to the fixed trunk 530 at least 90° about the middle pivot 542.
The middle pivot 542 is preferably at a center of the intermediate rotating trunk 540 to maintain balance and thus simplicity of rotation of the intermediate rotating trunk 540. As an alternative, the middle pivot 542 could be placed at different locations along the intermediate rotating trunk 540. A clasp 543 is preferably provided as part of the middle pivot 542 which can secure the upper rotating trunk 550 and lower rotating trunk 560 in deployed configuration relative to the intermediate rotating trunk 540 after rotation thereof (along arrows H and I of
The intermediate rotating trunk 540 includes a high end 544 opposite a low end 546. In the stored position, each of these ends 544, 546 are at a common height as the intermediate rotating trunk 540 is configured to extend horizontally (
The upper rotating trunk 552 is pivotably coupled to the high end 544 of the intermediate rotating trunk 540. In particular, a middle pivot 552 is interposed between the high end 544 of the intermediate rotating trunk 540 and the upper rotating trunk 550 at a point between a first end 554 and a second end 556 of the upper rotating trunk 550. The first end 554 of the upper rotating trunk 550 is that portion of the upper rotating trunk 550 which is configured to have longer limbs than limbs extending from the second end 556. When completely deployed, the upper rotating trunk 550 defines a middle portion of the two pivot Christmas tree 510. The middle pivot 552 facilitates ninety degrees of rotation between the upper rotating trunk 550 and the intermediate rotating trunk 540.
The lower rotating trunk 560 is pivotably attached to the low end 546 of the intermediate rotating trunk 540. In particular, a middle pivot 562 is interposed between the low end 546 of the intermediate rotating trunk 540 and a portion of the lower rotating trunk 560 between a first end 564 and a second end 566 of the lower rotating trunk 560. The first end 564 of the lower rotating trunk 560 is configured to have limbs 570 which are longer than limbs 570 extending from the second end 566 of the lower rotating trunk 560. The middle pivot 562 facilitates ninety degrees of rotation between the lower rotating trunk 560 and the intermediate rotating trunk 540. After transition to the deployed configuration, the lower rotating trunk 560 defines a lowermost portion of the two pivot Christmas tree 510.
The limbs 570 are generally similar to those described above for various different alternative embodiments of the Christmas tree 10 (
A cap 580 is preferably provided which is attachable to the second end 556 of the upper rotating trunk 550 to define an uppermost portion of the two pivot Christmas tree 510. This cap 580 would typically be attached to the upper rotating trunk 150 after rotation of the upper rotating trunk 550 and lower rotating trunk 560 relative to the intermediate rotating trunk 540 (along arrows H and I of
As best seen in
In one embodiment, a final deployed Christmas tree (
When re-storage of the two pivot Christmas tree 510 is desired, the steps in deployment are reversed until the two pivot Christmas tree 510 has been transitioned again to its stored configuration (
The first upper trunk 642 includes a lower end 643 which is elevated in this orientation and an upper end 641 that is lowered in this orientation (
As depicted in
Note that the limbs 652, 654 are configured with branches extending therefrom. As with previous embodiments described above. With the limbs 652, 654 and branches in place the upper trunks 642-644 are obscured so that the tree does not appear to have a dual trunk character. Also, a cap would typically be provided with a single central trunk portion. This cap would attach to one of the upper ends 641,645 of the upper trunks 642, 644 or both.
In
This disclosure is provided to reveal a preferred embodiment of the invention and a best mode for practicing the invention. Having thus described the invention in this way, it should be apparent that various different modifications can be made to the preferred embodiment without departing from the scope and spirit of this invention disclosure. When structures are identified as a means to perform a function, the identification is intended to include all structures which can perform the function specified. When structures of this invention are identified as being coupled together, such language should be interpreted broadly to include the structures being coupled directly together or coupled together through intervening structures. Such coupling could be permanent or temporary and either in a rigid fashion or in a fashion which allows pivoting, sliding or other relative motion while still providing some form of attachment, unless specifically restricted.
This application is a continuation of U.S. patent application Ser. No. 16/840,007, filed on Apr. 3, 2020 (now U.S. Pat. No. 10,925,426), which is a continuation of U.S. patent application Ser. No. 15/881,199, filed Jan. 26, 2018 (now U.S. Pat. No. 10,638,866), which is a continuation of U.S. patent application Ser. No. 14/720,037, filed on May 22, 2015 (now U.S. Pat. No. 10,682,003), which is a continuation of U.S. application Ser. No. 13/545,283, filed on Jul. 10, 2012 (now U.S. Pat. No. 9,040,130), which claims benefit under Title 35, United States Code § 119(e) of U.S. Provisional Application No. 61/629,957 filed on Nov. 30, 2011. The above-identified U.S. application Ser. No. 13/545,283 also is a continuation-in-part of U.S. patent application Ser. No. 13/302,873, filed on Nov. 22, 2011 (now U.S. Pat. No. 8,993,077), which is a continuation of U.S. patent application Ser. No. 12/798,496, filed on Apr. 5, 2010 (now U.S. Pat. No. 8,062,718), which is a continuation-in-part of and claims priority from International Patent Application No. PCT/US2008/013587, filed on Dec. 10, 2008. This application incorporates by reference the contents of each of the above-identified applications in its entirety.
Number | Date | Country | |
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61629957 | Nov 2011 | US |
Number | Date | Country | |
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Parent | 16840007 | Apr 2020 | US |
Child | 17170249 | US | |
Parent | 15881199 | Jan 2018 | US |
Child | 16840007 | US | |
Parent | 14720037 | May 2015 | US |
Child | 15881199 | US | |
Parent | 13545283 | Jul 2012 | US |
Child | 14720037 | US | |
Parent | 12798496 | Apr 2010 | US |
Child | 13302873 | US |
Number | Date | Country | |
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Parent | 13302873 | Nov 2011 | US |
Child | 13545283 | US | |
Parent | PCT/US2008/013587 | Dec 2008 | US |
Child | 12798496 | US |