Patent Grant
11095078
Embodiments of the present invention relate generally to power transfer systems, and, more particularly, to power transfer systems for use with artificial trees, such as artificial Christmas trees.
As part of the celebration of the Christmas season, many people traditionally bring a pine or evergreen tree into their home and decorate it with ornaments, lights, garland, tinsel, and the like. Natural trees, however, can be quite expensive and are recognized by some as a waste of environmental resources. In addition, natural trees can be messy, leaving both sap and needles behind after removal, and requiring water to prevent drying out and becoming a fire hazard. Each time a natural tree is obtained it must be decorated, and at the end of the Christmas season the decorations must be removed. Because the needles have likely dried and may be quite sharp by this time, removal of the decorations can be a painful process. In addition, natural trees are often disposed in landfills, further polluting these overflowing environments.
To overcome the disadvantages of a natural Christmas tree, yet still incorporate a tree into the holiday celebration, a great variety of artificial Christmas trees are available. For the most part, these artificial trees must be assembled for use and disassembled after use. Artificial trees have the advantage of being usable over a period of years and thereby eliminate the annual expense of purchasing live trees for the short holiday season. Further, they help reduce the chopping down of trees for a temporary decoration, and the subsequent disposal, typically in a landfill, of same.
Generally, artificial Christmas trees comprise a multiplicity of branches each formed of a plurality of plastic needles held together by twisting a pair of wires about them. In other instances, the branches are formed by twisting a pair of wires about an elongated sheet of plastic material having a large multiplicity of transverse slits. In still other artificial Christmas trees, the branches are formed by injection molding of plastic.
Irrespective of the form of the branch, the most common form of artificial Christmas tree comprises a plurality of trunk sections connectable to one another. For example, in many designs, a first and second trunk section each comprise an elongate body. A first end of the body includes a receiving portion (e.g., a female end) and a second end of the body includes an extending portion (e.g., a male end). Typically, the body is a cylinder. Near the second end the body tapers slightly to reduce the diameter of the body. In other words, the diameter of the first end, i.e., the receiving portion, is larger than the diameter of the second end, i.e., the extending portion. To connect the trunk sections, the first end of a first trunk sections receives the second end of a second trunk sections. For example, the tapered end of the first trunk section is inserted into the non-tapered end of the second trunk section. In this manner, a plurality of trunk sections can be connected and a tree assembled.
One difficulty encountered during assembly, however, is the rotational alignment of the trunk sections. In some designs, the trunk sections comprise electrical systems. The electrical systems allow electricity to flow through the trunk of the tree and into accessories that can be plugged into outlets disposed on the trunk. To connect neighboring trunk sections, however, electrical prongs of one trunk section must be rotationally aligned with, and inserted into, electrical slots in another trunk section. This alignment process can be frustrating because it can be difficult for a user to judge whether the prongs will engage the slots when trunk sections are joined together. It may therefore take several attempts before a user can electrically connect two trunk sections.
What is needed, therefore, is a power transfer system for an artificial tree that allows a user to connect neighboring tree trunk sections without the need to rotationally alight the trunk sections. Embodiments of the present invention address this need as well as other needs that will become apparent upon reading the description below in conjunction with the drawings.
Briefly described, embodiments of the present invention comprise a power transfer system to facilitate the transfer of electrical power between tree trunk sections of an artificial tree. The power transfer system can advantageously enable neighboring tree trunk sections to be electrically connected without the need to rotationally align the tree trunk sections during assembly. Embodiments of the present invention can therefore facilitate assembly of an artificial tree, reducing user frustration during the assembly process.
In some embodiments, the power transfer system can comprise a first power distribution subsystem disposed within a first trunk section of an artificial tree. The power transfer system can further comprise a second power distribution subsystem disposed within a second trunk section of an artificial tree. The first power distribution subsystem can comprise a male end with electrical prongs and the second power distribution subsystem can comprise a female end with electrical voids. The prongs can be inserted into the voids to conduct electricity between the power distribution subsystems, and, therefore, between the trunk sections of the tree.
To enable neighboring tree trunk sections to be electrically connected without the need to rotationally align the tree trunk sections, the male end can comprise a central prong and a channel prong. Likewise, the female end can comprise a central void and a channel void. The central void can be located proximate the center of the female end, and the channel void can be a circular void disposed around the central void. When the trunk sections are joined, the central prong can be inserted into the central void. Similarly, the channel prong can be inserted into the channel void. However, because the channel void is circular, the channel prong can be inserted into the channel void in a variety of locations around the channel void. Accordingly, the male end can engage the female end in a variety of rotational configurations, and each configuration can provide a different rotational alignment between the first trunk section and the second trunk section. More specifically, the first trunk section can electrically engage the second trunk section regardless of the rotational relationship between the two sections.
Embodiments of the present invention can comprise an artificial tree comprising a plurality of tree trunk sections. The trunk sections can form a trunk of the artificial tree. A first power distribution subsystem can be disposed within an inner void of a first trunk section of the plurality of tree trunk sections, and the first power distribution subsystem can comprise a male having a central prong and a channel prong. A second power distribution subsystem can be disposed within an inner void of a second trunk section of the plurality of tree trunk sections, and the second power distribution subsystem can comprise a female end having a central void and a channel void. In some embodiments, the central prong of the male end can be configured to engage the central void of the female end and the channel prong of the male end can be configured to engage the channel void of the female end to conduct electricity between the first power distribution subsystem and the second power distribution subsystem.
In some embodiments, the channel prong of the male end can be configured to engage the channel void of the female end at a plurality of locations. In some embodiments, the channel prong of the male end can be configured to engage the channel void of the female end in a plurality of configurations, and each configuration can provide a different rotational alignment between the first trunk section and the second trunk section.
In some embodiments, the channel void of the female end can be substantially circular. The central void of the female end can be disposed proximate the center of the substantially circular channel void.
In some embodiments, a safety cover can obstruct access to the channel void.
In some embodiments, the central prong of the male end can engage a central contact device, and the central contact device can comprise one or more flexible contact sections that abut the central prong.
In some embodiments, an outlet can be disposed on a trunk section, and the outlet can be configured to provide electrical power to a strand of lights.
In some embodiments, alignment mechanisms can prevent the first trunk section from rotating with respect to the second trunk section.
In some embodiments, the first trunk section can comprise an inner sleeve proximate an end of the first trunk section, and the second trunk section can comprise an outer sleeve proximate an end of the second trunk section. The inner sleeve can be configured to engage the outer sleeve.
In some embodiments, two or more pivot areas can be between the inner sleeve and the outer sleeve to substantially prevent the first trunk section from rocking with respect to the second trunk section.
In some embodiments, a power cord can be configured to engage a wall outlet and provide power to the first power distribution subsystem and the second power distribution subsystem.
Embodiments of the present invention can further comprise a system for connecting tree trunk sections of an artificial tree. The system can comprise a first power distribution subsystem having a male end, and the male end can have one or more electrical prongs. The system can further comprise a second power distribution subsystem having a female end, and the female end can have one or more electrical voids. In some embodiments, the one or more electrical prongs of the first power distribution subsystem can engage one or more electrical voids of the second power distribution subsystem to conduct electricity between the first power distribution subsystem and the second power distribution subsystem. In some embodiments, the one or more electrical prongs of the first power distribution subsystem can engage one or more electrical voids of the second power distribution subsystem in a plurality of configurations, and each configuration can provide a different rotational alignment between the first power distribution subsystem and the second power distribution subsystem.
In some embodiments, a first electrical void of the female end can be a circular channel void.
In some embodiments, a second electrical void of the female end can be a central void located proximate the center of the female end.
In some embodiments, an electrical prong of the male end can engage the circular channel void at a plurality of locations around the circular channel void.
Embodiments of the present invention can further comprise a connector system for electrically connecting a plurality of power distribution subsystems of a plurality of tree trunk sections that form an artificial tree. The connector system can comprise a male end disposed on an end of a first tree trunk section of the plurality of tree trunk sections, and the male end can have a central prong and a channel prong. The connector system can further comprise a female end disposed on an opposite end of the first tree trunk section. The female end can have a central receiving void that can be located proximate the center of the female end and a channel receiving that can be substantially round and disposed axially around the central receiving void.
In some embodiments, a safety cover can obstruct access to the channel void. In some embodiments, the safety cover can be depressed to enable access to the channel void.
In some embodiments, the male end and the female end can comprise one or more clutch elements, and the one or more clutch elements can be configured to prevent the male end from rotating with respect to the female end.
In some embodiments, the central receiving void can comprise a central contact device, and the central contact device can have one or more flexible contact sections that can be configured to abut an electrical prong.
The foregoing summarizes only a few aspects of the present invention and is not intended to be reflective of the full scope of the present invention. Additional features and advantages of the present invention are set forth in the following detailed description and drawings, may be apparent from the detailed description and drawings, or may be learned by practicing the present invention. Moreover, both the foregoing summary and following detailed description are exemplary and explanatory and are intended to provide further explanation of the presently disclosed invention as claimed.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate multiple embodiments of the presently disclosed subject matter and serve to explain the principles of the presently disclosed subject matter. The drawings are not intended to limit the scope of the presently disclosed subject matter in any manner.
Although preferred embodiments of the invention are explained in detail, it is to be understood that other embodiments are contemplated. Accordingly, it is not intended that the invention is limited in its scope to the details of construction and arrangement of components set forth in the following description or illustrated in the drawings. The invention is capable of other embodiments and of being practiced or carried out in various ways. Also, in describing the preferred embodiments, specific terminology will be resorted to for the sake of clarity.
It should also be noted that, as used in the specification and the appended claims, the singular forms “a,” “an” and “the” include plural references unless the context clearly dictates otherwise. References to a composition containing “a” constituent is intended to include other constituents in addition to the one named.
Also, in describing the preferred embodiments, terminology will be resorted to for the sake of clarity. It is intended that each term contemplates its broadest meaning as understood by those skilled in the art and includes all technical equivalents which operate in a similar manner to accomplish a similar purpose.
Ranges may be expressed herein as from “about” or “approximately” or “substantially” one particular value and/or to “about” or “approximately” or “substantially” another particular value. When such a range is expressed, other exemplary embodiments include from the one particular value and/or to the other particular value.
Herein, the use of terms such as “having,” “has,” “including,” or “includes” are open-ended and are intended to have the same meaning as terms such as “comprising” or “comprises” and not preclude the presence of other structure, material, or acts. Similarly, though the use of terms such as “can” or “may” are intended to be open-ended and to reflect that structure, material, or acts are not necessary, the failure to use such terms is not intended to reflect that structure, material, or acts are essential. To the extent that structure, material, or acts are presently considered to be essential, they are identified as such.
It is also to be understood that the mention of one or more method steps does not preclude the presence of additional method steps or intervening method steps between those steps expressly identified. Moreover, although the term “step” may be used herein to connote different aspects of methods employed, the term should not be interpreted as implying any particular order among or between various steps herein disclosed unless and except when the order of individual steps is explicitly required.
The components described hereinafter as making up various elements of the invention are intended to be illustrative and not restrictive. Many suitable components that would perform the same or similar functions as the components described herein are intended to be embraced within the scope of the invention. Such other components not described herein can include, but are not limited to, for example, similar components that are developed after development of the presently disclosed subject matter.
To facilitate an understanding of the principles and features of the invention, various illustrative embodiments are explained below. In particular, the presently disclosed subject matter is described in the context of being an artificial tree power system. The present invention, however, is not so limited, and can be applicable in other contexts. For example and not limitation, some embodiments of the present invention may improve other power systems, such as light poles, lamps, extension cord systems, power cord connection systems, and the like. These embodiments are contemplated within the scope of the present invention. Accordingly, when the present invention is described in the context of a power transfer system for an artificial Christmas tree, it will be understood that other embodiments can take the place of those referred to.
When assembling an artificial tree, decorators commonly desire to illuminate the tree with one or more light strings, i.e., strands of lights. The light strings require electrical power and are conventionally connected in series. In many designs, at least one of the light strings is connected to a wall outlet to provide power to all of the light strings. When decorating a tree, the decorator can walk around the tree, placing the light strings on various locations on the branches of the tree. In order to provide power to all of the light strings, typical light strings come with a first end in the form of a male end and a second end in the form of a female end.
To provide power to more than one light string, the decorator can insert the male end of one light string into the female end of another light string. In doing so, the light string that is electrically connected to a wall outlet (or other power outlet) transfers electrical energy from the outlet to subsequent light strings. In some conventional systems, the lights strings can have multiple points of electrical connectivity, providing for parallel or serial connectivity. Even so, the flow of power is usually from one light string connected to the power outlet to one or more downstream light strings.
The act of providing power from the outlet to one or more light strings can be cumbersome and frustrating for a decorator. In order to attach multiple light strings together, the decorator will either need to attach the light strings prior to their placement on the tree or attach the light strings after they have been placed on the tree. If the decorator attaches multiple light strings together, in order to “wrap” the tree with the light strings, the decorator often must walk around the tree, carrying the multiple strings. If the decorator waits until after the light strings are placed on the tree, the decorator will need to reach through the tree branches and electrically connect the light strings. The decorator would also likely need to manipulate the light strings in order to connect the strings together. This process can be difficult and can take an extended amount of time.
To alleviate issues associated with providing power to light strings in conventional artificial trees, and to provide further advantages, the present invention comprises a power transfer system for an artificial tree. In an exemplary embodiment, an artificial tree trunk comprises tree trunk sections that are engaged with one another to form the trunk of an artificial tree. At least some of the tree trunk sections can have hollow voids. Within the hollow voids can be power distribution subsystems. In some embodiments, power distribution subsystem can comprise a female end, a male end, or both located proximate the ends of the tree trunk sections. In some embodiments, when one tree trunk section is engaged with another tree trunk section, the male end of one power distribution subsystem engages with and is electrically connected to the female end of a neighboring power distribution subsystem. Thus, by electrically connecting a power distribution subsystem of a tree trunk section to a power outlet, electrical power flows from the outlet to that tree trunk section, and from that tree trunk section to other tree trunk sections.
A variety of systems exist to facilitate joining the male and female ends of power distribution subsystems. Although conventional plug and outlet systems can be used, such as those manufactured in accordance with NEMA standards, in some cases, it can be difficult in conventional designs to align the male prongs of one tree trunk section with the female holes of another tree trunk section. In order to engage the male end with the female end, the assembler of the tree often must vertically align the tree trunk sections so that the male prongs of the male end are not angled to the female end in a manner that prevents insertion of the male prongs. The assembler must also rotationally align the two tree trunk sections to allow the prongs to line up with the female holes. Even if the tree trunk sections are perfectly vertical, in conventional systems, the male prongs can only engage the female holes if the male prongs are rotationally aligned with the female holes. If not, the male prongs abut the area around the female holes, which prevents insertion of the male prongs. Attempting to align the male prongs and the female holes can therefore take significant time, and can be a frustrating experience for a user.
To alleviate this problem, in one embodiment, the present invention comprises a female end having a central void for receiving a first male prong of the male end and a channel void disposed around the central void for receiving a second male prong. In this configuration, the assembler of the tree trunk sections can be less concerned with the rotational, or angular, displacement of the two tree trunk sections, as the channel provides for engagement with the male end at various angular displacements. In exemplary embodiments, the channel is disposed 360 degrees around the central void so that, regardless of the angular displacement between the tree trunk sections, the male prongs can engage the female voids. This can make the assembly process much easier and more enjoyable for a user.
Embodiments of the present invention can also be used in a variety of systems. For example, some embodiments can be used in low voltage systems, and other embodiments can be used in normal, higher voltage systems.
Referring now to the figures, wherein like reference numerals represent like parts throughout the views, exemplary embodiments will be described in detail.
In some embodiments, the voids 110, 115 can be hollows or apertures that receive and engage with other electrical connectors, such as prongs, and enable the electrical connectors to conduct electrical power through the trunk of the tree. In some embodiments, the central receiving void 110 can be located proximate the center of the female end 105. The channel receiving void 115, therefore, can be a round or circular channel that encircles the central receiving void 110. Accordingly, the central receiving void 110 can be located proximate the center of the channel receiving void 115.
As shown in
As shown in
In some embodiments, therefore, the angular displacement between connecting trunk sections 100 is not problematic during assembly because the trunk sections 100 can be joined at any number of angular displacements. Thus, a person assembling a Christmas tree utilizing an embodiment of the present invention can more readily assemble the various trunk sections 100 without having to rotationally align male end 205 with female end 105.
In addition, because some embodiments of the present invention allow rotation while assembled, the assembler of the Christmas tree can rotate the various trunk sections to some degree after assembly to achieve a desired appearance. However, in some embodiments, as shown in
In some embodiments, central male prong 210 and/or channel male prong 215 can be spring loaded. For example, when male end 205 is physically disconnected from female end 105, central male prong 210 and/or channel male prong 215 can be recessed or retracted. Likewise, when male end 205 is physically connected to female end 105, central male prong 210 and/or channel male prong 215 can be extended, by spring action, to provide for electrical connectivity. Employing spring loaded prongs 210, 215 can help to reduce wear and tear on the prongs 210, 215 and can also help to reduce the likelihood of electrical shock when central male prong 210 and/or channel male prong 215 are energized.
Embodiments of the present invention can comprise a central receiving void 110 and/or a channel receiving void 115 with spring loaded safety covers. More specifically, the central receiving void 110 and/or a channel receiving void 115 can have one or more covers that obstruct access to the voids when they are not engaged with prongs of a male end 205. In this manner, the safety covers can prevent a user from unintentionally inserting a finger or other object into the voids and receiving an electric shock. The covers can be spring loaded so that they can be depressed by the prongs of the male end 205 as the male end 205 and the female end 105 are joined.
In some embodiments, it can be desirable to have a guide system, such as a sleeve system, that assists the assembler in aligning the various tree trunk sections with each other during assembly. In some embodiments, a sleeve system can also help secure the tree trunk sections to each other when assembled, and can prevent the assembled tree from swaying or wobbling.
When an assembler is joining female end 105 to male end 205, and thus joining their respective tree trunk sections 100, outer sleeve 120 and inner sleeve 220 can engage and act as guides to help bring the two tree trunk sections 100 together. Moreover, the use of a sleeve system, such as outer sleeve 120 and inner sleeve 220, can provide additional benefits. For example, the inner diameter of outer sleeve 120 can be the same size, or nearly the same size, as the outer diameter of inner sleeve 220 to provide for a secure fit between female end 105 and male end 205. This can help provide lateral support to the tree trunk sections 100, reducing the likelihood that a force applied to one of the tree trunk sections 100 will cause the tree trunk sections 100 to separate. An exemplary sleeve system can be found in co-pending U.S. patent application Ser. No. 12/982,015, entitled, “Connector System,” the contents of which are hereby incorporated by reference.
In some embodiments, flexibility in the rotational alignment of the tree trunk sections 100 is not needed or desired. In such a configuration, conventional electrical connectivity systems can be used. This is illustrated by way of example in
As shown in
In some embodiments, it can be desirable to provide for one or more electrical outlets 515 on the trunk sections 100 along the length of the assembled tree. Thus, one or more power distribution subsystems 305 can comprise one or more electrical outlets 515. Outlets 515 can be configured to receive power from wires 510 to provide a user with the ability to plug in devices, such as tree lights or other electrical components. By providing a convenient location to plug in lights, outlets 515 can minimize the amount of effort required to decorate a tree. More specifically, a user can plug a strand of lights directly into an outlet 515 on a trunk section 100, instead of having to connect a series of strands together, which can be cumbersome and frustrating for a user.
Embodiments of the present invention can further comprise strands of lights that are unitarily integrated with the power transfer system. Thus, the lights can be connected to the wires 510 without the need for outlets 515, although outlets 515 can be optionally included. Such embodiments can be desirable for trees that come pre-strung with lights, for example.
In some embodiments, one or more trunk sections 100 can comprise a power cord 520 for receiving power from an outside power source, such as a wall outlet. The power cord 520 can be configured to engage a power source and distribute power to the rest of the tree. More specifically, power can flow from the wall outlet, through the power cord, through the one or more power distribution subsystems 305, and to accessories on the tree, such as lights or strands of lights. In some embodiments, the power cord 520 can be located on a lower trunk section 100 of the tree for reasons of convenience and appearance, i.e., the power cord 520 is close to the wall outlets and exits the tree at a location that is not immediately visible.
Embodiments of the present invention can also comprise a bottom section 525 of one or more trunk sections 100. The bottom section 525 can be substantially conical in shape, and can be configured to engage a stand for the tree (not shown). Accordingly, the bottom section 525 can be inserted into the stand, and the stand can support the tree, usually in a substantially vertical position.
In some embodiments, as shown in
In addition, in some embodiments, all of the trunk sections 100 can be configured so that the female end 105 is the bottom end, and the male end 205 is the top end. In this manner, if the power cord is plugged in during assembly, the risk of injury is minimized because energized male prongs are not exposed.
Other embodiments of the present invention can comprise additional features, different features, and/or different combinations of features than the embodiments described above. Some of these embodiments are described below.
Central contact device 805 can be at least partially disposed within central receiving void 705, and can be designed to make electrical contact with a prong inserted into central receiving void 705. Similarly, channel contact device 810 can be at least partially disposed within channel receiving void 710, and can be designed to make electrical contact with a prong inserted into channel receiving void 710. In this manner, central contact device 805 and channel contact device 810 can conduct power from a male end to a female end 700, or from a female end 700 to a male end, of a power distribution subsystem.
Safety cover 715 and spring member 815 are also shown in
Female end 700 can further comprise a safety gate 820 at the opening of the central receiving void 705. The safety gate 820 can comprise an opening 830 that can be the same dimensions as, or nearly the same dimensions as, a prong of a male end that is inserted through the safety gate 820. In some embodiments, therefore, the opening 830 of the safety gate 820 can be too small to accommodate a finger, and can therefore prevent a user from inserting his or her finger into receiving void 705 and receiving an electric shock. The opening 830 can also be small enough to prevent insertion of many other foreign objects, such as metal kitchen utensils, for example.
As shown in
In some embodiments, channel male prong 1010 can be a bendable prong that flexes as it makes contact with channel contact device 810. More specifically, channel male prong 1010 can flex inwardly and outwardly, as required, as it slides into channel receiving void 710 and abuts channel contact device 810. The channel male prong 1010 can be sufficiently resilient to flex, or spring toward channel contact device 810, thereby providing an effective electrical connection between the channel male prong 1010 and the channel contact device 810.
In some embodiments, the channel male prong 1010 can comprise a contact area 1015 that extends from the prong to engage the channel contact device 810, thereby facilitating contact between the channel male prong 1010 and the channel contact device 810. In some embodiments, the channel male prong 1010 can further comprise a pushing surface 1020. The pushing surface 1020 can be configured to apply a force to the safety cover 715, thereby depressing the safety cover 715 as the male end 1000 and the female end 700 are joined.
To provide effective electrical connectivity, in some embodiments, the center male prong 1005, the channel male prong 1010, the central contact device 805, and the channel contact device 810 can comprise electrically conductive material. In some embodiments, for example, the center male prong 1005, the channel male prong 1010, the central contact device 805, and the channel contact device 810 can comprise one or more of copper, copper alloy, or any other conductive material.
As shown in
As described above, in some embodiments, channel receiving void 710 is disposed in a circular manner around central receiving void 705, alleviating any issues concerning the angular rotation of male end 1000 and female end 700 during assembly. More specifically, channel male prong 1010 can be inserted at any number of positions or locations along channel receiving void 710, and establish and maintain electrical connectivity between female end 700 and male end 1000.
When two trunk sections 100 are joined, such that they are in electrical communication, the first clutch elements 1405 of the male end 1000 and the second clutch elements 1410 of the female end 700 can engage. The engaging clutch elements can prevent the two trunk sections 100 from rotating with respect to one another after tree assembly is complete. This can be advantageous as it can allow a user to align and maintain the trunk sections 100, and thus the branches of the tree, in a desired configuration. Accordingly, the trunk sections 100 and branches cannot later rotate out of configuration when the tree is decorated or otherwise touched, pulled, bumped, etc.
While the present disclosure has been described in connection with a plurality of exemplary aspects, as illustrated in the various figures and discussed above, it is understood that other similar aspects can be used or modifications and additions can be made to the described aspects for performing the same function of the present disclosure without deviating therefrom. For example, in various aspects of the disclosure, methods and compositions were described according to aspects of the presently disclosed subject matter. However, other equivalent methods or composition to these described aspects are also contemplated by the teachings herein. Therefore, the present disclosure should not be limited to any single aspect, but rather construed in breadth and scope in accordance with the appended claims.
This application is a continuation of U.S. patent application Ser. No. 16/556,781, filed 30 Aug. 2019, entitled “Powered Tree Construction”, which is a continuation of U.S. patent application Ser. No. 16/185,836, filed 9 Nov. 2018, entitled “Powered Tree Construction”, which is a continuation of U.S. patent application Ser. No. 15/911,676, filed 5 Mar. 2018, entitled “Powered Tree Construction”, which is a continuation of U.S. patent application Ser. No. 15/297,729, filed 19 Oct. 2016, now U.S. Pat. No. 9,912,109, entitled “Powered Tree Construction”, which is a continuation of U.S. patent application Ser. No. 14/621,507, filed 13 Feb. 2015, now U.S. Pat. No. 9,119,495, entitled “Powered Tree Construction”, which is a continuation of U.S. patent application Ser. No. 14/547,505, filed 19 Nov. 2014, now U.S. Pat. No. 8,959,810, entitled “Powered Tree Construction,” which claims the benefit of U.S. patent application Ser. No. 14/090,470, filed 26 Nov. 2013, now U.S. Pat. No. 9,843,147, entitled “Powered Tree Construction,” which claims the benefit of U.S. patent application Ser. No. 13/659,737, filed 24 Oct. 2012, now U.S. Pat. No. 8,863,416, entitled “Powered Tree Construction,” which claims the benefit of U.S. Provisional Patent Application No. 61/552,944, filed 28 Oct. 2011, entitled “Powered Tree Construction.” The entire contents and substance of all of the above applications are incorporated herein by reference in their entirety as if fully set forth below.
| Number | Name | Date | Kind |
|---|---|---|---|
| 3602531 | Patry | Aug 1971 | A |
| 4068118 | Carrington | Jan 1978 | A |
| 4072857 | DeVicaris | Feb 1978 | A |
| 4247216 | Pansini | Jan 1981 | A |
| 4385849 | Crain | May 1983 | A |
| 4793646 | Michaud, Jr. | Dec 1988 | A |
| 5479223 | McLendon | Dec 1995 | A |
| 5776559 | Woolford | Jul 1998 | A |
| 5878989 | Allman | Mar 1999 | A |
| 5971810 | Taylor | Oct 1999 | A |
| 7311566 | Dent | Dec 2007 | B2 |
| 20070056615 | Lai | Mar 2007 | A1 |
| 20130301247 | Chen | Nov 2013 | A1 |
| Number | Date | Country | |
|---|---|---|---|
| 20200136324 A1 | Apr 2020 | US |
| Number | Date | Country | |
|---|---|---|---|
| 61552944 | Oct 2011 | US |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 16556781 | Aug 2019 | US |
| Child | 16732112 | US | |
| Parent | 16185836 | Nov 2018 | US |
| Child | 16556781 | US | |
| Parent | 15911676 | Mar 2018 | US |
| Child | 16185836 | US | |
| Parent | 15297729 | Oct 2016 | US |
| Child | 15911676 | US | |
| Parent | 14621507 | Feb 2015 | US |
| Child | 15297729 | US | |
| Parent | 14547505 | Nov 2014 | US |
| Child | 14621507 | US | |
| Parent | 14090470 | Nov 2013 | US |
| Child | 14547505 | US | |
| Parent | 13659737 | Oct 2012 | US |
| Child | 14090470 | US |
