# Patent

## Title
Hair extension

## Abstract

A hair extension for attachment to a person's head including a plurality of hair sections held together by a track, and methods of attaching the same are provided. The hair extension is configured such that the plurality of hair sections can move upward and downward freely with person's natural hair when styling.

## Background
CROSS-REFERENCE TO RELATED APPLICATION DATA
This application is a continuation-in-part of U.S. application Ser. No. 14/644,543, filed Mar. 11, 2015 entitled “Hair Extension”, the content of which is incorporated fully by reference herein.


BACKGROUND
The following description relates to hair extensions.
Hair extensions can provide instant length, fullness, and enhance the appearance of a user. Many types of hair extensions are available for different methods of attachment. For example, small sections of hair may be attached to a user one by one via braiding, tying, bonding, clamping, shrink tubing, weaving, gluing, etc. Such attachment methods are also referred to as strand-by-strand attachment, and provide relatively light weight hair extensions that can move with user's natural hair when styling. However, a strand-by-strand attachment method is time intensive and relatively expensive.
A weft hair extension is a more cost effective and less time intensive option. A weft hair extension typically includes a weft extending along the top, on which a swathe of hair is attached. The weft hair extension may be attached to a user using microrings, microbeads, clamping, braiding, tying, bonding, tape, glue or by sewing to user's hair. For example, a section of user's hair may be held together close to user's scalp by a double sided tape, and a weft hair extension may be attached to one side of the tape. Subsequently, the weft hair extension and the attached hair are pulled upwards and another weft extension may be attached on the other side of the tape. A weft hair extension may also be sewn to user's hair. In this method user's hair may be braided, for example into cornrows, to which a weft hair extension may be sewn in.
Weft hair extensions can be attached faster than hair extensions attached by the strand by strand method, and they are less costly. However, since hair strands are fixed on a weft, movement of the hair extension is limited and styling of hair is more difficult. Further, due to the relatively bulky nature of the weft, the hair extension is more visible than those attached via strand-by-strand method, especially when hair is pulled up in an up-style, such as a ponytail.
Accordingly, it is desirable to provide a hair extension that can be attached relatively quickly and look natural in various hair styles.
SUMMARY
According to one embodiment there is provided a hair extension for attachment to a person head. The hair extension includes a plurality of hair sections held together by a track. Each of the plurality of hair sections includes a plurality of hair strands and a loop arranged proximate one end of the hair section. The hair extension is configured such that the each of the plurality of the hair sections rotates about the track freely.
The loop may be formed by holding together the plurality of hair strands in a bundle and bending one end of the bundle over and around the track. Further, each of the plurality of hair sections may include a wrap formed by fastening together the plurality of hair strands proximate the loop, such that the loop is securely formed above the wrap and the plurality of hair strands are tightly held together by the wrap. The track may be threaded through the loop of each of the plurality of hair sections, such that the plurality of the hair sections hangs down from the track.
The plurality of hair strands may be synthetic hair or natural hair collected from another person. The wrap may be formed from an elastic thread. In an embodiment, the wrap is formed by tying an elastic thread multiple times around the hair section. The wrap may extend in a length of about 0.1 inch to about 1 inch. In other embodiments, the wrap may be formed using microbeads, microlinks or keratin glue. The track may be formed from a polymeric thread or a fishing line. In some embodiments, the track may include knots arranged proximate each end of the hair extension and/or between each hair section.
In an embodiment, a hair extension includes a plurality of hair sections and track. Each of the plurality of hair sections includes a plurality of hair strands, a loop arranged proximate an end of the hair section, and a wrap formed adjacent the loop holding together the plurality of hair strands. The hair extension is configured such that the track passes through the loop of each of the plurality of hair sections, and each of the plurality of hair sections hangs down from the track and rotates about the track freely.
The plurality of hair strands may be wrapped over and around the track forming the loop with the track passing therethrough. The wrap may be formed by tying together the plurality of hair strands multiple times using a thread, such that the plurality of hair strands are securely fastened together and the loop is formed above the wrap. In such an embodiment, the wrap may extend in a length of about 0.1 inch to about 1 inch. The wrap may also be formed using a microlink, a microbead, a microloop, or a microring. Alternatively, the wrap may be formed using keratin glue.
The hair section may also be formed by holding together the plurality of hair strands in a bundle and crocheting the bundle about the track. In such an embodiment, the crocheting provides the loop and at least one knot proximate the loop to securely hold the plurality of hair strands together, in which the wrap is defined by the at least one knot.
In some embodiments, the track may include a plurality of knots, in which a knot is formed proximate each end of the track to prevent the plurality of the hair sections from slipping off the track. Further, the track may include additional knots between each of the plurality of the hair sections.
According to another embodiment there is provided a method of attaching a hair extension to a person's head. The method includes the step of providing a hair extension including a plurality of hair sections held together by a track, in which each of the plurality of hair sections includes a plurality of hair strands and a loop arranged proximate one end of the hair section. The hair extension is configured such that the each of the plurality of the hair sections rotates about the track freely. The method also includes the step of attaching the hair extension to a person head such that each the plurality of hair sections can be pulled up or down individually or together with person's hair when styling.
In the step of proving a hair extension, loop may be formed by holding together the plurality of hair strands in a bundle and bending one end of the bundle over and around the track. Further, each of the plurality of hair sections may include a wrap formed by fastening together the plurality of hair strands proximate the loop, such that the loop is securely formed above the wrap and the plurality of hair strands are tightly held together by the wrap. The track may be threaded through the loop of each of the plurality of hair sections, such that the plurality of the hair sections hangs down from the track.
The plurality of hair sections may include a first peripheral hair section, a second hair section, a third hair section, and a last peripheral hair section, in which the first peripheral hair section is arranged at one end of the hair extension, and the last peripheral hair section is arranged at the other end of the hair extension. The second hair section may be arranged adjacent the first peripheral hair section, and the third hair section may be arranged adjacent the second hair section, and subsequent hair sections may be arranged between the third hair section and the last peripheral hair section to form the hair extension.
In one embodiment, the method may also include the step of weaving at least one micro stitch on a person's head. In such an embodiment, the step of attaching the hair extension may include the step of arranging the hair extension adjacent a micro stitch, and anchoring the first peripheral hair section to the micro stitch by sewing together the first peripheral hair section and the micro stitch using a thread and a needle, in which the thread is threaded through a loop of the first peripheral hair section.
The step of attaching the hair extension may also include the step of sewing together the micro stitch and the track between each of the plurality of hair sections. In one embodiment, the attachment between the first peripheral hair section and the micro stitch provides a first attachment point between the hair extension and the person's head. The step of attaching the hair extension may further include the step of sewing together the track and the micro stitch between the first peripheral hair section and the second hair section to provide a second attachment point, and sewing together the track and the micro stitch between the second hair section and the third hair section to provide a third attachment point, and sewing together the track and the at least one micro stitch between subsequent hair sections to provide a plurality of attachment points. The attachment points may be configured such that each of the plurality of hair sections rotates upward and downward freely.
In another embodiment, the method may include the step of braiding the person's hair to provide at least one braid. In such an embodiment, the step of attaching the hair extension may include the step of arranging the hair extension adjacent a braid, and anchoring the first peripheral hair section to the braid by sewing together the first peripheral hair section and the braid using a thread and a needle, in which the thread is threaded through a loop of the first peripheral hair section.
The step of attaching the hair extension may also include the step of sewing together the braid and the track between the plurality of hair sections. In an embodiment, the attachment between the first peripheral hair section and the braid provides a first attachment point between the hair extension and the person's head. The step of attaching the hair extension may further include sewing together the track and the braid between the first peripheral hair section and the second hair section to provide a second attachment point, and sewing together the track and the braid between the second hair section and the third hair section to provide a third attachment point, and sewing together the track and the braid between subsequent hair sections to provide a plurality of attachment points. The attachment points may be configured such that each of the plurality of hair sections rotates upward and downward freely.
In another embodiment, a method for attaching a hair extension to a person's head includes the step of providing a hair extension comprising a plurality of hair sections held together by a track, in which the plurality of hair sections include a first peripheral hair section and a last peripheral hair section. Each of the plurality of hair sections includes a plurality of hair strands and a loop arranged proximate one end of the hair section. The hair extension is configured such that the each of the plurality of the hair sections rotates about the track freely. The method also includes the step of providing a plurality of hair knots in the person's head including at least a first peripheral hair knot and a last peripheral hair knot, and attaching the hair extension to the person's head, during which each of the plurality of hair knots is attached to an adjacent hair section, such that the first peripheral hair section is anchored to the first peripheral hair knot and the last peripheral hair section is anchored to the last peripheral hair knot. The plurality of hair sections may be attached to the plurality of hair knots, such that about 5 to 15 unanchored hair sections are arranged between each of anchored hair sections that are attached to the hair knots.
In yet another embodiment, a method for attaching a hair extension to a person's head includes the step of providing a hair extension comprising a plurality of hair sections held together by a track, in which the plurality of hair sections include a first peripheral hair section and a last peripheral hair section. Each of the plurality of hair sections includes a plurality of hair strands and a loop arranged proximate one end of the hair section. The hair extension is configured such that the each of the plurality of the hair sections rotates about the track freely. The method also includes the step of attaching the hair extension to the person's head by crocheting the first peripheral hair section to a corresponding hair section on the person's head and crocheting the last peripheral hair section to a corresponding hair section on the person's head.
Other objects, features, and advantages of the disclosure will be apparent from the following description, taken in conjunction with the accompanying sheets of drawings, wherein like numerals refer to like parts, elements, components, steps, and processes.



BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a hair extension including a plurality of hair sections according to an embodiment;
FIG. 2 is a top perspective view of a hair section according to an embodiment;
FIG. 3 is a side perspective view of the hair section of FIG. 2;
FIG. 4 is an illustration of the hair extension of FIG. 1 attached by a micro stitch attachment method according to an embodiment;
FIG. 5 is an illustration of the hair extension of FIG. 1 attached by a braid attachment method according to another embodiment; and
FIG. 6 is an illustration demonstrating a movement of the hair extension of FIG. 5 attached to a user's braid.



DETAILED DESCRIPTION
While the present disclosure is susceptible of embodiment in various forms, there is shown in the drawings and will hereinafter be described one or more embodiments with the understanding that the present disclosure is to be considered illustrative only and is not intended to limit the disclosure to any specific embodiment described or illustrated.
FIG. 1 is a perspective view of an embodiment of a hair extension 10 generally including a plurality of hair sections 12 held together by a track 14. FIGS. 2 and 3 are close-up illustrations of the hair section 12. Each of the hair sections 12 is formed using a small bundle of hair strands 20, which may be synthetic hair or natural hair collected from another person. In this embodiment, the hair section 12 includes a plurality of hair strands 20, such that the hair section 12 may be held between a person's thumb and index finger. The size, length, and color of hair section 12 may be varied according to user's natural hair and a desired hair style.
The hair section 12 may be formed by gathering a small bundle of hair strands 20 and bending one end of the bundle over and around the track 14 to provide a loop 16. The looped end of the hair bundle is fastened proximate the loop 16 to provide a wrap 18, such that the loop 16 is securely formed above the wrap 18 and the hair strands 20 are tightly held together by the wrap 18. The location of the wrap 18 may be adjusted to change the size of the loop 16, which may be determined according to a thickness of the track 14. The loop 16 may be sized such that the hair section 12 may rotate about the track 14 freely. In an embodiment, the loop 16 is formed by wrapping the bundle of hair strands 20 around the track 14, tying the wrapped hair strands 20 at the bottom of the loop 16 with a thread to form the wrap 18, and snipping off loose short hair strands under the wrap 18.
The wrap 18 may be formed using a suitable material that may be used to tightly fasten or secure around the looped hair strands 20, such that the hair strands 20 do not slip out from the hair section 12, and the loop 16 is securely formed above the wrap 18. Suitable materials for the wrap 18 include, but are not limited to, polymeric threads and yarns, such as nylon threads or elastic threads, small rings or strips, such as microbeads, microlinks, microrings, and microloops, and glue, such as keratin glue. In one embodiment, the wrap 18 may be formed using an elastic thread. The elastic thread may be tied around the hair strands 20 multiple times proximate the looped end to form the wrap 18. The wrap 18 may extend longitudinally about 0.1 inches to about 1 inch long, more preferably about 0.2 inches to about 0.75 inches long. The color of the wrap 18 may be selected to generally match the color of the hair strands 20. In another embodiment, the hair strands 20 may be fastened together proximate the looped end using a plastic microlink to form the wrap 18. Yet in another embodiment, the wrap 18 may be formed using keratin glue, in which keratin glue is preapplied on the looped end of the hair strands 20 and heat or cold fused after forming the loop 16. Alternatively, the wrap 18 may be formed by crocheting the hair strands 20 about the track 14, such that one end of the hair strands 20 is looped about the track 14 and freely rotated about the track 14. In such an embodiment, the wrap 18 is formed by a knot from crocheting the hair strands 20 without using a separate wrapping material.
The track 14 may be formed using a suitable material to hold together a plurality of the hair sections 12 to form the hair extension 10. To form the hair extension 10, a bundle of hair strands 20 may be wrapped around the track 14 at one end to form the loop 16, such that the track 14 is threaded through the loop 16 of each of the plurality of the hair sections 12. Preferably, the track 14 is formed using a material having a low surface tension to allow sliding movement of the hair sections 12 across the track 14 and rotating movement about the track 14 with little resistance. Suitable materials for the track 14 include, but are not limited to, polymeric threads, such as a nylon thread, a fishing line, string and elastic threads. In one embodiment, each end of the track 14 is knotted 22 to prevent the hair sections 12 from sliding off the track 14.
The hair extension 10 may include any number of hair sections 12 according to a desired width of the hair extension 10. For example, the hair extension 10 may include a sufficient number of hair sections 12 to form a width of about 1 inch or more. The hair extension 10 may be provided in various widths, lengths, and colors.
The hair extension 10 may be attached to a user using various methods to maximize a natural look of the hair extension 10. Many different base anchors may be formed on a user's head to attach the hair extension 10. Examples of the base anchors include, but are not limited to, cornrows, various braid patterns, micro braids, micro stitching, lacing, tying, knotting, elastic treads, rubber bands, bonding, keratin bonds, and microlinks.
In one embodiment, the hair extension 10 is attached to a user by a micro stitch attachment method. FIG. 4 is an illustration of a micro stitch attachment method according to an embodiment. In this method, a hair dresser may weave a micro stitch 26 in a section of user's head 24. A micro stitch is formed by braidless weaving, in which a weft of thread is stitched directly onto a user's head. Depending on the desired appearance and style, a plurality of micro stitches 26 may be weaved on a user's head. The micro stitch 26 may be weaved across the width of user's hair line or in smaller sections as desired. After the micro stitch 26 is weaved, the hair extension 10 may be laid against the micro stitch 26, such that a first peripheral hair section 28 is adjacent one end 30 of the micro stitch 26. The hair extension 10 may be anchored by sewing the first peripheral hair section 28 to the micro stitch 26 by stitching together the first peripheral hair section 28 and the micro stitch 26 using a needle 32 and a thread 34, in which the thread 34 is stitched through a loop 29 of the peripheral hair section 28.
After one end of the hair extension 10 is anchored to the micro stitch 26 by stitching together the first peripheral hair section 28 and the micro stitch 26, the rest of the hair extension 10 may be attached by sewing the track 14 between hair sections 12 to the micro stitch 26, such that the hair sections 12 may lay generally flat against the micro stitch 26. Preferably, the track 14 may be sewn to the micro stitch 26 between the hair sections 12 by double stitching at each attachment point. For example, after the peripheral hair section 28 is anchored to the micro stitch 26, a second attachment point 36 may be provided between the first peripheral hair section 28 and a second hair section 38, in which the micro stitch 26 and the track 14 between the first peripheral hair section 28 and the second hair section 38 are sewn together by a double stitching. Similarly, a third attachment point 41 may be formed by sewing together the micro stitch 26 and the track 14 between the second hair section 38 and a third hair section 40, and so on. The micro stitch 26 and the track 14 are sewn together between each of the hair sections 12 until the hair extension 10 is attached across the micro stitch 26. The last peripheral hair section may be attached to the micro stitch 26 through a loop of the last peripheral hair section like the first peripheral hair section 28 to securely anchor the last peripheral hair section to the micro stitch 26. In case the hair extension 10 is wider than the micro stitch 26, the track 14 may be cut proximate the last peripheral hair section and knotted. The rest of the unused hair extension 10 may be used for other sections of user's head.
Another suitable attachment method is a braid attachment method. This method is similar to the micro stitch method described above except the hair extension 10 is attached to a braid on a user's head instead of a micro stitch. In this method, a hair dresser may braid user's hair to provide a braid as a base anchor. User's hair may be braided in many different ways and in various designs depending on a desired end result. For example, user's hair may be braided in sections, for example, quarter sections, to each of which the hair extension 10 is attached. Alternatively, a user's hair may be braided across the whole head.
FIG. 5 is an illustration of a braid attachment method according to an embodiment. As it was with the micro stitch attachment method, the hair extension 10 is laid against a braid 50, and the first peripheral hair section 28 is sewn to the one end of braid 50 through the loop 29 as it was with the micro stitch method. Subsequently, the braid 50 is sewn together with a track 14 between hair sections 12. The last peripheral hair section may be sewn to the braid 50 through a loop of the last peripheral hair section like the first peripheral hair section 28 to securely anchor the last peripheral hair section to the braid 50.
FIG. 6 illustrates a movement of the hair extension 10 attached to the braid 50. As shown, the attached hair extension 10 may be freely rotated upward and downward about the track 14. Thus, the user may easily style her hair up, such as in a ponytail. Because the hair sections 12 move up with the user's hair, the hair extension 10 lays flat in an up-style and is much less visible when compared to conventional weft extensions. The hair extension 10 including the plurality of hair sections 12 and the track, and the methods of attachments through the loop 16 and/or via the track provide the versatility and natural look of the hair extensions attached by a strand-by-strand method.
In other embodiments, the hair extension 10 may be attached by other anchoring methods. For example, anchor points on a user's head may be provided by hair knots. In such an embodiment, a user's head is provided with several hair knots spaced apart from each other in a desired area for hair extension. A hair knot may be formed by any conventional brazilian knot methods or other similar hair knotting methods. For example, a hair knot may be formed by grabbing a small section of user's hair and tying the hair section proximate the root with a rubber band, thread, microlink, or other like materials, similarly as when making a brazilian knot. A first hair knot may be provided at one end of the width of the desired area for hair extension, while a last hair knot may be provided at the other end with a few hair knots provide therebetween. The hair extension 10 may be configured to fit the width of the desired area for hair extension.
In attaching the hair extension 10, a first peripheral hair section 28 may be attached to the first hair knot, for example, by tying the first peripheral hair section 28 proximate a wrap 18 to the first hair knot proximate its root using a rubber band, elastic thread, microlink, or like, or gluing the first peripheral hair section 28 to the first hair knot using keratin glue or like, or securing the first peripheral hair section 28 and the first hair knot together using a microclip or like, or via other suitable methods. Additional anchoring of the hair extension 10 may be provided by attaching a hair section 12 to the last hair knot and the hair knots provide between the first and last hair knots. For example, anchoring may be provided such that about 5-15 unanchored hair sections are arranged between each of the anchored hair sections that are attached to the hair knots. A number of anchored hair sections may be adjusted, such that the hair extension 10 may lay substantially flat and even across the width of the hair extension area without an undesirable drop of the hair sections from the weight of unanchored hair sections between the anchored hair sections.
Further, the hair extension 10 may be attached to a user's head by anchoring peripheral hair sections 28, 60 to corresponding sections of user's hair by crocheting. In such an embodiment, a few additional hair sections 12 between the peripheral hair sections 28, 60 may also be anchored to the user's head by crocheting.
It should also be understood that various changes and modifications to the presently disclosed embodiments will be apparent to those skilled in the art. Such changes and modifications can be made without departing from the spirit and scope of the present disclosure and without diminishing its intended advantages. It is therefore intended that such changes and modifications be covered by the appended claims.

## Claims

1. A hair extension for attachment to a person's head comprising:
a plurality of hair sections, wherein each of the plurality of hair sections comprises:
a plurality of hair strands;
a loop integrally formed in the hair section by the plurality of hair strands and arranged proximate an end of the hair section;
a wrap formed adjacent the loop holding together the plurality of hair strands; and

a track formed from an elongated flexible element passing through the loop of each of the plurality of hair sections;
wherein each of the plurality of hair sections hangs down from the track and rotates about the track freely, wherein the track includes at least two knots and each of the plurality of hair sections is configured to slide along the track between the knots.

2. The hair extension of claim 1, wherein the plurality of hair strands are wrapped over and around the track forming the loop with the track passing therethrough, wherein the wrap is formed using a thread, wherein the plurality of hair strands are tied together multiple times using the thread, such that the plurality of hair strands are securely fastened together and the loop is formed above the wrap, wherein the wrap extends in a length of about 0.1 inch to about 1 inch.

3. The hair extension of claim 1, wherein the wrap is formed using a microlink, a microbead, a microloop, or a microring.

4. The hair extension of claim 1, wherein the wrap is formed using keratin glue.

5. The hair extension of claim 1, wherein each of the hair sections is formed by holding together the plurality of hair strands in a bundle and crocheting the bundle about the track, wherein the crocheting provides the loop and at least one knot proximate the loop to securely hold the plurality of hair strands together, wherein the wrap is defined by the at least one knot.

6. The hair extension of claim 1, wherein the track includes a plurality of knots, wherein a knot is formed proximate each end of the track to prevent the plurality of the hair sections from slipping off the track.

7. The hair extension of claim 6, wherein the track further includes a knot between each of the plurality of the hair sections.

8. A method for attaching a hair extension to a person's head comprising the steps of:
providing a hair extension comprising:
a plurality of hair sections held together by a track formed from an elongated flexible element, the plurality of hair sections including a first peripheral hair section and a last peripheral hair section;
wherein each of the plurality of hair sections includes a plurality of hair strands and a loop integrally formed in the hair section by the plurality of hair strands, the loop arranged proximate one end of the hair section; and

wherein the hair extension is configured such that the each of the plurality of the hair sections rotates about the track freely, wherein the track includes at least two knots and each of the plurality of hair sections is configured to slide along the track between the knots;
providing a plurality of hair knots in the person's head including at least a first peripheral hair knot and a last peripheral hair knot; and
attaching the hair extension to the person's head, wherein each of the plurality of hair knots is attached to an adjacent hair section, such that the first peripheral hair section is anchored to the first peripheral hair knot and the last peripheral hair section is anchored to the last peripheral hair knot.

9. The method of claim 8, wherein the plurality of hair sections are attached to the plurality of hair knots, such that about 5 to 15 unanchored hair sections are arranged between each of anchored hair sections that are attached to the hair knots.

10. A method for attaching a hair extension to a person's head comprising the steps of:
providing a hair extension comprising:
a plurality of hair sections held together by a track formed from an elongated flexible element, the plurality of hair sections including a first peripheral hair section and a last peripheral hair section;
wherein each of the plurality of hair sections includes a plurality of hair strands and a loop integrally formed in the hair section by the plurality of hair strands, the loop arranged proximate one end of the hair section; and

wherein the hair extension is configured such that the each of the plurality of the hair sections rotates about the track freely, wherein the track includes at least two knots and each of the plurality of hair sections is configured to slide along the track between the knots; and
attaching the hair extension to the person's head by crocheting the first peripheral hair section to a corresponding hair section on the person's head and crocheting the last peripheral hair section to a corresponding hair section on the person's head.