Locking hair extension device

Abstract

A hair extension device is provided having a first piece having a first attachment portion and a weft portion. The hair extension device can have a second piece comprising a second attachment portion. The first and second attachment portions are configured to be pressed against each other with the wear's hair intertwined there between. One or more wefts of filaments are attached to the backside of at least one of the first or second attachment portions.

What is claimed is: 
     
         1 . A hair extension device comprising:
 a first resilient base comprising a back surface and a first array of upstanding studs distributed across a front surface of the first resilient base, each stud of the first array of studs having a stem portion attached at a first end to the front surface of the first resilient base;   a first adhesive on a portion of the back surface of the first resilient base;   a first weft of filaments having a front side portion attached to the back surface of the first resilient base with the first adhesive, the first weft of filaments having a first weft length, wherein a first distal end of the first weft of filaments is located outside a bottom edge of the first resilient base;   a seam layer on a backside portion of the first weft of filaments opposite the front side portion; and   a second resilient base comprising a back surface and a front surface wherein the front surface of the second resilient base is configured to removably attach to the first array of studs while a selected portion of hair is sandwiched between the front surfaces of the first and second resilient bases.   
     
     
         2 . The hair extension device of  claim 1 , wherein the second resilient base comprises a second array of upstanding studs distributed across the front surface of the second resilient base, each stud of the second array of studs having a stem portion attached at a first end to the front surface of the second resilient base, wherein the stems of the second array of studs comprise an inherent spring for lateral movement to allow an increase and decrease of separation distance between adjacent stem portions. 
     
     
         3 . The hair extension device of  claim 1 , wherein each stud of the first array of upstanding studs has a head portion at a second end of each stem portion. 
     
     
         4 . The hair extension device of  claim 2 , wherein each stud of the second array of upstanding studs has a head portion positioned at a second end of each stem portion. 
     
     
         5 . The hair extension device of  claim 1 , wherein the second resilient base comprises a plurality of slots extending from the front surface to the back surface of the second resilient base and wherein each of the plurality of slots is positioned to correspond with positions of the studs in the first array of studs. 
     
     
         6 . The hair extension device of  claim 1 , further comprising a second weft of filaments having a selected portion of the second weft of filaments attached to the back surface of the second resilient base, the second weft of filaments having a second weft length, wherein a first distal end of the second weft of hair is located outside a bottom edge of the second resilient base. 
     
     
         7 . The hair extension device of  claim 1 , wherein the seam layer and the first adhesive are intermingled with the first weft of filament between the front and back side portions of the first weft of filaments. 
     
     
         8 . The hair extension device of  claim 7 , wherein the first adhesive operates to attach the first weft of filaments to the first resilient base and as the seam layer. 
     
     
         9 . The hair extension device of  claim 1 , wherein the studs of the first array of studs are distributed such that the separation distance between adjacent stem portions in the array of upstanding studs is between about 0.5 mm and 3 mm. 
     
     
         10 . A hair extension device comprising:
 a first piece of the hair extension device comprising:
 a first base having a back surface and a front surface, the front surface comprising a first plurality of studs spaced apart from each other in an array and distributed across a portion of the front surface, each of the studs of the first plurality of studs being upstanding and having a stem portion, the stem portion having a bottom end integral with the front surface; and 
 a first weft portion comprising a first weft of filaments having a first weft filament direction and comprising a first seam perpendicular to the first weft filament direction and covering at least one side of the first weft of filaments, the first weft portion is adhered to the back surface at the seam such that the seam is coplanar with the back surface, the first weft of filaments extends in one direction from the back surface past a first edge of the first base, the first weft of filaments having a first length; and 
   a second piece of the hair extension device comprising:
 a second base having a back surface and a front surface, the front surface being configured to removably attach to the first plurality of studs when a selected portion of hair is partially entwined in the first plurality of studs and the first piece and second piece are pressed together. 
   
     
     
         11 . The hair extension device of  claim 10 , wherein the second piece and the first piece of the hair extension device are of a same configuration. 
     
     
         12 . The extension device of  claim 10 , wherein each of the studs of the first plurality of studs further comprises a head portion on a top end of each stem. 
     
     
         13 . The extension device of  claim 12 , wherein the second base further comprises a second plurality of studs spaced apart from each other in an array and distributed across a portion of the front surface of the second base, each of the studs of the second plurality of studs being upstanding and having a stem portion, the stem portion having a bottom end integral with the front surface. 
     
     
         14 . The extension device of  claim 13 , wherein the second base further comprises a second weft portion, the weft portion comprising:
 a second weft portion comprising a second weft of filaments having a second filament direction and comprising a second seam perpendicular to the second filament direction and covering a portion of a side of the second weft of filaments, the second weft portion is adhered to the back surface of the second base at the second seam such that the second seam is coplanar with the back surface of the second base, the second weft of filaments extends in one direction from the back surface past a first edge of the second base, the second weft of filaments having a second length.   
     
     
         15 . The hair extension device of  claim 10 , wherein the first seam holds the filaments of the first weft of filaments in place proximate to the back surface while providing protection against fraying of the weft of filaments on both sides of the first weft of filaments. 
     
     
         16 . A hair extension device comprising:
 a first resilient base comprising a back surface and a first array of upstanding studs distributed across a front surface of the first resilient base, each stud of the first array of studs having a stem portion attached at a first end to the front surface of the first resilient base;   a first weft of filaments having a front side and a back side of the weft;   a first adhesive intermingled with a portion of the first weft and on the back surface of the first resilient base such that the front side of the portion of the first weft is attached to the back surface, the first weft of filaments having a first weft length with a first weft end located outside a bottom edge of the first resilient base.   
     
     
         17 . The hair extension device of  claim 16 , further comprising a second resilient base comprising:
 a second resilient base comprising a back surface and a front surface wherein the front surface of the second resilient base is configured to removably attach to the first array of studs while a selected portion of hair is sandwiched between the front surface of the first and second resilient bases.   
     
     
         18 . The hair extension device of  claim 16 , wherein each stud of the first array of upstanding studs includes a head portion at a second end of each stem portion. 
     
     
         19 . The hair extension device of  claim 16 , wherein the first weft of filaments has a second weft end located outside a top edge of the first resilient base.