Extension hair piece and hair extension using the device

Abstract

Disclosed is a hair extension device. The device comprises a tube, a hair bundle and a link. The tube is configured to deform more easily in a first direction than in a second direction when the same amount of crimping force is applied to the tube. The first and second directions are on a cross-sectional plane, in which the tube's cross-section forms a closed loop. Further the tube may have a desirable crimping direction and be shaped to substantially induce grabbing of the tube with a crimping tool toward a desirable orientation thereof for crimping in the desirable crimping direction. The hair bundle comprises a plurality of extension hair strands bound together. The link links the hair bundle to the tube.

1 . A hair extension device comprising:
 a tube configured to deform more easily in a first direction than in a second direction when the same amount of crimping force is applied to the tube, wherein the first and second directions are on a cross-sectional plane, in which the tube's cross-section forms a closed loop;   a hair bundle comprising a plurality of extension hair strands bound together; and   a link linking the hair bundle to the tube.   
     
     
         2 . The device of  claim 1 , wherein the tube's cross-section is in a shape which is generally an oval or a polygon. 
     
     
         3 . The device of  claim 1 , wherein the first direction is perpendicular to the second direction. 
     
     
         4 . The device of  claim 1 , wherein the tube's cross-section has a longest axis passing two opposing points of the tube that are the farthest from each other, wherein the tube's cross-section has a shortest axis passing two opposing points that are the shortest from each other. 
     
     
         5 . The device of  claim 4 , wherein the link is connected to the tube generally at a middle point of the tube in the longest axis. 
     
     
         6 . The device of  claim 4 , wherein the link contacts one of the two opposing points that are the shortest from each other. 
     
     
         7 . The device of  claim 4 , wherein the first direction is parallel to the shortest axis. 
     
     
         8 . The device of  claim 4 , wherein the link comprises a portion within the tube, wherein the portion is generally at a middle point of the tube in the longest axis. 
     
     
         9 . The device of  claim 8 , wherein the link is glued to the tube such that the portion within the tube stays generally at the middle point of the tube in the longest axis. 
     
     
         10 . The device of  claim 1 , wherein the link is flexible such that the hair bundle can move independent of the tube. 
     
     
         11 . The device of  claim 1 , wherein the link comprises a flexible string tied to the tube. 
     
     
         12 . The device of  claim 1 , further comprising an additional hair bundle comprising a plurality of extension hair strands bound together. 
     
     
         13 . The device of  claim 1 , wherein the tube has a desirable crimping direction and is shaped to substantially induce grabbing of the tube with a crimping tool toward an orientation thereof for crimping in the desirable crimping direction. 
     
     
         14 . A method of hair extension, comprising:
 providing the device of  claim 1 ;   inserting, into the tube, a plurality of hair strands of a person or animal; and   subsequently crimping the tube using a crimping tool in the first direction, thereby substantially flattening the tube.   
     
     
         15 . The method of  claim 14 , wherein the tube's cross-section has a longest axis passing two farthest opposing points of the tube that are the farthest from each other, wherein the tube's cross-section has a shortest axis passing two shortest opposing points that are the shortest from each other. 
     
     
         16 . The method of  claim 15 , wherein crimping in the first direction results in that the two farthest points become farther and that the two shortest points become shorter. 
     
     
         17 . The method of  claim 15 , further comprising:
 grabbing the tube using the crimping tool, in which the crimping tool contacts two grabbing points that defines the second direction; and   prior to crimping, changing the grabbing points to two opposing points of the tube that defines the first direction.   
     
     
         18 . The method of  claim 15 , wherein the link comprises a portion within the tube, wherein the portion is generally at a middle point of the tube in the longest axis, wherein the portion stays generally at the middle point in the longest axis after crimping. 
     
     
         19 . The method of  claim 18 , wherein the link is glued to the tube such that the portion within the tube stays generally at the middle point of the tube in the longest axis. 
     
     
         20 . The method of  claim 14 , wherein the tube's cross-section is in a shape which is generally an oval or a polygon. 
     
     
         21 . The method of  claim 14 , wherein the link is flexible such that the hair bundle can move independent of the tube.