Hair brush

Abstract

The hair brush includes an elongated member having a handle segment and a bristle substrate segment. The bristle substrate defines a cylindrical core having a smoothly curved, concave central region and radially larger end regions. A plurality of bristles are attached over the bristle substrate. The bristles have varying lengths such that the outer peripheral portions of the plurality of bristles define a planar surface, an arcuate segment of cylinder, or a complete cylinder. The bristles are distributed throughout the bristle substrate in a predetermined pattern. The bristles are disposed over the peripheral surface of the bristle substrate in one of two manners. In one embodiment the bristles are individually disposed on the bristle substrate in a series. In another embodiment, the bristles are segmented into groups of small bundles and these bundles are disposed on the bristle substrate in a series. In both embodiments, each series of individual bristles or bristle bundles are axially spaced apart in a common radial plane passing through the axial center line of the brush. A rectangular bristle substrate is also disclosed. The outer peripheral portions of the plurality of bristles for the rectangular substrate embodiment form either an arcuate segment of a cylindrical shape or a planar surface.

What is claimed is:  
     
         1 . A hair brush, comprising: 
 an elongated member element having a handle segment and a bristle substrate segment on a common axial centerline;    said bristle substrate defining a cylindrical core segment with a smoothly curved concave central region and radially larger end regions;    a plurality of bristles of various lengths attached over said bristle substrate;    said bristles having bristle ends extending out from said bristle substrate, and said bristle ends defining one of a cylindrical shape and an arcuate segment of a cylindrical shape.    
     
     
         2 . A brush as claimed in    claim 1    wherein said plurality of bristles are segregated into groups of small bundles and are disposed over a peripheral surface of said bristle substrate in a series of axially aligned and radially distributed linear bristle rows, each row consisting of a sub-plurality of bristle bundles, each bristle bundle in a respective linear row spaced axially apart along said bristle substrate.  
     
     
         3 . A brush as claimed in    claim 2    wherein said handle segment is generally cylindrically shaped.  
     
     
         4 . A brush as claimed in    claim 3    wherein said handle segment defines a continuously curved convex region having radially smaller handle end regions.  
     
     
         5 . A brush as claimed in    claim 1    wherein said plurality of bristles are individually disposed over a peripheral surface of said bristle substrate in a series of axially aligned and radially distributed linear bristle rows, each said linear row spaced axially apart along said bristle substrate.  
     
     
         6 . A hair brush, comprising: 
 an elongated member element having a handle segment and a bristle substrate segment on a common axial centerline;    said bristle substrate defining an elongated, rectangular core segment with an upper surface;    said upper surface having a smoothly curved concave central region and dimensionally larger end regions;    a plurality of bristles of various lengths attached over said upper surface of said bristle substrate;    said bristles having bristle ends extending out from said bristle substrate, and said bristle ends defining one of an arcuate segment of a cylindrical shape and a planar shape.    
     
     
         7 . A brush as claimed in  6  wherein said plurality of bristles are segregated into groups of small bundles and are disposed over said upper surface of said bristle substrate in a series of axially aligned and laterally spaced apart linear bristle rows, each row consisting of a sub-plurality of bristle bundles, each bristle bundle in a respective linear row spaced axially apart along said bristle substrate.  
     
     
         8 . A brush as claimed in    claim 6    wherein said plurality of bristles are individually disposed over said upper surface of said bristle substrate in a series of axially aligned and laterally spaced apart linear bristle rows, each said linear row spaced axially apart along said bristle substrate.