Patent ID: 6478907
Filing Date: 2002-11-12
Classification: A46B,A46D,B29C,B29L,Y10S,Y10T

Abstract:
A method for making bristle sub-assemblies, comprising the steps of:forming a bristle string having first and second rows of bristles extending outwardly from a base string, wherein the first and second rows of bristles are disposed in a first orientation with respect to each other; bending the bristles of at least one of the first and second rows of bristles to achieve a second orientation with respect to each other, thereby developing a spring force in the bristles that tends to restore the bristles to the first orientation; heating at least the bent ones of the bristles to a temperature sufficient to relax the spring force while maintaining the bristles in the second orientation; and cooling the heated bristles so that the bristles maintain the second orientation.