Patent ID: 7270531
Filing Date: 2007-09-18
Classification: A01D,B29C,D01D,D02G,Y10T

Abstract:
1. An assembly for use in continuously forming a plurality of lengths of flexible noise attenuating cutting line for use in rotary vegetation trimmers comprised of at least two strands of monofilament bonded together in a twisted disposition, said assembly comprising: a housing having a chamber therein; a channel disposed within said housing above said chamber adapted for fluid communication with a source of molten monofilament for directing molten monofilament to said chamber; a breaker plate disposed in a lower portion of said chamber, said plate defining an upwardly projecting conical inner portion and a substantially planar outer portion, said inner portion directing molten monofilament from said channel downwardly and outwardly onto said outer portion; a plurality of extrusion dies disposed in said outer portion of said breaker plate, each of said dies defining a die hole configuration in the lower end thereof for the extrusion of at least two strands of molten monofilament therethrough; and a drive assembly for rotating each of said dies at a speed to effect a twisting together of the molten strands of monofilament being extruded through each of said dies.