Patent ID: 7665215
Filing Date: 2010-02-23
Classification: A01D

Abstract:
1. A trimmer head for string trimmer machines using fixed length segments of line including in combination: a generally cylindrically shaped main housing member having first and second ends with a central axis, and configured at the first end thereof for attachment to a drive shaft of a string trimmer machine; at least a first set of first and second line entry holes and a second set of first and second line entry holes on the main housing member intermediate the first and second ends thereof, with the first and second sets of first and second line entry holes spaced at different distances from the first end of the main housing member, with the first set located closer to the first end of the main housing member than the second set, and with the spacing between the first and second line entry holes of the first set in a first predetermined distance and the spacing between the first and second line entry holes of the second set being a second predetermined distance; at least a first set of first and second line exit openings on the main housing member intermediate the first and second ends thereof and spaced apart a third predetermined distance greater than both the first and second predetermined distances; a first arcuate guide channel between the first line entry hole of the first set of line entry holes and the first line exit opening of the first set of line exit openings; a second arcuate guide channel between the first line entry hole of the second set of line entry holes and the first line exit opening of the first set of line exit openings with the first and second arcuate guide channels converging at the first line exit opening of the first set of line exit openings; a third arcuate guide channel between the second line entry hole of the first set of line entry holes and the second line exit opening of the first set of line exit openings; a fourth arcuate guide channel between the second line entry hole of the second set of line entry holes and the second line exit opening of the first set of line exit openings with the third and fourth arcuate guide channels converging at the second line exit opening of the first set of line exit openings.