Patent ID: 6298642
Filing Date: 2001-10-09
Classification: A01D

Abstract:
An adjustable height string trimmer head and cutting blade attachment therefor, comprising in combination:a generally cylindrical central core, for conventionally removably securing to a string trimmer machine;said central core including a plurality of circumferentially disposed rows of height adjustment holes therein, with each of said rows including a plurality of evenly spaced holes therein;a height adjustment plate for adjustably and removably securing to said central core;said plate comprising a locking collar having a passage therethrough for removably, positively, and adjustably securing to said central core, and a trimmer line attachment disc formed integrally therewith and extending outwardly therefrom;said locking collar including a single circumferential row of attachment holes therethrough, with said locking collar attachment holes selectively aligning with said evenly spaced holes of each of said rows of said height adjustment holes of said central core when said locking collar is installed thereon;said trimmer line attachment disc including at least an upper surface, a lower surface opposite said upper surface, and a periphery with a plurality of trimmer line attachment means disposed therearound;said trimmer line attachment disc further including a large diameter concentric flange depending from said lower surface thereof and immediately adjacent said passage of said collar;a cutting blade including a concentric passage having a diameter substantially equal to said flange of said trimmer line attachment disc, for fitting closely and concentrically therearound; andsaid cutting blade and said trimmer line attachment disc each having a plurality of matching attachment holes formed therein, for removably securing said cutting blade to said trimmer line attachment disc.