Patent ID: 7467470
Filing Date: 2008-12-23
Classification: A01D

Abstract:
1. A self-contained line cartridge for use with a line trimmer, wherein the line trimmer includes a trimmer head including a rotatable housing that presents at least one line outlet, said head including a cartridge support fixed relative to the rotatable housing, said self-contained line cartridge comprising: a hollow body presenting an end wall, a sidewall, and an open outlet mouth; and a continuous supply of monofilament line within said body and having a free end thereof adapted to extend through said outlet mouth, said line being of suitable weight and durability for the cutting of weeds or grass, said supply being oriented to permit successive lengths of the line to be dispensed through said mouth, said self-contained line cartridge being pre-filled with the continuous supply of monofilament line and configured to be exposed relative to and removably attached to the housing so as to be replaceable once the continuous supply of monofilament line is exhausted, said self-contained line cartridge presenting a line-receiving chamber in which the continuous supply of monofilament line is contained, with line operable to be fed through the open outlet mouth from the chamber, said open outlet mouth presenting a smaller width dimension than the chamber so that the supply of line is retained within the chamber prior to cartridge attachment, said sidewall presenting opposite first and second ends, said end wall spanning the first end and thereby enclosing a corresponding end of the line receiving chamber, said sidewall including a main body portion that cooperates with the end wall to define the line-receiving chamber, said sidewall including a neck portion projecting axially from the main body portion to define the second end, said neck portion having a reduced cross-sectional dimension relative to the main body portion so as to define the open outlet mouth, said neck portion operable to be releasably attached to the cartridge support, with the cartridge support configured to be positioned to overlie the open outlet mouth, whereby the cartridge is connectable to the rotatable housing by the cartridge support to rotate therewith.