A manufacturing method for a mower cord and including pressing a resin wire rod and plastically deforming at least part of the wire rod in an axis perpendicular direction. Work-hardening of a surface of the plastically deformed portion allows dramatic enhancement of mowing efficiency.

The present invention relates to a manufacturing method for a mower cord and includes pressing a resin wire rod and plastically deforming at least part of the wire rod in an axis perpendicular direction. Work-hardening of a surface of the plastically deformed portion allows dramatic enhancement of mowing efficiency.

Trimmer lines having length indicators disposed along the external surface of its elongated body, packages containing the same, and methods of manufacturing such trimmer line are provided. The trimmer lines have length indicators disposed along the external surface at regular increments of at least about 6 inches to indicate a measured length of the trimmer line of at least 6 inches.

A trimmer line for use with a trimmer head of a rotary trimmer is provided, wherein the trimmer line comprises two substantially equal lengths of line connected to each other by one of their ends to form the trimmer line, the two substantially equal lengths of line being of different colors to indicate the middle of the trimmer line. Such a trimmer line allows to easier, or more at least more accurate, spooling of the trimmer line on a trimmer head.

A reversible line blade for a rotating trimmer includes a loading section configured to be securable for rotation with a head of the rotating trimmer, a living hinge extending from the loading section, and a transition section extending from the living hinge and having a first cross-sectional shape with matching leading edge and trailing edge geometries. A cutting segment extends from the transition section and has a second cross-sectional shape that is different from the first cross-sectional shape. With matching lead edge and trailing edge geometries, the same line blade is functional for both clockwise trimmers and counter-clockwise trimmers.

A grass trimmer line includes a first line body having a first free end and a first non-free end and a second line body having a second free end and a second non-free end. A length of the second line body is substantially equal to a length of the first line body. The first line body has a first feature, the second line body has a second feature corresponding to the first feature, and the second feature is different from the first feature. A connecting portion is configured to connect the first non-free end of the first line body and the second non-free end of the second line body so that the first line body and the second line body are connected into the complete grass trimmer line.

One aspect of the present disclosure provides an electric working machine. The electric working machine includes a driver, a motor, and a control circuit. Attached to the driver is a selected tool. The motor drives the selected tool attached to the driver. The control circuit sets a target rotational frequency based on the selected tool. The control circuit controls the motor to rotate at the target rotational frequency.

The invention is a multi-tiered line trimmer and shredder apparatus using a number of individual pre-molded or pre-cut nail head string lines. Whenever the engine or motor is running, the apparatus rotates the nail head string lines generating cutting power designed to utilize multiple functions, such as trimming grass or weeds, clearing vegetation by shredding or mulching it, or removing snow. The apparatus consists of a base, cylindrical body, nail head string lines, and cover. The base attaches to a drive shaft or directly to an engine or motor. The cylindrical body is hollow, has holes throughout its wall that may be the same or variable sizes. The nail head string lines are inserted into the holes. The cover is used to cover the cylinder body, and to secure the nail head portion of the nail head string lines within the cylindrical body while the apparatus is in use.

The invention relates to a cutting filament for a vegetation cutting machine, such as a brush cutter or an edge trimmer, comprising a polymer matrix and a fiber load distributed within the matrix, characterized in that: the polymer matrix comprises polyamide 6, copolyamide 6/66 and caprolactam, and the fiber load comprises fibers having a length ranging from 4 to 6 mm.