Abstract:
An aerodynamic trimmer head for use in flexible line rotary trimmers having a plurality of aerodynamic elements defined by the upper and lower head surfaces that during rotation of the head, draw air downwardly about the trimmer drive mechanism onto the upper head surface and move the air outwardly from the head into the plane of the extended cutting line and at forward inclination in the direction of rotation. The downwardly moving air cools the trimmer drive mechanism and the outwardly and forwardly moving air reduces the drag on the head and the extended cutting line. The aerodynamic elements preferably include a plurality of troughs extending downwardly and forwardly along the upper head surface, a perimeter surface for deflecting air moved by the troughs into a generally horizontally extended zone of moving air about the extended cutting line and a plurality of dimples formed in a lower surface of the head.
Abstract:
A head section for a rotary cutting device includes a body portion, a plurality of cutting lines, and a plurality of blades, wherein the plurality of cutting lines are selectively mounted to the body portion without any disassembly of the head section, and the plurality of blades are selectively mounted to the body portion without any disassembly of the head section. Thus, the head section is selectively configurable, without any disassembly of the head section, to hold only cutting blades in a cutting blade configuration and to hold only cutting lines in a cutting line configuration.
Abstract:
A multifunctional lawn mower includes a handlebar (1) and a mower head (2). The blade is arranged in the mover head. A front casing (3) and a rear casing (4) that lock jointly are arranged on top of the lawn mower. Wheels (5) are separately set on the front and rear casing. Height regulating devices (6) are set separately between the wheels and the front or rear casing. This multifunctional lawn mower not only can use as a lawn mower but also can use as a trimmer after installing the front and rear casing. Like trimmer, this lawn mower can also include a grass bag. The lawn mower has the advantages of using conveniently, saving labor, and regulating cutting height as required.
Abstract:
A collapsible protective shield assembly for grass and weed trimmers can be mounted on conventional grass and weed trimmers to keep debris from reaching the operator. When open, the shield assembly can be adjusted to enable the trimmer to get into hard to reach places. When not in use, the shield assembly can be collapsed into a compact configuration for easy storage. The shield assembly is mounted on the trimmer shaft a sufficient distance away from the trimmer cutting head to allow unobstructed operation of the trimmer.
Abstract:
A MOA device driving force transmission structure for transmitting a driving force from a drive source disposed on a chassis to a MOA device having a plurality of rotating shafts disposed under the chassis between front wheels and rear wheels, comprising a main drive shaft for MOA device connected for operation to the drive source, wherein the main drive shaft is connected to each of the plurality of rotating shafts through a shaft, whereby a transmission between the main drive shaft and the MOA device rotating shafts can be performed surely and efficiently.
Abstract:
Modular hand-operated lawn mower with motor, wherein modules for the following constructional elements are provided: a rigid frame (10); a running gear (22); a motor unit; a cutting tool and a hood (34).