A portable work machine wherein a first region of a shaft facing a handle support part corresponds to the antinode of vibration generated in the shaft. A plurality of bearing members are disposed along the longitudinal direction of the shaft at positions other than the first region in a cylindrical part.

A weed trimmer trolley assembly includes a clamp which has a first portion that is closable with a second portion for securing around a pole of a weed trimmer. A swivel is rotatably disposed on the clamp and the swivel is positionable at a variety of angles with respect to the weed trimmer. A pair of legs is each coupled to and extends downwardly from the swivel. Each of the legs comprises a first half that threadably engages a second half such that each of the legs has an adjustable length. A pair of arms is provided and each of the arms is coupled to a respective one of the legs. A pair of rollers is each rotatably coupled to a respective one of the arms to support the weed trimmer and thereby assist a physically limited user with employing the weed trimmer.

A weed trimmer trolley assembly includes a clamp which has a first portion that is closable with a second portion for securing around a pole of a weed trimmer. A swivel is rotatably disposed on the clamp and the swivel is positionable at a variety of angles with respect to the weed trimmer. A pair of legs is each coupled to and extends downwardly from the swivel. Each of the legs comprises a first half that threadably engages a second half such that each of the legs has an adjustable length. A pair of arms is provided and each of the arms is coupled to a respective one of the legs. A pair of rollers is each rotatably coupled to a respective one of the arms to support the weed trimmer and thereby assist a physically limited user with employing the weed trimmer.

One apparatus for providing high-resolution CSI feedback includes a processor and a radio transceiver. The processor computes sets of amplitude and phase parameters for one or more channel compression matrices. Here, each channel compression matrix corresponds to one transmission layer of a multiple-layer transmission, where each channel compression matrix is comprised of one or more column vectors. The radio transceiver sends indications of the sets of amplitude and phase parameters to one or more network entities is a mobile communication network.

A motor module (100) for an electrically driven garden tool comprises: a brushless DC motor (102) having a motor drive shaft (104); and a gearbox having an output shaft (108), the gearbox configured to receive the motor drive shaft (104) from the brushless DC motor (102) and drive a rotary element of the electrically driven garden tool with the output shaft (108), wherein the gearbox having a gear reduction ratio of at least 2:1. An electrically driven garden tool comprises: a housing (602) comprising a receptacle for receiving a motor module (100); and a rotary element drivable with an electric motor, the rotary element comprises a receiving element having a keyed interface corresponding to the keyed surface (122) or structure on the output shaft (108) of the motor module (100). A grass compactor (900) comprises: mounting structure to attach the grass compactor (900) to a lawn mower (1000); an inlet (1104) for receiving cut grass from an underside of the lawn mower (1000); a channel (1206) for transporting cut grass from the inlet (1104) to a feed hopper (1400); and a compaction conveyor (1404) configured to receive cut grass from the feed hopper (1400), and to compact and convey cut grass along a length thereof and discharge compacted cut grass from the outlet (1210).

A subassembly for a trimmer head of a power tool, the subassembly including: a flywheel; and a cartridge including a segment of trimmer line, wherein the cartridge is removably keyed to the flywheel, wherein the subassembly is configured to be operatively coupled to a motor of the power tool, and wherein the subassembly is removably positionable in a housing of the power tool.

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.

A work machine wherein motive power of a drive part is transmitted to an operation part through a shaft, the shaft being inserted into a cylindrical part and supported by a plurality of bearing members. In the cylindrical part, the plurality of bearing members are disposed on the node side of vibration generated in the shaft or the cylindrical part.

A robotic lawn mower includes a first wheel driven by a first electric wheel motor, a second wheel driven by a second electric wheel motor, a cutting implement driven by an electric cutting implement motor, a power system for powering the electric wheel motors and the electric cutting implement motor, and a controller configured to control operation of the electric wheel motors and the electric cutting implement motor to autonomously mow a yard. The power system includes multiple removable rechargeable battery modules and multiple receptacles, each receptacle configured to receive one of the battery modules.

A grass trimming head includes a housing assembly and a spool. The housing assembly is formed with a housing cavity and an outer aperture for allowing a cutting line to be inserted from an outside of the housing assembly into the housing cavity. At least a portion of the spool is arranged inside the housing cavity, and the spool is rotatable with respect to the housing assembly about a central axis. The spool is formed with an inner aperture for allowing the cutting line to be inserted into the spool or a clamping portion configured to fix the cutting line.