A landscape trimming tool attachment device for creating circular and uniform tree wells is made up of a curved tree collar, a substantially linear extension section, and an attachment means for attaching the attachment device to a landscape trimming tool.

An example powered appliance support strap may include a first portion to extend from a continuous loop of a shoulder strap, a second portion to extend from a powered appliance to be manually carried by a person wearing the shoulder strap and a stretcher extending between the first portion and the second portion. The stretcher does not undergo stretching until experiencing a stretch triggering load at least 1 kg and no greater than 7 kg.

This brush cutter includes: a drive unit; a working unit which is driven by power of the drive unit; a shaft which transmits the power of the drive unit to the working unit; a tubular portion which is disposed between the drive unit and the working unit, and in which the shaft is inserted; a floating box which has a handle support portion; and a handle which is supported by the handle support portion. The brush cutter is provided with a vibration absorbing member which fits in a tubular portion side fitting portion provided in the tubular portion and fits in a box side fitting portion provided in the floating box.

A string motor/cutter mechanism has a hollow shaft motor having an internal shaft extending therethrough, open at at least one end, and the shaft being aligned with a motor rotation axis; a string cutting mechanism axially aligned to the motor axis and connected to the motor in a rotational connection enables the motor to rotate the string cutting mechanism at a cutting rotational speed. A rotary support mechanism has a mounting shaft for rotatably connecting a single axis, axially rotating, rolling mechanism in supporting engagement to the motor, the mounting shaft extending within and aligned with the axis of the hollow shaft of the motor. The rotary mechanism mounting shaft is connected in an operationally fixed position along the hollow motor shaft to support the cutting mechanism a selected distance, measured along the mounting shaft axis, from a ground surface on which the rolling mechanism travels.

A multi-tool (100) includes a power head (120) including a power head housing (122) having a handle (124) operably coupled thereto, a tool attachment (106, 108, 110) configured to perform a work function, the tool attachment (106, 108, 110) being alternately separable from and operably coupled to the power head (120), a motor (140) disposed in the power head housing (122), a battery (130) configured to be operably coupled to the motor (140) to selectively power the motor (140), a drive provider portion (300) disposed at the power head (120), and a drive receiver portion (320) disposed at the tool attachment (106, 108, 110). The drive provider portion (300) includes a driving portion (302) of a shaft (150) operably coupled to the motor (140), and the drive receiver portion (320) includes a driven portion (322) of the shaft (150). The driving portion (302), the drive receiver portion (320), and the motor (140) share a common axis (148). The power head (120) receives the battery (130) at an opposite end of the power head housing (122) relative to an end of the power head housing (122) at which the motor (140) is located, and the handle (124) extends from a first portion of the power head housing (122) above the motor (140) to a second portion of the power head housing (122) above the battery (130).

A small internal combustion engine includes a housing and an internal combustion engine body arranged in the housing. The internal combustion engine body includes a cylinder, a crankcase, a piston arranged in the cylinder, a crankshaft arranged in the crankcase and driving the piston, and an oil pan arranged at a bottom of the crankcase. The oil pan has an oil pan inlet, and the housing has a housing oil inlet. A hose connected to the oil pan inlet and the housing oil inlet forms a fluid passage for lubricating oil to flow from the housing oil inlet to the oil pan. A related garden tool includes a power source assembly that drives a working assembly to operate via a power transmission assembly.

An electric working machine in one aspect of the present disclosure includes two or more circuits and a control circuit. The control circuit executes two or more diagnoses one by one in order. The diagnoses at least include a first diagnosis and a second diagnosis. The first diagnosis diagnoses a first circuit. The second diagnosis diagnoses a second circuit. The control circuit executes the first diagnosis or the second diagnosis at a first diagnosis timing. The control circuit executes the first diagnosis or the second diagnosis at a second diagnosis timing. The second diagnosis timing follows the first diagnosis timing.

The invention concerns a method using a robot for an automatic treatment of a weed, the method comprises steps of capturing images of said weed with a camera on said robot; determining with said images a distance between the weed and a second vegetable organism; and selecting a treatment tool of said robot for a treatment of the weed from a group of treatment tools as function of said distance. The invention further concerns a robotic vehicle for carrying out the method for an automatic treatment of a weed.

A string trimmer attachment assembly for edging a lawn includes a weed trimmer that has a pole, a gear head that is coupled to the pole and a trimming head that is rotatably coupled to the gear head. The gear head is angled between the pole and the trimming head. A rolling unit is removably coupled to the pole of the weed trimmer. The rolling unit is oriented to extend along a perpendicular axis with respect to a rotational axis of the trimming head. Additionally, the rolling unit horizontally orients the rotational axis of the trimming head when the rolling unit is positioned to roll along a support surface. In this way the trimming head is positioned to perform edging along a vertical edge.

A transmission shaft assembly includes a connecting tube extended along a central axis, a transmission shaft being a rigid shaft made of metal material, which is extended along the central axis and disposed in the connecting tube, a first limiting element disposed on an end of the connecting tube and formed with a first hole allowing the transmission shaft to pass there through, a second limiting element disposed on the other end of the connecting tube and formed with a second hole allowing the transmission shaft to pass there through, and a bushing. The bushing includes a main body formed with a channel extended along the central axis and several projecting parts disposed on the periphery of the main body. The bushing is located in the connecting tube and disposed between the first limiting element and the second limiting element. The transmission shaft passes through the first hole, the channel, and the second hole successively.