A handheld portable cutting apparatus has a cutter unit with a cutter unit longitudinal axis. In a central housing section of the cutting apparatus, a drive connection is arranged between an electric drive motor and the cutter unit, wherein a motor housing having a motor housing longitudinal axis extends from the central housing section. A handle extends from the central housing section in a handle longitudinal axis. The cutter unit includes a guide bar with a saw chain circulating thereon, wherein, in a side view onto the cutting apparatus, the point of intersection between the handle longitudinal axis and the motor housing longitudinal axis and also the point of intersection between the handle longitudinal axis and the cutter unit longitudinal axis lie in the central housing section.

A cutting tool with a plurality of cutting elements connected to a support structure wherein a portion of the support structure is configured to flex or bend based on the rotational frequency of the cutting tool. The rotational frequency of the cutting tool is a product of the design and composition of the tool.

Chainsaws are provided. A chainsaw includes a housing, a motor, a bar fixedly coupled to the housing and configured to form a cutting track, a cutting implement configured to move along the cutting track and drivable by the motor, and a tensioning system configured to adjust tension in the cutting implement.

The measuring device described herein relates to an automatic wood marker attachment device. The device can be selectively attached to a chainsaw or power saw. More specifically, the device is clamped to the handlebar of a chainsaw or power saw using clamping arms. A pair of independently operating and articulating laser sources are used for projecting linear laser beams. The laser beams provide markings on a wood log to enable an operator to make accurate and precise cuts using the automatic laser markers. The laser sources are controlled using a control button to independently operate the laser sources. Further, the laser sources can be adjusted to any desired angle to allow automatic marking at any predeterminable direction and spacing.

A hand-held electrically powered cut-off tool (100, 200, 800, 1000, 1900, 2500) comprising a first part (110) and a second part (120) arranged vibrationally isolated from each other, the first part (110) comprising an interface (2510) for holding a cutting tool (130) and an electric motor (140) arranged to drive the cutting tool, wherein the first part is associated with a first mass (M1), the second part (120) comprising a battery compartment (150) for holding an electrical storage device (220) arranged to power the electric motor (140) as well as front (190) and rear (195) handles for operating the cut-off tool, wherein the second part is associated with a second mass (M2), wherein the electrical storage device (220) is associated with a third mass (M3), and wherein the cutting tool is associated with a fourth mass (M4), wherein a ratio of the second mass (M2) to the sum of the first and second masses (M1+M2) is at least 0.3, and preferably more than 0.35; wherein a ratio of a sum of the second and the third mass (M2+M3) to the sum of the first and fourth masses (M1+M4) is at least 0.6, and preferably more than 0.8 and even more preferably more than 1.0; wherein a ratio of a sum of the second and the third mass (M2+M3) to the sum of the weight of the entire device including electrical energy storage and cutting disc, is at least 0.45, and preferably more than 0.5.

A power tool includes a switch moveable between a first position enabling activation of a motor and a second position disabling the motor. The power tool includes a trigger movably coupled to a housing of the power tool between an OFF position and an ON position. The switch moves from the second position to the first position in response to the trigger moving from the OFF position to the ON position. The power tool includes a trigger lock-off pivotably coupled to the housing between a lock position and an unlock position. The trigger lock-off is engageable with the trigger to inhibit movement of the trigger from the OFF position to the ON position when the trigger lock-off is in the lock position. The trigger lock-off allows movement of the trigger from the OFF position to the ON position when the trigger lock-off is in the unlock position.

Disclosed is a chainsaw capable of making it less likely that vibrations due to driving of an electric motor and a endless movement of a saw chain are transmitted to a worker, thereby enabling the worker to become less likely to be fatigued even in work using the chainsaw. The chainsaw includes an electric motor provided inside a body casing; a guide bar provided in a front portion of the body casing in such a manner as to protrude forwardly; a saw chain provided around an outer periphery of the guide bar in an endlessly movable manner, and configured to be endlessly moved along the outer periphery of the guide bar under driving of the electric motor; a handle section provided with respect to the body casing, and configured to be gripped by a worker; and an anti-vibration member interposed between the body casing and the handle section.

A power tool (100), such as a chainsaw, comprising means (230) for driving said power tool (100) and a controller (210). The power tool comprises a movement sensor (220) and the controller (210) is configured to receive a signal from said movement sensor (220), determine if said signal is a signal indicating a movement, determine a time wherein no signal indicating a movement is received, determine if said time exceeds a time period, and if so, disable said driving means (230).

A high efficiency saw chain for a saw including a cutting link and a drive link, the cutting link and a drive link selected to provide a high efficiency saw chain for a specified power range, based on ratios of components of the chain, such as the ratio of the height of the cutter to the pitch of the chain.

A high efficiency saw chain for a saw including a cutting link and a drive link, the cutting link and a drive link selected to provide a high efficiency saw chain for a specified power range, based on ratios of components of the chain, such as the ratio of the height of the cutter to the pitch of the chain.