A dust collector for an electric power tool includes a main body case, a tubular sliding portion, and a dust collection portion. The main body case is mountable to an electric power tool. The tubular sliding portion is disposed on the main body case. The sliding portion includes a nozzle on a front end thereof. The nozzle includes a suction opening. The dust collection portion is configured to accumulate dust suctioned from the nozzle. The sliding portion includes a guided portion supported by a guiding portion disposed on the main body case. The guided portion is supported slidably in a front-rear direction, and the guiding portion and the guided portion are disposed in a region on a half side with respect to a line on a cross section passing through a center of the sliding portion.

A cutting tool includes a body portion having a bar shape extending from a first end to a second end, and a sensor unit arranged on a surface of the body portion. The surface of the body portion includes a first surface, a second surface, and a third surface. The sensor unit includes a first strain sensor arranged on any of the first surface, the second surface, and the third surface, a board module electrically connected to the first strain sensor, and a wireless communication unit mounted on the board module and transmitting a signal containing information on strain of the body portion detected by the first strain sensor to the outside. The board module includes a first portion arranged on the first surface, a second portion arranged on the second surface, and a connecting portion electrically connecting the first portion to the second portion.

A dust collector for an electric power tool includes a main body case, a tubular sliding portion, and a dust collection portion. The main body case is mountable to an electric power tool. The tubular sliding portion is disposed on the main body case. The sliding portion includes a nozzle on a front end thereof. The nozzle includes a suction opening. The dust collection portion is configured to accumulate dust suctioned from the nozzle. The sliding portion includes a guided portion supported by a guiding portion disposed on the main body case. The guided portion is supported slidably in a front-rear direction, and the guiding portion and the guided portion are disposed in a region on a half side with respect to a line on a cross section passing through a center of the sliding portion.

A description is given of an extraction device (1) for a core drill, including a housing (4) which has at least one cavity (7), a cover (2) and a wall (3) connected to the cover (2) around the periphery. An extraction nozzle (5) connected to the housing (4) is provided, designed for attaching the extraction device (1) to a suction device. The wall (3) has at least one inlet opening (44, 45), by way of which the cavity (7) is connected to the surroundings (U). A sealing device (50, 51), which can be moved between an inoperative position, lying substantially against the wall (3) of the housing (4), and an operative position, pivoted with respect to the inoperative position about a pivot axis (57, 58), is connected to the housing (4) on a side of the wall (3) that is facing away from the cavity (7).

A description is given of an extraction device (1) for a core drill, including a housing (4) which has at least one cavity (7), a cover (2) and a wall (3) connected to the cover (2) around the periphery. An extraction nozzle (5) connected to the housing (4) is provided, designed for attaching the extraction device (1) to a suction device. The wall (3) has at least one inlet opening (44, 45), by way of which the cavity (7) is connected to the surroundings (U). The wall (3) has a first substantially planar wall region (10) and a second substantially planar wall region (11), wherein a surface (14) of the first wall region (10) that is facing away from the cavity (7) forms an obtuse angle (16) with a surface (15) of the second wall region (11) that is facing away from the cavity (7).

A debris collecting rotary tool attachment for collecting debris during rotary tool use includes a shell that comprises a wall. The wall extends from a top to a bottom of the shell and has an inner face. The inner face is tackified, such that the inner face is configured to sequester debris on the inner face of the shell. The top and the bottom are open, defining respective perimeters. A fastener is coupled to the bottom and extends around the perimeter of the bottom. The fastener is configured to sealably couple the shell to a chuck end of a rotary tool. The shell is positioned around a cutting tool secured in the chuck of the rotary tool. The inner face is tackified to sequester debris generated during operation of the rotary tool.

A debris collecting rotary tool attachment for collecting debris during rotary tool use includes a shell that comprises a wall. The wall extends from a top to a bottom of the shell and has an inner face. The inner face is tackified, such that the inner face is configured to sequester debris on the inner face of the shell. The top and the bottom are open, defining respective perimeters. A fastener is coupled to the bottom and extends around the perimeter of the bottom. The fastener is configured to sealably couple the shell to a chuck end of a rotary tool. The shell is positioned around a cutting tool secured in the chuck of the rotary tool. The inner face is tackified to sequester debris generated during operation of the rotary tool.

A sawing accessory for a drill, which includes a cutting member that is connected to the drill for axial rotation about an axis of rotation. The cutting member has a plate and two or more blades connected to the plate. The blades depend from the plate. The blades are curved inwardly towards the axis of rotation. A spring arrangement interconnects the blades and is connected to the cutting member. The cutting member is configured such that a rotational cutting force which is applied to a workpiece sheet creates a curved cut in the sheet.

A cutting tool may include a base body, a tip, a sensor, and a cover. The base body may have a shank portion extending in a first direction, a fixation portion, and a recess opening at an outside surface of the shank portion. The tip may be fixed to the fixation portion and may have a cutting edge. The sensor may be positioned inside the recess. The cover may close the recess. Among peripheral surfaces of the shank portion, a first area may face one side in a second direction that is a direction orthogonal to the first direction, and the cutting edge may be positioned further toward the one side in the second direction from the first area. The entirety of the cover may be positioned further toward the other side in the second direction from the cutting edge.

A sawing accessory for a drill, which includes a cutting member that is connected to the drill for axial rotation about an axis of rotation. The cutting member has a plate and two or more blades connected to the plate. The blades depend from the plate. The blades are curved inwardly towards the axis of rotation. A spring arrangement interconnects the blades and is connected to the cutting member. The cutting member is configured such that a rotational cutting force which is applied to a workpiece sheet creates a curved cut in the sheet.