A portable cutting device having a cutting tool for cutting a material. The cutting device includes a motor driving the cutting tool and a shroud at least partially enclosing the cutting tool. The shroud defines a debris accumulation chamber for gathering debris created by the cutting tool cutting the material. An impeller is operatively coupled to the motor and driven by the motor to create suction pressure to draw the debris out of the debris accumulation chamber and into a collection bag.

A portable cutting device having a cutting tool for cutting a material. The cutting device includes a motor driving the cutting tool and a shroud at least partially enclosing the cutting tool. The shroud defines a debris accumulation chamber for gathering debris created by the cutting tool cutting the material. An impeller is operatively coupled to the motor and driven by the motor to create suction pressure to draw the debris out of the debris accumulation chamber and into a collection bag.

A handheld cut-off saw (300) for cutting concrete and stone, the handheld cut-off saw comprising a drive arrangement (100, 200, 600, 800) for driving a circular cutting tool (110), the drive arrangement comprising: a belt drive portion (120) comprising a first pulley (121) and a second pulley (122), wherein the first pulley is arranged to be powered by a power source (130) and to drive the second pulley via a belt (123), wherein the second pulley (122) has a larger pitch diameter than the first pulley (121); and a gear transmission portion (140) comprising a first gearwheel (141) and a second gearwheel (142), wherein the first gearwheel (141) is co-axially connected to the second pulley (122) and radially connected to the second gearwheel (142), and wherein the second gearwheel (142) is arranged to be co-axially connected to the circular cutting tool (110).

A mobile machine tool (10), namely a manually-operated machine tool or semi-stationary machine tool, for machining a workpiece (W), wherein the machine tool has a plate-like guide element (30) with a guide surface (32) for guiding the machine tool on the workpiece (W) or the workpiece (W) on the machine tool, wherein the machine tool has a drive unit (11) with a drive motor (13) for driving a tool holder (14) arranged on the drive unit (11), wherein the drive unit (11) is, by means of a bearing arrangement (35), mounted adjustably on the guide element (30) in order to adjust at least two adjustment positions (S0, S1, S2) of the tool holder (14) relative to the guide surface (32) in which a work tool (15) arranged on the tool holder (14), penetrates into the workpiece (W), to different penetration depths. The machine tool (10) is provided with a height measuring device (95) for detecting a height (H) of the workpiece (W), wherein the height corresponds to a distance between an upper side (WO) of the workpiece which is to be penetrated by the work tool (15) and a workpiece underside (WU) of the workpiece (W) opposite the upper side of the workpiece (W).

A guided circular saw system having a track and a ramp that is connected to a benchtop by a pair of hinge members. Hinge members are formed of a top section, a middle section and a bottom section and facilitate raising and lowering of the track in a quick and easy manner without tools. The track is raised to facilitate placing a workpiece under the track and then the track is lowered in place thereby engaging and holding the workpiece in place. A sled attached to a cutting device and the sled and cutting device slides along the track thereby cutting the workpiece. The track includes sacrificial grip strips that extend along the sides of the track and include an upper layer of material that is rigid and a lower layer of material that is compressible and has a high coefficient of friction and thereby holds the workpiece in place.

A guided circular saw system having a track and a ramp that is connected to a benchtop by a pair of hinge members. Hinge members are formed of a top section, a middle section and a bottom section and facilitate raising and lowering of the track in a quick and easy manner without tools. The track is raised to facilitate placing a workpiece under the track and then the track is lowered in place thereby engaging and holding the workpiece in place. A sled attached to a cutting device and the sled and cutting device slides along the track thereby cutting the workpiece. The track includes sacrificial grip strips that extend along the sides of the track and include an upper layer of material that is rigid and a lower layer of material that is compressible and has a high coefficient of friction and thereby holds the workpiece in place.

A circular saw comprising a shoe including an upper surface and an opposite, lower surface, and a saw unit. The saw unit includes a circular saw blade, a blade guard, and a transparent blade window. The blade guard encloses a portion of the saw blade. The blade guard encloses a portion of the saw blade and has a cutout adjacent a bottom side of the blade guard and a slot above the cutout. The transparent blade window is configured to be received in the cutout to provide a user with a visual indication of the saw blade. The blade window includes a lock tab confined for sliding movement within a first portion of the slot and removable from the slot when aligned with a second portion of the slot to remove the blade window from the blade guard.

A circular saw comprising a shoe including an upper surface and an opposite, lower surface, and a saw unit. The saw unit includes a circular saw blade, a blade guard, and a transparent blade window. The blade guard encloses a portion of the saw blade. The blade guard encloses a portion of the saw blade and has a cutout adjacent a bottom side of the blade guard and a slot above the cutout. The transparent blade window is configured to be received in the cutout to provide a user with a visual indication of the saw blade. The blade window includes a lock tab confined for sliding movement within a first portion of the slot and removable from the slot when aligned with a second portion of the slot to remove the blade window from the blade guard.

A portable circular saw for cutting metal, a dust collection efficiency of cutting dust blown up from a cutting position into a cutting dust collection box is improved. A distance between in inner wall surface of a fixing cover and a tooth tip of a circular saw blade is set to longer than a distance between the tooth tip and a tooth bottom and also longer than twice as long as the distance. Furthermore, a distance between a front end of a window in a base and the tooth tip of the circular saw blade is set longer than the distance between the tooth tip and a tooth bottom and shorter than twice the distance.

A power tool with a rotatable tool designed as a saw blade or a milling cutter, including a sensor device for detecting a mechanical quantity, the mechanical quantity having a force, an acceleration, a velocity, a deflection, a deformation and/or a mechanical stress, and the mechanical quantity being dependent on a force emanating from the tool, and a control device communicatively coupled to the sensor device, which control device is adapted to recognize a kickback event based on the detected mechanical quantity, where the control device is adapted to selectively determine a first recognition function or a second recognition function different from the first recognition function based on a function determination information, and to perform the recognition of the kickback event based on the detected mechanical quantity using the determined recognition function.