Festool GmbH

A circular saw has a blade that moves relative to a stationary base structure during operative use of the circular saw to cut a workpiece and methods of detecting a kickback condition of such a circular saw. The circular saw includes a base structure, a user-actuated assembly, an attachment structure, and a controller. The attachment structure is configured to permit constrained relative motion between the base structure and the user-actuated assembly in a motion direction and during operative use of the circular saw to cut the workpiece. A motion sensor is configured to generate a motion signal indicative of motion of the user-actuated assembly along the motion direction. The controller is programmed to initiate a kickback response of the circular saw responsive to the motion signal being indicative of a kickback condition of the circular saw.

A connection assembly for connecting a tool head and a further machine module of a hand-guided machine tool wherein the connection assembly includes at least two connection parts following one another along a longitudinal axis and each having a connection section via which the connection parts are connectable to one another.

Circular saws include blade mounts for circular saw blades and methods of attaching circular saw blades to circular saws. The circular saws include a motor, an arbor, and a blade mount. The motor includes a motor shaft configured to rotate about a shaft rotational axis. The arbor is configured to receive a torque from the motor when the motor shaft rotates about the shaft rotational axis. The blade mount is operatively attached to the arbor and is configured to selectively and operatively attach a circular saw blade to the arbor. The blade mount includes an inner flange that includes an inner flange blade-contacting surface that faces away from the motor. The inner flange is free from any structure that projects away from the motor and also away from the inner flange blade-contacting surface.

An exoskeleton device including an exoskeleton with a base section, a support section movably coupled to the base section for supporting a body part of the human body, and an actuator device acting on the support section for providing a support force for the body part. The exoskeleton device further includes a sensor device for detecting a risk variable which includes a movement of the support section and/or a force and/or a pressure between the support section and the body part, and a control device for controlling the actuator device. The control device is configured to detect a risk state on the basis of the detected risk variable, in which risk state there is a risk of health impairment and/or damage, and to initiate a safety measure in response to the detection of the risk state, which comprises outputting a warning signal and/or counteracting the risk state.

A mobile machine tool for processing a surface of a workpiece or a room, wherein the machine tool includes a working device with a plate tool for processing the surface and a drive motor for driving the plate tool, which tool has a processing surface assigned to processing a workpiece and a machine side opposite to the processing surface, wherein intake air inflow openings are arranged on the surface to be processed for suctioning the processing surface onto the surface to be processed, which openings are flow-connected to at least one intake air outflow opening arranged on the plate tool away from the processing surface, wherein the plate tool includes at least one additional air inflow opening for the inflow of additional air, which is flow-connected to at least one additional air outflow opening arranged away from the processing surface, and wherein the machine tool includes an intake device for generating an intake air flow and/or a negative pressure at the at least one intake air outflow opening and the at least one additional air outflow opening.

The invention relates to a workpiece stop arrangement for a miter saw or sliding compound miter saw having two stops ( 20 ) disposed spaced apart from each other, wherein a spacer area ( 80 ) for the passage of a saw blade ( 76 ) is formed between the two stops ( 20 ). To improve the usability of a circular saw, provision is made for at least one of the stops ( 20 ) to have a stop piece ( 30 ) having a mount ( 33 ), to or in which an exchangeable stop piece ( 40 ) is exchangeably attached, wherein the exchangeable stop piece ( 40 ) projects at least sectionally beyond the stop piece ( 30 ) into the spacer area ( 80 ).

A hand-held power tool, in particular woodworking tool, including a housing, a handle for positioning the power tool relative to a workpiece, a reciprocating unit for holding a tool for machining a workpiece, a drive module located in the housing for driving the reciprocating unit, and a pressurized fluid dispensing assembly having an outlet area for dispensing gaseous pressurized fluid into a working area of the tool during machining of the workpiece with the tool to purge the working area to cause and/or assist a conveyance of workpiece particles from the formed depression.

A filter bag apparatus for a vacuum-cleaning unit is arrangeable in a vacuum-cleaning unit accommodation space of the unit and has a filter bag having a dust accommodation space for collecting dust. The apparatus has a closure device for closing off the bag outlet that includes a hose body arranged on a bag outlet and having a hose outlet flow-connected to the bag outlet for emptying dust out of the dust accommodation space. The body extends along a longitudinal expanse between the bag and hose outlets, and has a wrapper section between the bag and hose outlets that can be wrapped up toward the bag outlet, from a pass-through position for emptying the dust out of the dust accommodation space and is unwrapped, in particular elongated, along a wrapper path, into a wrapped position, in which the bag outlet is closed off to form a wrapper.

The invention relates to a circular saw, in particular a miter saw or sliding compound miter saw, having a base part ( 10 ), which comprises a support ( 18 ), wherein a swivel arm ( 20 ) is connected to the support ( 18 ) so as to swivel about a swivel axis ( 22 ), wherein the swivel arm ( 20 ) bears a saw head ( 40 ), which is designed to receive a saw blade ( 46 ) on a saw-blade holder ( 45 ), wherein the saw head ( 40 ) is coupled to the swivel arm ( 20 ) for swiveling about a miter axis of a miter bearing ( 34 ), wherein a protective saw blade cover ( 44 ) is provided for receiving an area of the saw blade ( 46 ), wherein a dust removal means is provided, which is connected to the protective saw blade cover ( 44 ) by a first dust guide duct ( 62 ), and wherein the dust removal means has a second dust guide duct ( 70 ), which extends transverse to the miter axis through or past the swivel arm ( 20 ). To achieve an effective removal of the chips produced during the sawing operation from the working area of the machine in such a circular saw, according to the invention provision is made for a dust collection device ( 60 ) to be attached at the end of the swivel arm ( 20 ) facing away from the saw head ( 40 ), which dust collection device comprises a collection container ( 66 ) having a collection chamber ( 66.5 ) for collecting the saw dust supplied via the first and second dust guide ducts ( 62 and 70 ).