A dust collecting system includes a power tool and a dust collector. The power tool is configured to perform processing operation on a workpiece by driving a tool accessory. The dust collector is configured to collect dust generated by the processing operation. The power tool includes a first motor and a driving mechanism configured to drive the tool accessory by power of the first motor. The dust collector includes a second motor and a fan configured to be rotationally driven by the second motor to generate air flow for collecting dust. The dust collecting system includes a first control device configured to control a rotation speed of the second motor according to a driving state of the power tool.

A dust collecting system includes a power tool configured to perform processing operation on a workpiece by driving a tool accessory and a dust collector configured to collect dust generated by the processing operation. The power tool includes a first motor, a driving mechanism, a body housing, a first detecting device, an operation member and a second detecting device. The first detecting device is configured to detect an operation of pressing the tool accessory against the workpiece. The operation member is configured to be externally operated by a user. The second detecting device is configured to detect an operation of the operation member. The dust collector includes a second motor and a fan. The dust collecting system includes a first control device configured to control driving of the second motor based on detection results of the first detecting device and the second detecting device.

A wall hanging device for marking the location of wall mounting fasteners is provided. The wall hanging device intrinsically locates connection points along a wall that correspond with connection points along an article to be hung on the wall. The systemic device provides two opposing surfaces, each surface providing corresponding guide markings. Each surface also has adhesive elements so that the device can first be adhered to the article and then transferred to the wall by way of urging the article against the wall, thereby ensuring that one or more preselected connection points along the article, first associated with one surface's guide marking(s), are intrinsically located on the wall by way of the other surface's corresponding guide markings after pulling away the article, leaving the temporarily adhered device to the wall. The device also provides a foldable pocket for capturing debris resulting from the installation of the mounting fasteners.

A vacuum dust extraction system includes a snorkel coupled to the implement end of an air tool, a dust bellows surrounding the air tool's implement and fastened to the outboard end of the snorkel, a pneumatically powered water filtration industrial vacuum, and a suction hose coupling the snorkel to the vacuum. The apparatus features an improved coupling arrangement for attaching the snorkel to the barrel of the tool driver that permits the apparatus to work with a wide assortment of air tools, and an improved water filtration apparatus housed in the vacuum.

A dust collecting system includes a power tool and a dust collector, The dust collector includes a body, a sliding part, a biasing member, a lock member and an actuator. The body is configured to be removably attached to the power tool. The sliding part is held by the body so as to be slidable along a sliding axis. The biasing member is configured to bias the sliding part forward to hold the sliding part in a first position. The lock member is configured to lock the sliding part relative to the body in a second position. The actuator is configured to unlock the sliding part locked by the lock member, by operating in response to a motor-starting operation for the power tool by a user.

To provide an improved technique for improving operability in an operation using a power tool with a dust collector attached thereto, a hammer drill to which a dust collector is attached has a body and a handle. The dust collector has a dust collecting part and a male plug. The dust collector is attached to the hammer drill by connecting the male plug to the handle of the hammer drill.

A dust and debris extraction device for the purpose of capturing dust and debris created by a chisel held by a power tool has an opening for a chisel to pass through at the front and is guided upward by a sleeve that passes out the top of the body of the device. The extraction end of the device has a locking mechanism to keep a hose going to a negative air source attached. The dust and debris extraction device may either free float on the shank of the chisel or be fixed to the power tool with a bracket.

A dust collector for electric power tool includes a casing, a ring-shaped suction opening, a dust collecting route, and a filter. The suction opening protrudes forward from the casing. The tool bit of the electric power tool is insertable into the suction opening in a state where the suction opening is brought into contact with a surface to be processed. The dust collecting route is formed within the casing and guides an air suctioned from the suction opening to a dust collection portion in the casing. The filter is disposed in the dust collection portion to capture dust suctioned with the air. On the dust collecting route in the dust collection portion, a first filter and a second filter are disposed. The first filter includes a dust collecting chamber partitioned inside the dust collection portion. The second filter is arranged outside the first filter independently from the first filter.

A dust collection nozzle extends from the front of a fixing cover parallel to a base below an upper end of an electric motor. Heavy and large cutting dust can be immediately collected from an area relatively close to a cutting position of a portable cutting device cutting a workpiece immediately after dust is generated due to the cutting, which can in turn improve dust collection efficiency of a dust collection device to which the dust collection nozzle is attached.