A component assembly jig is a jig for assembling an assembly component to a target component using a plurality of bolts. The component assembly jig includes a jig body that temporarily holds the assembly component, and a plurality of positioning guides that position a plurality of bolt through-holes of the assembly component in a plurality of screw holes of a target component. According to the above configuration, the plurality of bolt through-holes can be positioned in the plurality of screw holes using the plurality of positioning guides. Thus, the assembly component can be easily assembled to the target component with the plurality of bolts regardless of whether the working environment is good or bad.

A component assembly jig is a jig for assembling an assembly component to a target component using a plurality of bolts. The component assembly jig includes a jig body that temporarily holds the assembly component, and a plurality of positioning guides that position a plurality of bolt through-holes of the assembly component in a plurality of screw holes of a target component. According to the above configuration, the plurality of bolt through-holes can be positioned in the plurality of screw holes using the plurality of positioning guides. Thus, the assembly component can be easily assembled to the target component with the plurality of bolts regardless of whether the working environment is good or bad.

A metal wire may be provided inside a hanger portion extending with an annular shape and which is integrally formed with an outer casing. An electric power tool may be prevented from falling, etc. due to deformation or breakage of the hanger portion by being reinforced by the wire.

A hand tool machine device with a drive unit comprising at least one drive shaft, a transmission unit including at least one transmission element, a cooling unit including at least one fan element, and at least one sealing element configured to seal the transmission unit in at least on axial direction. The at least one fan element includes at least one receiving region configured to at least partially receive the at least one sealing element.

A method and apparatus comprising a structure and a connector. The structure may have a number of walls forming a channel with a first opening and a second opening. The connector may be associated with the first opening. The connector may be configured to change a size of the first opening.

A method and apparatus comprising a structure and a connector. The structure may have a number of walls forming a channel with a first opening and a second opening. The connector may be associated with the first opening. The connector may be configured to change a size of the first opening.

A fastening device includes first to third rotary sensors (position detecting unit) which are provided in a support arm and detect a position of a nut runner (fastening tool), and a main controller (controlling unit) which has a storage unit for storing a plurality of fastening positions of a chain cover, and drives the nut runner when a detection result from the first to third rotary sensors coincides with position information of the fastening position of the chain cover stored by the storage unit. Therefore, during a fastening work, an operator does not need to pull a trigger to drive and rotate the nut runner, thus reducing a burden on the operator during the fastening work.

A fastener extractor tool and a method of using said tool. The tool comprising a torque-tool body, a plurality of engagement features, and a plurality of gripping edges. The engagement features radially positioned around a rotational axis of the torque-tool body and each comprising a first slanted section, a second slanted section, and a hollow section. The first and second slanted sections terminally and oppositely connected to the hollow section and an acute cavity angle being delineated between the first and second slanted sections of each engagement feature. The method comprising providing the fastener extractor tool, engaging the torque-tool body and engagement features with a fastener, cutting a channel into the fastener with the gripping edge, and rotating the fastener with the torque-tool body.

A fastener extractor tool and a method of using said tool. The tool comprising a torque-tool body, a plurality of engagement features, and a plurality of gripping edges. The engagement features radially positioned around a rotational axis of the torque-tool body and each comprising a first slanted section, a second slanted section, and a hollow section. The first and second slanted sections terminally and oppositely connected to the hollow section and an acute cavity angle being delineated between the first and second slanted sections of each engagement feature. The method comprising providing the fastener extractor tool, engaging the torque-tool body and engagement features with a fastener, cutting a channel into the fastener with the gripping edge, and rotating the fastener with the torque-tool body.

An impact tool includes a housing, an electric motor supported in the housing, and a drive assembly for converting a continuous torque input from the motor to consecutive rotational impacts upon a workpiece capable of developing at least 1,700 ft-lbs of fastening torque. The drive assembly includes an anvil rotatable about an axis and having a head adjacent a distal end of the anvil. The head has a minimum cross-sectional width of at least 1 inch in a plane oriented transverse to the axis. The drive assembly also includes a hammer that is both rotationally and axially movable relative to the anvil for imparting the consecutive rotational impacts upon the anvil, and a spring for biasing the hammer in an axial direction toward the anvil.