An actuation unit for a capping head for the application of caps on containers or bottles, as well as to a capping head using such a unit, are provided. The actuation unit for a capping head for the application of caps on containers or bottles comprises at least two actuators, of which a first actuator is adapted to impart a translational displacement along a closing axis and a second actuator is adapted to impart a rotational movement about the closing axis, each actuator of the at least two actuators causing the rotation of a first shaft and a second shaft, respectively, both arranged coaxial to the closing axis, and is characterized in that the shafts of the at least two actuators are placed side by side along the axis and are mutually connected by means of at least one rotation decoupling joint.

A device is provided for monitoring the compaction of concrete introduced into a slipform of a slipform paver by means of at least one concrete compacting device that has an asynchronous motor for driving an unbalanced mass which generates vibrations. The monitoring device comprises an apparatus for monitoring the stator current of the asynchronous motor, the apparatus being configured such that a change in the compaction of the concrete is determined based on an analysis of the stator current. The apparatus for monitoring the stator current of the asynchronous motor is preferably configured such that the amplitude spectrum of the stator current is determined in order to analyse the stator current. It is advantageous that the compaction of the concrete is not monitored using sensors which are exposed to harsh ambient conditions during operation of the slipform paver.

Provided is a user-friendly power tool. The power tool 1 comprises: a battery pack mount 2c to which a battery pack 4 can be attached and detached; and a cover 17 that can cover the battery pack 4, mounted on the battery pack mount 2c, and the battery pack mount 2c so as to allow opening and closing. The wall 23 of the battery pack mount 2c is provided with a correcting part 23a that is capable of correcting inward warping of both the left and right side surfaces of the cover 17, which are the longitudinal direction surfaces. The lower edge of the correcting part 23a has a rounded shape.

A display device is disclosed. The display device includes a housing, a roller installed inside the housing, a first bar positioned on an upper side of the roller to be opposite to the roller, a link connected to the first bar and the housing and lifting the first bar, a second bar positioned opposite the first bar and fastened to the first bar, a plate including a first part wound or unwound from the roller and a second part extended rearward from the first part and fixed between the first bar and the second bar, and a display panel provided in the first part of the plate.

A display device is disclosed. The display device includes a housing, a roller installed inside the housing, a first bar positioned on an upper side of the roller to be opposite to the roller, a link connected to the first bar and the housing and lifting the first bar, a second bar positioned opposite the first bar and fastened to the first bar, a plate including a first part wound or unwound from the roller and a second part extended rearward from the first part and fixed between the first bar and the second bar, and a display panel provided in the first part of the plate.

An electric hollow-shaft motor having a hollow shaft which is able to be driven in rotation, and a detection device which is configured to detect the rotational position of the hollow shaft, wherein the detection device includes a magnet which is arranged on the hollow shaft, and a fixed magnetic field sensor which is arranged within the hollow shaft, wherein the magnetic field sensor is configured to detect a magnetic field generated by the magnet.

An electric hollow-shaft motor having a hollow shaft which is able to be driven in rotation, and a detection device which is configured to detect the rotational position of the hollow shaft, wherein the detection device includes a magnet which is arranged on the hollow shaft, and a fixed magnetic field sensor which is arranged within the hollow shaft, wherein the magnetic field sensor is configured to detect a magnetic field generated by the magnet.

A linear-motor type transport device for transporting material for an absorbent article includes: a shaft portion that has an axial direction, a radial direction, and a circumferential direction; a pair of guide portions that is disposed on the shaft portion with a predetermined axial-direction space between the guide portions and that forms an orbital transport path that extends along the circumferential direction; a mobile unit that moves on the transport path along the guide portions while supporting a transport head rotatably about a rotation axis; a cam mechanism that rotates the transport head about the rotation axis through a predetermined angle when the mobile unit is moved on the transport path; and a controller that moves the mobile unit by supplying currents to conductors and generating a propulsive force between one of the conductors and a magnet that is disposed on the mobile unit.

A linear-motor type transport device for transporting material for an absorbent article includes: a shaft portion that has an axial direction, a radial direction, and a circumferential direction; a pair of guide portions that is disposed on the shaft portion with a predetermined axial-direction space between the guide portions and that forms an orbital transport path that extends along the circumferential direction; a mobile unit that moves on the transport path along the guide portions while supporting a transport head rotatably about a rotation axis; a cam mechanism that rotates the transport head about the rotation axis through a predetermined angle when the mobile unit is moved on the transport path; and a controller that moves the mobile unit by supplying currents to conductors and generating a propulsive force between one of the conductors and a magnet that is disposed on the mobile unit.

An electric motor for reciprocating an object along a rod having a predetermined length is provided, comprising: a housing; a rotor unit that is mounted to the inside of the housing via a bearing to be rotatable and comprises a rotor shaft, which is axially-coupled to the rod to linearly reciprocate along the rod during rotation, and a plurality of magnets mounted along the circumference direction of the rotor shaft; and a stator unit comprising at least one stator core and a coil, the at least one stator core comprising a yoke portion of a closed loop shape that is built in the housing so as to surround the circumference of the rotor unit, and a plurality of slot portions extending from the yoke portion toward the rotor, and the coil being wound around at least one slot portion among the plurality of slot portions.