In one embodiment a power-tool operating device includes an operating unit that can be actuated by an operator. The power-tool operating device further includes an electronic unit to switch at least one energy supply of a drive unit based on the actuation of the operating element. The electronic unit has a locking switching function and a dead-man's switching function that can be selected at least partly automatically based on at least one of an actuation characteristic quantity of the operating element and sensed sensor characteristic quantity.

Described is a management apparatus for safeguarding users during use of apparatuses that include a part in motion. The management apparatus includes a management device that manages the part the motion during use of the management apparatus. The management device is configurable between an enabling condition of the motion and a condition of interrupting the motion. The management apparatus may also include a device for measuring at least one biometric value associated with the body of the user while using the management device and/or the apparatus that includes a part in motion. The management device may also include a processing unit operatively connected to the management device and to the measuring device. The processing unit is configured to interrupt the movement of the part in motion when the measured biometric value moves away from reference biometric value.

An auto-feeding permanent magnet drill comprising a first permanent magnet capable of being removeably coupled to a magnetic material. A coupler plate couples to the first permanent magnet. A drill frame couples to the coupler plate, the coupler plate providing an interface to couple the first permanent magnet to the frame. User interfaces are provided to enable control for powering the drill, enabling a drill or cutter bit auto-feed feature, enabling a lubrication system and enabling a mechanical adjustment system. An electric drill is coupled to the frame, the electric drill coupled to the auto-feed feature and electronically coupled to the user interfaces. A lubrication reservoir couples to a second permanent magnet capable of coupling the lubrication reservoir to a magnetic material or work surface. A flexible distribution tube delivers lubricant from the lubrication reservoir to a nozzle, the nozzle oriented towards the cutting surface and capable of distributing lubricating fluid to the cutting surface or rotating drill bit components during a drilling operation.

A lathe or other rotating machine includes a chuck for holding a work piece or tool. The chuck is operated between grasping and releasing positions. A chuck guard is mounted on a housing of the rotating machine. The chuck guard has a transparent window and is mounted for pivoting movement between a position covering the chuck and a position exposing the chuck. A chuck guard extension with a window is attached at a front lower end of the chuck guard.

A lathe or other rotating machine includes a chuck for holding a work piece or tool. The chuck is operated between grasping and releasing positions. At least one non-slip mat rests on the housing of the rotating machine, including raised edges.