Hilti Aktiengesellschaft

Markus Looser

Thomas Hofbrucker

Thomas Bader

Horst Rahmsdorf

Bernhard Liebert

Konstantin Baxivanelis

Manfred Ludwig

Christian Koschel

Johannes Stempfhuber

Bernhard Link

Thomas Mueller

Germar Meiendres

Günter Haas

Olaf Schadoffsky

Xi Zhou

Mnfred Ludwig

A system includes a power tool and an automatic safety system communicatively coupled to the power tool. The automatic safety system includes one or more sensors disposed about the power tool, where the one or more sensors are configured to gather data about a safety parameter related to an operation of the power tool. The automatic safety system also includes a main detector configured to receive the data gathered by the one or more sensors. The main detector is configured to analyze the received data to determine whether to unlock the power tool for operation.

Systems and methods for an automatic safety protocol in electrical tools

The screwdriving power tool includes a hollow spindle () rotatably supported in the tool housing () and driven by a motor (), a clutch () that rotatably connects and disconnects the hollow spindle () with and from the motor (), respectively, in engagement and disengagement positions of the clutch (), a screwing-in spindle () connected with a chuck () for a working tool () and connected with the hollow spindle () for a joint rotation therewith and for an axial displacement relative thereto, and a percussion mechanism () for applying a pulsed axial force to the screwing-in spindle (), with the clutch () being brought into its engagement position by the screwing-in spindle () by being displaced against a biasing force of the clutch springs (), and being locked in its engagement position.

Screwdriving power tool with an axially operated percussion mechanism

A method for controlling a motor () which drives a disk-shaped tool () of a power tool () and to which a motor voltage in the amount of a nominal value is applied in an 'on' position of a motor switch (), includes determination of an actual motor current (IM) applied to the motor () and comparing it to a first predetermined threshold (GW), and automatically triggering of a control process for protecting the motor () when an overload condition which is defined in that the first predetermined threshold (GW) is exceeded beyond a first predetermined limiting time period (grDt), is met, the control process including reduction of the motor voltage applied to the motor () by a magnitude that can be perceived by the user as a choke value.

Method of controlling a motor

A fastener guide () for use in a power-operated drive in device (), particularly of a stand-up tool (), having a guide path () in which a plurality of fasteners () can be received and which has a device-side opening () and a free opening (), the guide path () being curved toward the device-side opening () proceeding from the free opening (). The fastener guide () can be mounted on the drive in device () in a detachable manner by connection means, and the guide path () has a fall-out prevention device () at each of the two openings ().

Fastener guide

A power drive-in tool () for use in a stand-up tool includes a holding device () arranged in a front, in a drive-in direction, section of the drive-in tool and in which a fastening element () can be automatically received and released, a guide () for the fastening element () associated with the driving-tool () and connected to the holding device () by a feed track (), an intermediate securing device () located in the feed track () and in which the fastening element () is held before being fed toward the holding device () and which is provided with a side stop displaceable into the feed track ().

Power drive-in tool

A screw driving tool including a housing ( ), a hollow spindle ( ) rotatably supported in the housing ( ) with a possibility of a limited axial displacement relative thereto, a screw-in spindle at least partially extending in the hollow cylinder ( ), connected thereto for joint rotation therewith, and supported for a limited axial displacement relative thereto, an impact mass ( ) for displacing the screw-in-spindle ( ) in a screw-in direction, a drive motor ( ) for rotating the screw-in spindle ( ), and a clutch ( ) located between the hollow spindle ( ) and the drive motor output shaft ( ) for transmitting rotational movement to the hollow spindle ( ).

Growing community of inventors

Weilheim, Germany

Markus Looser