Hilti Aktiengesellschaft

Horst Rahmsdorf

Thomas Hofbrucker

Gerd Daubinger

Thomas Bader

Markus Looser

Felix Ferlemann

Reinhard Riedl

Manfred Ludwig

Holger Wirtz

Frank Brandenburg

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 screw driving device () for a hand tool drilling device () includes a screw magazine () for successive feeding of screws or bolts (), a feeder block () that can be axially displaced against the force of a feeder spring (), which at least partially supplies screws () during the back and forth reciprocating movement of the feeder block (), and a driving tool () that can be coupled rotationally in form locked manner with a screw head (), wherein the driving tool () axially moveably receives a rotatingly driven drilling tool () in a coaxial hollow inner space and is spring biased axially by a clutch spring () relative to the screw driving device in a rotation driver position X, in which a drilling tool tip () is axially spaced from the screw head () and is coupled rotationally form locked with the driving tool ().

Screw driving device

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 ( ).

Screw driving tool

A depth stop for a hand-held screw driving tool including a housing, a drive located in the housing for rotating a spindle about a spindle axis, and a chuck for receiving a working tool, connected with the housing and projecting from the housing in an axial direction defined by the spindle axis with the depth stop (,) including a sleeve-shaped element for surrounding the chuck, connectable with the tool housing (,) and having at lease one axially extending opening formed in a wall of the sleeve-shaped element and piercing the wall through an entire wall thickness, and with the opening having, at its end remote from the housing (,) an entrance region (,) open in the axial direction.

Depth stop for a hand-held screw driving tool

A rotary tool for imparting rotation to a drill or an attachment element (2), and including a rotation-imparting element (14), and apparatus (6) for storing a cooling medium, and a conduit (7) for delivering the cooling medium to an operational side end region of the drill or of the attachment element (2).

Growing community of inventors

Munich, Germany

Horst Rahmsdorf