Hilti Aktiengesellschaft

Thomas Hofbrucker

Thomas Bader

Markus Looser

Rory Britz

Aaron Wiedner

Rainer Ontl

Horst Rahmsdorf

Bernhard Liebert

Markus Hartmann

Josef Obermeier

Martin Richter

Manfred Ludwig

Stefan Schmid

Eduard Pfeiffer

Frank Fritsch

Armin Below

Ernst-Rudolf Luebkert

Thomas Mahler

Valentin Keller

Kathrin Sax

Jerome Jaromin

Hüseyin Cicekci

Mnfred Ludwig

Hans-Werner Bongus-Ambrosius

Kent Karlsson

Pascal Schilling

A power tool for chiseling and drilling includes a housing, a motor disposed inside the housing, and a pneumatic percussion mechanism. An operation mode selector switch is disposed on the housing and has a first operation mode setting and a second operation mode setting where the first operation mode setting activates the pneumatic percussion mechanism and the second operation mode setting deactivates the pneumatic percussion mechanism. A valve has an inlet-port formed inside the guiding tube and an outlet-port formed outside the guiding tube where the valve is connected to the operation mode selector switch. The valve is closed in the first operation mode setting which disables an air exchange between the inlet-port and the outlet-port and the valve is open in the second operation mode setting which enables the air exchange between the inlet-port and the outlet-port.

Power tool

The handheld power tool has a tool receptacle for accommodating a tool on a working axis () and an electric motor (). A pneumatic percussion mechanism () has an exciter, which is moved back-and-forth by the motor () periodically in parallel to the working axis (), a striker (), which is movable on the working axis () and is coupled via a pneumatic spring () to the exciter, and an anvil (), which is situated movably on the working axis () and is situated downstream from the striker () in the percussion direction (). The anvil () has a cylindrical anvil section () having a diameter and multiple channels () extending over the entire length () of the anvil section (). A cross-sectional area of the anvil section () is at most 5% less than a circular area defined by the diameter.

Handheld power tool

A rail has a guide surface on which the locking block is guided in a bearing manner between a position locking the bar, in which the toothed side engages in the toothed long side, and an unlocked position, in which the toothed side is not engaged with the toothed long side. A spring pretensions the locking block into the locking position. The guided side and/or the guide surface have a flank that is inclined with respect to the bar axis such that the locking block is forced in the direction of the bar in the event of a movement along the bar axis.

Side handle

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

An electrical hand-held power tool () includes a housing () in which a drive () is located, a ventilator () for forming a suction region () and a pressure region () in the housing () which provide for an air flow (L) that serves for cooling at least parts of the drive (), and a separation element () arranged between the suction region () and the pressure region () and fixedly secured in the housing (), the separation element () having an opening for forming a limited wire passage region () from the suction region () into the pressure region ().

Hand-held power tool with grounding

A drill adapter for a power screwdriver and including a locking device for releasably securing the drill adapter () on the support region () of the screwdriver () and having a push-on sleeve () supportable on the support region () and at least one engagement member () for releasably securing the push-on sleeve () on the support region, and an element for actuating the drive clutch () of the screwdriver () via the tool spindle () and projecting into a receiving space (), which is partially limited by the push-on sleeve () and is open at one side, and having an axial stop () for engaging the tool spindle (), with the at least one engagement member () projecting, in its locking position, beyond an inner surface () of the push-on sleeve () for establishing an axial formlocking connection between the push-on sleeve () and the support region () of the screwdriver () and which provides for actuation of the drive clutch () with actuating element.

Drill adapter for a power screwdriver

A motor-switch arrangement for a hand-held power tool includes a drive motor (), an actuating switch () with a contact plug (), and an adapter () arranged between the contact plug () and the drive motor () and having a plug connecter () cooperating with the counter-plug contact element () of the drive motor () for establishing a first electrical plug connection (a) of the adapter (), and a counter-plug connecter () electrically connected with the plug connecter () and cooperating with a plug contact element () of the contact plug () for establishing a second electrical plug connection (b) of the adapter ().

Motor-switch arrangement for a hand-held power tool

A hand-held power tool including a housing () having a handle (), and a holding device () having a catch element () with a free end () for suspending the power tool, with the free end () having a main axis (K) intersecting a normal live (N) that extends transverse to the tool plane which is defined by the plane of the handle and the operational direction of the tool, and passes through the center of gravity (S) of the tool.

Hand-held power tool with a holding device

A hand-held power tool including a tool spindle () having a motor () for driving the tool spindle (), a handle () having a forwardly inclined position in which the handle (), starting from the spindle axis (W) is inclined, at least for a most part, in an operational direction (A) of the power tool (), and an actuator () provided on the handle () for switching the motor () on and off.

Handle for a hand-held power tool

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 ( ).

Screw driving tool

A drilling and/or chiseling device has a drive spindle ( ) for a drilling and/or chiseling tool with two ring gears ( ) of different sizes, a countershaft ( ) with a drive pinion ( ), a wobble drive ( ) for a striking mechanism, mounted on the countershaft ( ), and a switching sleeve ( ), mounted on the countershaft ( ) so that it can be shifted axially by a switching element ( ). The switching element displaces the switching sleeve ( ) into four different modes of operation of the drilling and/or chiseling device.

Growing community of inventors

Mammendorf, Germany

Thomas Hofbrucker