Hilti Aktiengesellschaft

Ernst-Rudolf Luebkert

Pierre Pallmer

Helmut Burger

Rory Britz

Thomas Hofbrucker

Hans Appel

Stefan Schmid

Axel Fischer

Aaron Wiedner

Frank Fritsch

Kathrin Sax

Hansjoerg Schwarz

Peter Schmiddunser

Armin Oeffling

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

A hand-held power tool includes a housing (), and a tag-shaped identification element () mountable on the housing () so that it becomes visible on an outer side of the housing (), provided with an identification mark (), insertable in a receptacle () provided on the housing.

Hand-held power tool with an identification element

A hand-held power tool having a main housing () in which a tool spindle () is at least partially located, and a handle housing () on which a handle () is formed, includes a connection device () for securing the handle housing () to the main housing () and having a first connection element () with a first engagement member () loosely engageable with a second engagement member () associated with the main housing (), and a second connection element () with a handle-side locking element, a main housing side locking element, and a further locking element for formlockingly connecting the handle-side locking element and the main housing side locking element, whereby absence of loose engagement of the first and second engagement members is ensured upon formation of the formlocking connection of the handle-side and main housing side locking elements.

Hand-held power tool having main and handle housings with a connection device for connecting the housings

An electric motor includes a stator () secured in the motor housing (), a rotatable rotor (), a fan impeller () arranged on the rotor (), and an annular air duct () arranged between the fan impeller () and the rotor () and having a shroud () spaced from the impeller () by a slot having an axial width (X), a dimensionally stable, with respect to the shroud (), housing stop (), an axially, resiliently displaceable fixing element () forming a stator stop () facing in a same direction as the housing stop (), and a locking element.

Electric motor with an air duct

Growing community of inventors

Landsberg, Germany

Ernst-Rudolf Luebkert