Hilti Aktiengesellschaft

Olaf Koch

Matthias Keith

Karl-Heinz Hofmann

Uto Plank

Stefan Hammerstingl

Werner Britten

Alexander Buchenau

Daniela Lachica Koch

Rainer Batliner

Guenther Domani

Josef Starkmann

Thorsten Assel

Markus Sommer

Jerome Jaromin

Dieter Kraus

Klaus Hoeggerl

Theo Kiesel

Walter Martinez De Virgala Kalitta

Helene Kaps

Eric Filip

Joachim Woerz

Ali Shadavakhsh

Vera Nuebel

Bernhard Liebert

Klaus Höggerl

A handheld power tool has a monostable operating buttonwhich has a stable switching position and a pressed switching position. A catchwhich can be pivoted between a releasing position and a locking position in a pivoting directionis provided, wherein the catch, in the locking position, stops the monostable operating buttonin the pressed switching position. An operating knobcan be moved by the user in a shifting directionwhich is perpendicular to the pivoting direction. The catchis attached to the operating knobby means of a joint. A slotted linkconverts a movement of the catchalong the shifting directioninto a pivoting movement in the pivoting direction

Hand-held power tool

An assembly includes a side handle for a hand-held power tool and includes an eyelet device which includes an eyelet portion which is configured to be connected to a safety belt, wherein the side handle includes a clamping ring which is configured to attach the side handle to a round portion of the hand-held power tool, and wherein the eyelet device is configured to be attached to the clamping ring.

Arrangement for a hand-held power tool, and hand-held power tool

A hand-held power tool having a motor-driven impact mechanism and monostable operating button. A locking switch for the monostable operating button has a sliding direction, an actuating knob, a catch and a sliding block, wherein the actuating knob is able to be moved by the user in the sliding direction from a releasing position to a locking position. The catch is pivotable in a pivoting direction perpendicular to the switching direction between a first position and a second position. The catch is disengaged from the operating buttonin the first position and the catch engages in the operating button in the second position, arresting the operating button in the pressed position. The catch has, on a side facing in the pivoting direction, a slotted-guide face that is inclined with respect to the sliding direction. The sliding block bears on the slotted-guide face.

A portable power tool is disclosed. The tool has a tool holder in which a tool can be moveably inserted on a working axis in a striking direction. A percussion mechanism has a striker coupled via a pneumatic chamber to an exciter moved periodically along the working axis and an intermediate striker arranged in the striking direction downstream from striker. The intermediate striker is guided in a slide bearing with a tolerance coaxially to the working axis. The intermediate striker has a ring-shaped bead. A hollow-cylindrical backstop is arranged in the striking direction upstream from the bead. The backstop is moveably guided on a sliding surface with radial play along working axis. The radial play is at least three times as large as a tolerance of the guide of the intermediate striker in the slide bearing.

Portable power tool

A hand-held machine tool is provided. The hand-held machine tool includes a striking element that is accelerated along a working axis, and a guide for the striking element. A cushioning damper limits a motion of the striking element along the working axis and has an elastic damping ring. The damping ring has grooves running on at least one face side radial to the working axis.

Hand-held machine tool

The tool holder according to the invention for a chipping hammer has a tool receptacle for receiving a tool and a tool securing device for securing the tool in the tool receptacle. The tool securing device provides a shaft having an eccentrically arranged mandrel and at least one end piece and a bar having at least one eye in which the end piece engages in a form-fitting manner. The tool securing device is pivotable into at least one first position for inserting and removing the tool and into at least one second position for securing the tool. The eye has a non-circular cross-section.

Tool holder

A drill, which is used in a hammer drill for drilling holes in stone, concrete and the like, includes a one-piece drilling head () formed of a hard material and provided, at its first end (), with at least one main bit having a tip () and at least one cutting structure () integral to the one-piece drilling head (), and at a second end () located opposite the first end (), with a bottom surface () for the mounting the drilling head () on the drill stem (), and having a plurality of axially extending through-grooves () for removing drillings produced during a drilling process and having a cross-section which increases, at least regionwise, in a direction toward the bottom surface () of the drilling head ().

Drill

A hand-held power tool includes two vibration-damped handles (), two handle attachment axles () for securing the two handles () on the tool outer housing (), respectively, and extending at an angle to respective longitudinal axes () of respective handles (), each handle attachment axle being surrounded, at least in some areas, by the mounting section () of the respective handle (), a damping sleeve () formed of an elastic material and provided between the mounting section () of the respective handle () and the respective handle attachment axle (), with the damping sleeve () forming a first damping element, and a damping body () provided on a free end () of each handle () and forming a second damping element and having an extension (D) in a radial, with respect to the handle longitudinal axis, direction that is greater than a minimal radial extension (T) of the handle () at its free, second end.

A hard material insert () for a drill (') includes an axially central reinforcement () provided in the insert, and two diametrically opposite, radial arms () each having a cross-section tapering radially outwardly, opposite free side () and connection side (), with the free and connection sides () of one of the radial arms () being arranged alternatively to the free and connection sides of another of the radial arms (), and a concave recess () provided on the connection side ().

Hard material insert for a drill and a drill with the hard material insert

A rotary-percussion drill includes a four-start helical shaft () having a fourfold rotationally and mirror-symmetrical helix cross-section, with radially projecting convexly formed helical webs () extending from a concave groove bottom () up to the envelope circle () and having an undercut () with respect to a web width (S).

Rotary-percussion drill with a four-start helical shaft

A solid hard material head for a percussion drilling tool rotatable about a rotational axis (A) in a rotational direction (&#x3c9;), includes at least one main bit and at least one auxiliary bit (), circumferentially offset relative to the at least one main bit () and having an auxiliary cutting edge () formed, at least piecewise, as a circular arc section () spaced from the rotational axis (A) radially inwardly and inclined in a radial direction, and a straight outer section () extending radially outwardly with respect to the circular arc section () and inclined in the radial direction.

Hard material drilling head

A hard material head () for a rotary percussion drill bit () having an elongated shaft () including at least three cutting edges () distributed circumferentially within a circumscribing circle, a bottom surface () located opposite the cutting edges () and fastened by a material bond to an end () of the drill bit shaft () of the rotary percussion drill bit (), concave side surfaces () formed circumferentially between adjacent cutting edges (), and a peripheral pocket () opening toward the bottom surface () and formed, respectively, in at least two concave side surfaces () located opposite one another, and in which a corresponding axial pin () formed on a shaft end () is form-locking engageable.

Hard material head and rotary percussion drill bit

A hard material bit for a rotary-percussion tool () includes at least one cutting edge (), a bottom surface () located opposite the at least one cutting edge (), and at least one attachment surface () and at least one free surface () both extending transverse to the bottom surface () and forming, respectively, a piecewise extending first chamfer () and second chamfer (), with the second chamfer () having a width greater than a width of the first chamfer ().

Hard material bit

A drill bit for a hammer drill for drilling in stone, concrete and the like includes a drill bit head formed as a hard material body with radial legs and having at least three radially extending cutting bits formed on the radial legs, and a centering tip in a center of the hard material body and projecting beyond one of the cutting bits, with the centering tip having concave limiting surfaces stretching between the linearly extending auxiliary cutting edges.

Growing community of inventors

Kaufering, Germany

Olaf Koch