Hilti Aktiengesellschaft

Matthias Keith

Olaf Koch

Thomas Bader

Oliver Ohlendorf

Uto Plank

Stefan Hammerstingl

Alexander Buchenau

Dieter Kraus

Theo Kiesel

Helene Kaps

Ali Shadavakhsh

A hand-held power tool transmission closure having a base body for closing a transmission housing opening of a transmission housing of a hand-held power tool, in particular a hammer drill or a combi-hammer, wherein the hand-held power tool transmission closure includes a tube protruding from the base body, which extends in the transmission housing when the base body closes the transmission housing opening. The hand-held power tool transmission closure includes an air channel which extends in a first air channel section through the base body and in a second air channel section through the tube so that an air mass can flow through the air channel into and out of the transmission housing.

Hand-held power tool transmission closure and hand-held power tool

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 depth stop device for a screw driving tool includes an adjusting ring (), a connection sleeve () for rotatably mounting the adjusting ring () on the nose member () of the screw driving tool housing (), a substantially sleeve-shaped depth stop () displaceable in an axial direction relative the connection sleeve () by rotation of the adjusting ring (), and at least partially elastic locking element () engageable in the axial direction with both the adjusting ring () and the connection sleeve (), the locking element being also adapted to secure the adjusting ring () on the connection sleeve () in a rotational direction (D).

Depth stop device

A depth stop device () for use with a hand-held screw driving tool () includes an axial element () for driving a screw bit () and a sleeve element () having a longitudinal bore () in which the axial element () is at least partially received and an exit opening () extending sidewise from the longitudinal bore (). The exit opening () is limited by a deflection surface () which is stretched over an intersection plane (SE) and has a geometrical center (M) that forms an origin of a spatial system of coordinates. The intersection plane (SE) forms with a tangential axis (T) of the spatial coordinate system that extends perpendicular to both the longitudinal (L) and radial (R) axis of the coordinate system, an acute angle (&#x3b1;).

Growing community of inventors

Kaufbeuren, Germany

Matthias Keith