Robert Boschgmbh

Rainer Vollmer

Cornelius Boeck

Joachim Schadow

Tobias Overbeck

Manfred Lutz

Daniel Barth

Sinisa Andrasic

Peter Stierle

Marcus Schuller

Andreas Wolf

A portable power tool, in particular an angle grinder, includes a housing that accommodates a drive and an electronic device with an interface configured to electrically connect the electronic device. The power tool further includes a housing inner part that is configured as a drive housing and supports the electronic device. The interface has at least one first electrical interface contact region and at least one second interface contact region spaced apart from the first interface contact region. At least one insulating element spaced apart from the interface contact regions is arranged between the housing inner part and the electronic device. The insulating element is configured to avoid an electrical short-circuiting connection between the first interface contact region and the second interface contact region.

Portable power tool

A safety guard device includes at least one base body and at least one safety-guard anti-rotation lock that has at least one braking element. The at least one braking element is configured to at least secure the base body against rotation relative to a hand-held power tool by a frictional connection in at least one operating mode of the hand-held power tool. The safety-guard anti-rotation lock comprises at least one self-amplification unit that is configured to increase the braking force between at least one part of the hand-held power tool and the at least one braking element in the braking state.

Safety guard device

A guard device includes a fastening element defining a central opening and configured to be fastened onto a collar of a power tool, a guard portion extending from the fastening element and configured to surround at least a portion of a tool holder extending from the collar, a braking element pivotably supported on the fastening element and including a frictional engagement surface that is configured to be pivoted against the collar so as to apply a frictional braking force against the collar when the power tool is in an operating state, and an actuating element moveably supported on the fastening element and configured to pivot the braking element such that the frictional engagement surface is positioned in contact with the collar. The frictional engagement surface is configured to increase the braking force applied to the collar in response to a braking state of the power tool.

Guard device

A protective hood device includes at least one basic body, at least one fastening unit, and at least one protective-hood-device anti-rotation unit. The at least one fastening device is configured, at least partially, to fasten the basic body relative to a hand power tool, in particular by force closure. The at least one protective-hood-device anti-rotation unit has at least one stop element, which is configured, at least partially, in at least one operating state of a hand power tool, to lock the basic body against rotation relative to the hand power tool, in particular by form closure. The at least one stop element is at least partially integral with the fastening unit.

Protective hood device

A machine tool, in particular a powered hand tool, has an electric drive motor to which pole shoes are assigned in order to conduct a magnetic field. Furthermore, a fan wheel is provided in order to produce a stream of cooling air. In the housing, an air-guiding element forms a portion of the flow path for the stream of cooling air. According to the invention, the air-guiding element at least partially covers the pole shoes.

Growing community of inventors

Neuhausen, Germany

Rainer Vollmer