Abstract: A cooling device for a hand-held power tool, in particular an angle grinder, includes a first air guide channel configured to guide a first airflow and a first air inlet opening configured to guide the first airflow into a housing of the hand-held power tool. The first airflow is guided such that the first airflow extends/flows from the first air inlet opening to a side of the housing that faces away from the first air inlet opening.

Abstract: A hand-held power tool, in particular an angle grinder, includes a drive unit, a machine housing, in particular having a first housing part, which is designed as a transmission housing, and a second housing part, which surrounds the drive unit, and a bearing unit, in particular a bearing housing, for supporting the drive unit. The bearing unit protrudes into the first housing part.

Abstract: A cooling device for a hand-held power tool, in particular an angle grinder, includes a first air guide channel configured to guide a first airflow and a first air inlet opening configured to guide the first airflow into a housing of the hand-held power tool. The first airflow is guided such that the first airflow extends/flows from the first air inlet opening to a side of the housing that faces away from the first air inlet opening.

Abstract: The invention relates to a leg wear (01, 31) in the form of trousers (01) or of a skirt (31), comprising a lower cloth portion (06, 36) which faces the body, and a top cloth portion (05, 35) which overlaps the lower cloth portion (06, 36), wherein the cloth portions (05, 06 or 35, 36) can be removably connected to each other by means of closing means (25, 26), and comprising a lower waistband portion (04, 34) which faces the body and which adjoins the lower cloth portion (06, 36) at the top, and a top waistband portion (03, 33) which overlaps the lower waistband portion (04, 34) and which adjoins the top cloth portion (05, 35), the waistband portions (03, 04 or 33, 34) coming to rest at the same height (02) when the leg wear (01, 31) is used in a common manner, a lower guiding part (12) being arranged on the lower waistband portion (04, 34) and a top guiding part (13) of a sliding guide (11) being arranged on the top waistband portion (03, 33), said guiding parts (12, 13) being slidable relative to each other

Abstract: The invention relates to a mobile floor-cleaning machine having a rotationally drivable, disk-like cleaning tool which is detachably held on a tool holder, the tool holder being connected to a drive shaft in a rotationally fixed manner. In order to develop the floor-cleaning machine in such a way that the cleaning tool can be easily replaced, the invention proposes that said cleaning tool is adapted to be detachably latched to the tool holder and to be disconnected from the tool holder in the axial direction by means of an unlatching mechanism which is adapted to be operated by the user.

Abstract: The invention relates to a mobile floor-cleaning machine having a rotationally drivable, disk-like cleaning tool which is detachably held on a tool holder, the tool holder being connected to a drive shaft in a rotationally fixed manner. In order to develop the floor-cleaning machine in such a way that the cleaning tool can be easily replaced, the invention proposes that said cleaning tool is adapted to be detachably latched to the tool holder and to be disconnected from the tool holder in the axial direction by means of an unlatching mechanism which is adapted to be operated by the user.

Abstract: A method is disclosed for stress relieving workpieces, having the steps of causing the workpiece to vibrate due to selected revolution values of a vibrator and making the selection of the revolution values on the basis of a measurement revealing the vibration behavior of the work piece. The workpiece is excited with revolutions of predetermined frequencies in a limited operating range and the respective response behavior associated with the excitation vibrations is measured and evaluated. In so doing, an efficiency value is determined for each excitation frequency and, with the aid of a correlation between the calculated efficiency values and conventionally selected excitation frequencies, further frequencies are selected for stress relieving the workpiece.

Abstract: A rotary kiln with primary air feed at the end wall of the rotary kiln is distinguished by the feature that at least two primary air nozzles are oriented relative to each other and to the fuel bed so that two oppositely directed vortices are generated within the rotary kiln, the axes of rotation of said vortices extending substantially parallel to the axis of the rotary kiln and said vortices rotating about said axes of rotation so as to promote the thermal convection-induced motion of the combustion gases.

Abstract: Method for operating a machine for the relaxation of workpieces, in which the workpiece is subjected to vibrations of selected speeds of a vibrator and in which the selection of the speeds of the vibrator is taken from a measurement which reproduces the vibratory behavior of the workpiece upon excitation by the vibrator within its operating range and in which, for the individual speeds of the vibrator within its operating range, there are determined within a defined harmonics region those harmonics corresponding to those vibrations in the operating range in which resonances or similar stable states of vibration occur and in which connection, for the relaxation of the workpiece, there are selected those speeds which are causal for an accumulating of harmonics in the defined harmonics region.