Abstract: An electric hand tool is disclosed which has a gt (15), received in a housing (10), with a gear shaft (20) and also has at least one radial bearing (30) for rotary support of the gear shaft (20), the inner bearing ring (301) of the radial bearing being fixed on the gear shaft (20) and the outer bearing ring (302) of the radial bearing being fixed in a bearing box (31) disposed in the housing (10), in each case being fixed axially nondisplaceably. For simple assembly of the gt (15) without tools, the outer bearing ring (302) of the radial bearing (30) rests with a sliding seat in the bearing box (31) and is fixed by means of a clamping bracket (32) fixed to the bearing box (31).

Abstract: An electric hand power tool formed as a hammer drill or an impact hammer drill has a housing, a drive transmission received in the housing and having an intermediate transmission for turning a tool, an impact mechanism with a swinging drive for delivering axially oriented impacts to the tool, and a drive shaft, a transmission toothed wheel fixed on the transmission shaft for turning the latter, a drive bearing provided on the swinging drive and loosely arranged on the transmission shaft, a manually releasable coupling provided for switching off the impact mechanism and connecting the drive bearing with the transmission shaft for a rotation transmission, a crank-shaped flat switching plate provided for releasing the coupling and turnably supported on a receiving dome arranged above the transmission shaft, a drive pin operative for turning the switching plate under the receiving dome and engaging the switching plate, and a handle.

Abstract: An electric hand tool is disclosed which has a gt (15), received in a housing (10), with a gear shaft (20) and also has at least one radial bearing (30) for rotary support of the gear shaft (20), the inner bearing ring (301) of the radial bearing being fixed on the gear shaft (20) and the outer bearing ring (302) of the radial bearing being fixed in a bearing box (31) disposed in the housing (10), in each case being fixed axially nondisplaceably. For simple assembly of the gt (15) without tools, the outer bearing ring (302) of the radial bearing (30) rests with a sliding seat in the bearing box (31) and is fixed by means of a clamping bracket (32) fixed to the bearing box (31).

Abstract: An electric hand power tool formed as a hammer drill or an impact hammer drill has a housing, a drive transmission received in the housing and having an intermediate transmission for turning a tool, an impact mechanism with a swinging drive for delivering axially oriented impacts to the tool, and a drive shaft, a transmission toothed wheel fixed on the transmission shaft for turning the latter, a drive bearing provided on the swinging drive and loosely arranged on the transmission shaft, a manually releasable coupling provided for switching off the impact mechanism and connecting the drive bearing with the transmission shaft for a rotation transmission, a crank-shaped flat switching plate provided for releasing the coupling and turnably supported on a receiving dome arranged above the transmission shaft, a drive pin operative for turning the switching plate under the receiving dome and engaging the switching plate, and a handle which is available outside of the housing and displacing the drive pin in a longit

Abstract: The present invention is directed to a machine tool, in particular to a hand-operated hammer drill, having a compartment (10) containing lubricant in which at least one rotationally drivable component (12) is mounted and having a device (14) for compensating the pressure in the compartment (10), the device having a rotationally drivable centrifugal component (16) which shields at least one pressure-compensation channel (18) disposed downstream from it, in terns of fluid mechanics, in the venting direction of the compartment (10). It is proposed that the centrifugal component (16) be mounted in a torsionally fixed manner on the rotationally drivable component (12).

Abstract: A machine tool, in particular to a hand-operated hammer drill, having a compartment containing lubricant and a device for compensation of the pressure in the compartment in the area of a bearing of a component able to be driven so as to allow rotation. It is proposed that the bearing form at least a part of a lubricant seal of the pressure-compensation device via which a pressure in the compartment as able to be compensated.

Abstract: The present invention is directed to a machine tool, in particular to a hand-operated hammer drill, having a compartment (10) containing lubricant in which at least one rotationally drivable component (12) is mounted and having a device (14) for compensating the pressure in the compartment (10), the device having a rotationally drivable centrifugal component (16) which shields at least one pressure-compensation channel (18) disposed downstream from it, in terns of fluid mechanics in the venting direction of the compartment (10).

Abstract: The invention is directed to a machine tool, in particular to a hand-operated hammer drill, having a compartment (10) containing lubricant and a device (12, 14, 34) for compensation of the pressure in the compartment (10) in the area of a bearing (16, 18, 36) of a component (20, 22, 54) able to be driven so as to allow rotation.

Abstract: An apparatus for manufacturing an otoplastic. An otoplastic is manufactured directly in the ear of a hearing-impaired person in that a deformable envelope is pulled over a die or over a shell or over an overlayed over-shell. This apparatus is then supplied with flowing otoplastic material between the die and the envelope, being supplied therewith in the ear. The envelope expands and assumes the shape of the auditory canal. After hardening or curing of the otoplastic material in the ear of the hearing-impaired person, the envelope and the die are removed and a module of either an in-the-ear or of a behind-the-ear hearing aid is integrated therewith.

Abstract: An in-the-ear hearing aid has a number of electrical and electro-mechanical discrete components embedded in a flexible plastic compound. The combination of the components in the plastic compound can be introduced into the user's ear, or into a negative of an ear impression, for pre-fitting. Due to the flexibility of the plastic compound, the combination can be shaped as needed. The shaped combination is then cast in an otoplastic material which conforms precisely to the shape of the user's ear, and hardens to retain that shape. A rigid shell for holding the components is thus not needed, and therefore the hearing aid is far more adaptable to different shapes of auditory canals than conventional hearing aids.

Abstract: A method and apparatus for manufacturing an otoplastic. An otoplastic is manufactured directly in the ear of a hearing-impaired person in that a deformable envelope is pulled over a die or over a shell or over an overlayed over-shell. This apparatus is then supplied with flowing otoplastic material between the die and the envelope, being supplied therewith in the ear. The envelope expands and assumes the shape of the auditory canal. After hardening or curing of the otoplastic material in the ear of the hearing-impaired person, the envelope and the die are removed and a module of either an in-the-ear or of a behind-the-ear hearing aid is integrated therewith.