Abstract: The invention relates to a belt pulley for the output shaft of a gear being driven by an electric motor, with a support for a drive belt at the outer periphery and a receptacle for an axle in the centre, where the receptacle for the axle involves a first region, the profile of which is in such a way noncircular, that between an axle being insertable therein and the belt pulley no slip is possible, and wherein the receptacle for the axle involves a second region including at least one recess apt to allow an elastic part of the axle to snap in a form-fit way when inserted into the belt pulley through the first region. The invention further relates to a gear, to an electric motor, and to an output shaft.

Abstract: The invention relates to a drive unit for a Venetian blind or the like for inserting into a head rail, including an electric motor and output shafts at both ends driven via gear, where the electric motor is combined with components serving for acoustically damping and uncoupling, that are shaped such that they are insertable into the head rail together with the electric motor as well as to a Venetian blind or the like as such.

Abstract: The invention relates to an electric motor with a housing, a rotor, a stator, an axle, and a bearing region with two bearings, where both bearings are arranged at the same side of the rotor in axial direction, wherein the housing is built in two parts, such that one part contains rotor and stator and the bearing region and a second part is designed as a cover at the side far from the bearing region.

Abstract: The invention relates to a belt pulley for the output shaft of a gear being driven by an electric motor, with a support for a drive belt at the outer periphery and a receptacle for an axle in the centre, where the receptacle for the axle involves a first region, the profile of which is in such a way noncircular, that between an axle being insertable therein and the belt pulley no slip is possible, and wherein the receptacle for the axle involves a second region including at least one recess apt to allow an elastic part of the axle to snap in a form-fit way when inserted into the belt pulley through the first region. The invention further relates to a gear, to an electric motor, and to an output shaft.

Abstract: The invention relates to a worm wheel that is combined with an output shaft to one piece made of plastic material, to a gear with such worm wheel, and to an electric motor with such gear.

Abstract: An additional housing is flanged onto the motor housing of a small electric motor, in particular a motor for the automation of a door, which motor has a flanged-on gear-unit housing, wherein the additional housing is flanged onto the motor housing in the longitudinal direction of the motor and has at least two through-bores which extend parallel to one another and perpendicularly to the longitudinal direction of the motor, and wherein the ends of the through-bores have flat bearing surfaces which lie perpendicularly to the through-bores.

Abstract: The invention relates to an electric-motor drive with a gear unit, the transmission ratio of which is in the range between 80:1 and 220:1, and to an automatic door operating device, in particular for swinging doors, with such a drive. A particularly quiet and compact drive, which, when used in an automatic door operating device, is suitable both for right-hand-hung and left-hand-hung doors, is characterised in that the gear unit has two stages, the first stage being designed as a worm gear stage and the second stage being designed as a spur gear stage.

Abstract: An electrically commutated, collectorless direct-current motor is disclosed whose stator has a self-supporting drum winding and a cylindrical plastic body which is located concentrically with the drum winding in a winding head. The cylindrical plastic body has recesses which contain eyehooks. The ends of the drum winding are connected with the eyehooks, which are welded to a circuit board. The invention makes it possible to automate the connection of the winding ends to the circuit board.

Abstract: An electronically commutated, collectorless direct-current motor is disclosed whose stator has a drum winding and an external magnetic yoke surrounding same, and whose rotor consists of a shaft, a multipolar, permanent-magnet body, and an internal magnetic yoke. To reduce the moment of inertia, the internal magnetic yoke has kidney-shaped apertures. The direct-current motor exhibits a good dynamic behavior and is used in data processing equipment.

Abstract: This invention relates to a circuit arrangement and the associated mechanism for slaving the angles of rotation of the slats of a plurality of centrally controlled sun or window blinds. The driving motor of each blind is provided with current via a corresponding operational amplifier and related circuit. The motor operates the slats to achieve balance between an input control voltage and a voltage depending on the angular position of the slats. An automatic version in which the control voltage is generated by a photoelectric sensor and several circuit variations are shown.