Abstract: An apparatus for determining the position of the rotor of an electric machine in relation to the stator. The machine has multiple phases, each of which includes at least one pole winding with a magnetizable core. The apparatus includes devices for detecting measurement signals that are characterized by the momentary degrees of magnetization of the pole winding cores. The degrees of magnetization are influenced by the angular position of the magnetic field of the rotor. The devices are also used to detect the currents in the phases and determine the angular position of the rotor from the detected measurement signals, taking into account a contribution of the phase currents to the degrees of magnetization of the pole winding cores.

Abstract: A drive with a motor and devices for coupling the motor to a driving object. The coupling devices include a centrifugal mass which is movable by the motor, and an impact stop, which is connected to the driving object, for the centrifugal mass.

Abstract: A device for determining a position of a movable, magnetizable and/or conductive body relative to a stator that has at least one pole winding. Apparatuses are provided for detecting a measurement signal that depends on the inductance of the pole winding, wherein the inductance is influenced by the position of the body.

Abstract: A torque sensor comprises a freewheel with a first rotating element for transferring a torque to be determined to a second rotating element which is coaxial to the first rotating element, the transfer occurring in one rotational direction, and devices for determining a rotation of the first rotating element relative to the second rotating element in said rotational direction and for determining the torque using the determined relative rotation.

Abstract: The invention relates to a device and a method for determining the rotational position of the rotor of an electric machine that has star-connected pole winding phases. The device is equipped with a unit for applying voltage pulses (14-16) to at least one of the phases (1-3) and a unit that evaluates the neutral point potentials generated by the voltage pulses (14-16). The invention is characterized by the provision of the aforementioned unit for applying time-delayed voltage pulses (14-16) to different phases (1-3) and the unit for producing at least one differential between the neutral point potentials generated by said voltage pulses.

Abstract: Disclosed is an electric drive, particularly for a pivoting arm, such as a robotic arm, comprising a rotor, a plurality of magnetic periods and a device for determining the rotational position of the rotor based on at least one measurement signal, which is indicative of the inductance of a pole winding strand that is dependent on the position of the pole winding strand relative to the magnetic periods. The electric drive according to the invention that solves this problem in that two coupled rotor parts, which can be jointly rotated at a rotational angle ratio in relation to each other that is fixed, and assemblies comprising magnetic periods and pole winding strands are provided, the assemblies being separate for the rotor parts, wherein the numbers of the magnetic periods for each rotor part are co-prime, and the device for determining the rotational position of the rotor is provided for determining the position from the measurement signals for the two rotor parts.

Abstract: The invention relates to a carrier frame for a manually movable caddie, in particular to a golf caddie comprising wheels (2) mounted on the laterally protruding parts (7, 8) of the fame. According to the invention, for folding the golf caddie, the laterally protruding parts (7, 8) of the frame are embodied pivotable and/or displaceable in such a way that they bring the wheels (2) closer to each other towards a mid-plane (18) or move them away therefrom. In a preferred embodiment, the protruding parts (7, 8) of the frame and the wheels (2) are embodied pivotable or displaceable in such a way that the axes of the brought together wheels (2) coincide and the wheels (2) are disposed oppositely to each other by the external faces thereof.

Abstract: The invention relates to a device and a method for determining the rotational position of the rotor of an electric machine that has star-connected pole winding phases. The device is equipped with a unit for applying voltage pulses (14-16) to at least one of the phases (1-3) and a unit that evaluates the neutral point potentials generated by the voltage pulses (14-16). The invention is characterised by the provision of the aforementioned unit for applying time-delayed voltage pulses (14-16) to different phases (1-3) and the unit for producing at least one differential between the neutral point potentials generated by said voltage pulses.

Abstract: The invention relates to a carrier frame for a manually movable caddie, in particular to a golf caddie comprising wheels (2) mounted on the laterally protruding parts (7, 8) of the fame. According to the invention, for folding the golf caddie, the laterally protruding parts (7, 8) of the frame are embodied pivotable and/or displaceable in such a way that they bring the wheels (2) closer to each other towards a mid-plane (18) or move them away therefrom. In a preferred embodiment, the protruding parts (7, 8) of the frame and the wheels (2) are embodied pivotable or displaceable in such a way that the axes of the brought together wheels (2) coincide and the wheels (2) are disposed oppositely to each other by the external faces thereof.

Abstract: A control for a motor drive of a device that is movable, in particular, drivable, by a muscle power drive as well as, in a supporting function, the motor drive, including an apparatus, detecting kinematic parameters of the moving device and generating motor drive control signals, for adjusting a degree of support action for the muscle power drive by means of the motor drive based exclusively on the detected kinematic parameters, wherein the kinematic parameters relate to a movement component which is based on at least one of the periodic fluctuation of the exerted muscle driving power inherent in the muscle power drive and a change of the exerted muscle driving power in reaction to a certain change of the motor driving power or the motor driving speed.

Abstract: A transportation system has a mobile transportation device and a vehicle larger than the mobile transportation device, wherein the mobile transportation device can be carried in the vehicle and operated like a cart driven by muscle force by pulling or pushing. The vehicle carries the mobile transportation device. The mobile transportation device has an electrical drive that is activated by the operation of the mobile transportation device, wherein the electrical drive is activated by manipulation of the mobile transportation device. The mobile transportation device, when carried in the vehicle, is in functional connection with the vehicle. At least one of a device for charging the battery of the electrical drive and a signaling device is provided. The device for charging the battery is in communication with an electrical system of the vehicle, and the signaling device indicates the presence or absence of the mobile transportation device in the vehicle.

Abstract: A separately excited electric machine has a rotor and a stator and a device for detecting the rotational position of the rotor relative to the stator. A position determination device is provided for determination of the rotational position by evaluation of a signal which can be tapped at the pole winding circuit and is imprinted by pole winding inductivities exhibiting rotational position dependency. The pole winding circuit has phase strands that are star-connected, and the position determination device is provided for evaluating the potential at the star point during motor operation of the machine.

Abstract: An electric machine includes a separately exited rotor arrangement for the generation of magnetic fields which follow one another in the movement direction of the rotor, each magnetic field corresponding to a whole magnetic period, and stator poles arranged so as to follow one another along the rotor arrangement, wherein a number of stator poles which is not a whole number is allotted to a magnetic period. A varying offset between the magnetic field periods and the stator poles caused by the difference is at least partly compensated for by a correspondingly time-delay supply of the stator pole windings.

Abstract: An auxiliary drive for a travelling device has a boosting effect when the driving power requirements are high and has a regenerative effect when the driving power requirements are low or negative. The auxiliary drive is provided with a measurement device for the primary driving power and with a control that increases or diminishes the generated torque by reducing or increasing the regenerative braking torque when a predetermined primary driving force is exceeded or not reached, respectively. The use of regenerative braking to charge the batteries allows small and relatively light batteries to be used.

Abstract: A connecting cord has a plug at each end. Either such plug may be plugged into the receptacle of a hearing aid and the other plug may be plugged into an external microphone. The contacts of each plug are connected in a different circuit configuration to the conductors of the cord so that when one plug is plugged into the receptacle, the internal hearing aid microphone is shorted out, and when the other plug is plugged into the receptacle, both microphones operate in parallel. The plug contacts are formed of printed circuit board and each plug has a rocker with a hooked top which engages a slot in the receptacle to prevent the inadvertent movement of the plug out of the receptacle. Other plug internal circuit configurations allow connection of other signalling systems to the hearing aid.