Abstract: The present invention relates to an electric circuit. The electric circuit comprises at least six light-emitting elements and at least three switching networks for individually controlling the light-emitting elements. Each switching network is connected with at least four light-emitting elements. The at least three switching networks are connected with each other by parallel connections of respective two of the at least six light-emitting elements. The respective two light-emitting elements have opposite current blocking directions.

Abstract: The present invention relates to an optoelectronic device for determining relative movements or relative positions of two objects, comprising a first object fixed relative to a frame of the device; a second object mounted in spaced relation to the first object and adapted for movement relative thereto; and at least one measuring cell for determining movement or displacement of the second object relative to the first object. The present invention provides a resilient member arranged between the first object and the second object for dampening relative movements, wherein the resilient member substantially surrounds the at least one measuring cell.

Abstract: Device for pneumatically milking a cow, comprising a number of milk extractors, each comprising a teat cup as well as milk line connected to the lower end of the teat cup, which line leads from the teat cup to a collection chamber for the milk from the teat cup, each milk extractor being provided with a supply for a cleansing medium, such as a disinfectant, to the teat cup, in particular to a teat present in the teat cup, the supply comprising a line having an end portion with discharge end, and each milk extractor being provided with means for closing off the passage of the milk extraction at or downstream of the discharge end of the line for cleansing medium, preferably at that level, when discharging the cleansing medium, the closing means comprising a reciprocating closing body that can be moved between a position leaving the passage of the milk extractor free and a position closing it off, the closing body being provided with a squirt line forming the end portion with discharge end of the line for supply

Abstract: An arrangement for the detection of relative movements of two objects with four measuring cells as vertical measuring device for the detection of a relative movement perpendicular to an imaginary plane, with the measuring cells being arranged in such a manner that their vertical projections onto the plane are arranged at an identical angular distance from each other about a centre. Further, a force and/or moment sensor with a first board and a second board which are elastically connected with each other and movable relative to one another.

Abstract: To trigger technical control operations and/or to trigger the execution of technical functions, a manually operated input device with a torque-force sensor is used. Pressure is exerted onto a user interface of this input device and results in the generation of a pulse, which is measured with the aid of the force-torque sensor and converted into a pair of vectors formed by a force vector and a moment vector. This vector pair is then checked to determine whether certain predefined characteristic pulse conditions have been met. If these predefined pulse conditions are identified as having been met, at least one technical control operation that is to be performed by means of the input device and linked to a certain object, and/or at least one technical function to be executed by means of the input device, is triggered by switching to an activation state.

Abstract: An arrangement for the detection of relative movements of two objects with four measuring cells as vertical measuring means for the detection of a relative movement perpendicular to an imaginary plane, with the measuring cells being arranged in such a manner that their vertical projections onto the plane are arranged at an identical angular distance from each other about a centre. Further, a force and/or moment sensor with a first board and a second board which are elastically connected with each other and movable relative to one another.

Abstract: A gear unit in which a cable, band or similar device is fitted between the drive and the output in order to transform a fast rotational movement at the drive end, which is limited in both directions, into a slow rotational movement at the output end. The cable is fastened at both ends to an oscillating intermediary single-piece divided into two segments, and rests against the outer walls of the intermediary piece and is wound around the shaft of the drive so as to transfer a driving torque. A position sensor is assigned to the inner segment of the intermediary piece, and/or a torque sensor is mounted between both segments of the intermediary piece. A fast rotational movement of the drive is transformed into a slow rotational movement without play, and provides a good synchronization characteristic.

Abstract: For sensing the relative movements of an object a force sensing unit (15) comprises a stationary supporting means (6) and a cap (150) located movable relative to said supporting means as well as a force/moment sensor (1) for sensing the three possible translational and three possible rotational movements of the cap relative to said supporting means.

Abstract: An apparatus for converting a rotary motion into an axial motion, is used as overload protection; the force transmitting elements of the conversion apparatus, in the form of a threaded spindle, a nut and/or the intervening planetary rollers and roller bodies, are made with different contours of deformable, preferably elastically deformable material.

Abstract: To create an additional steering angle for a vehicle, an actuator having a microprocessor-controlled electric motor functioning as the drive and a gear driven by said electric motor, is used to apply to the wheels the additional steering angle at the vehicle axle. The gear is a known constant-pitch planetary rolling-contact threaded-spindle gear (constant-pitch PRCTS gear) (12), consisting of a spindle rod (16), a spindle nut (14) surrounding the former, and a number of interposed rollers or rolling elements (18) with a groove profile (19) matching the thread (17) of the spindle rod (16). The rollers or rolling elements (18) are run on a number of guide rings (20) and interposed bearings (20), and placed at a fixed predetermined distance relative to the spindle nut (14) and to one another. The spindle rod (16) concurrently functions as the axis of the electric motor and is placed inside an electric motor rotor (9′).

Abstract: An electromechanical brake, in particular for vehicles, has an electric actuator which generates an actuation force and acts on at least one frictional element so as to press the latter, in order to bring about a frictional force, against a rotatable component of the brake which is to be braked. In order to keep the actuation force to be applied by the actuator low, there is, between the component to be braked and the electric actuator, an arrangement which brings about the self-energization of the actuation force generated by the electric actuator. In the event of a deviation between the setpoint value and the actual value, a device for comparing a setpoint value of the frictional force with the actual value of the frictional force controls the electric actuator, in order to correspondingly increase or decrease the generated actuation force, with the result that the actual value is approximated to the setpoint value of the frictional force.

Abstract: A gear unit in which a cable, band or similar device is fitted between the drive and the output in order to transform a fast rotational movement at the drive end, which is limited in both directions, into a slow rotational movement at the output end. The cable is fastened at both ends to an oscillating intermediary single-piece divided into two segments, and rests against the outer walls of the intermediary piece and is wound around the shaft of the drive so as to transfer a driving torque. A position sensor is assigned to the inner segment of the intermediary piece, and/or a torque sensor is mounted between both segments of the intermediary piece. A fast rotational movement of the drive is transformed into a slow rotational movement without play, and provides a good synchronization characteristic.

Abstract: The invention relates to a gear unit in which a cable, band or similar (2) is fitted between the drive and the output in order to transform a fast rotational movement at the drive end, which is limited in both directions, into a slow rotational movement at the output end. The cable (2) is fastened at both ends (21, 22) to an oscillating intermediary single-piece (3) divided into two segments (31, 32). The cable rests against the outer walls of the intermediary (2) and is wound around the shaft (41) of the drive (4) so as to transfer a driving torque. A position sensor is assigned to the inner segment (31) of the intermediary piece (3), and a torque sensor (6) is mounted between both segments (31, 21) of the intermediary piece (3). In the inventive gear unit, a fast rotational movement of the drive is transformed into a slow rotational movement. This takes place without play and provides a good synchronization characteristic.

Abstract: To form the drive for an electrically-actuatable vehicle brake whose frictional elements can be pressed against a brake disk (38) with the aid of an electric motor (4), the electric motor (4) is connected, by way of a spindle gear that acts, with axial guidance and protection against relative rotation, in the direction of displacement of the frictional elements, to a brake piston (24), which is seated to be axially displaceable and acts on the frictional elements. A pitch-true, planetary-roller threaded (SPWG) spindle (12) known per se is used as the spindle gear, the spindle comprising a spindle shaft (16), a spindle nut (14) encompassing this shaft, and a plurality of barrel or roller bodies (28) disposed between the two, the bodies being provided with grooved profiles (29) that fit the spindle shaft (16). The barrel or roller bodies (28) are seated by a plurality of guide rings (30) or a guide body (30') and bearings (18, 20) disposed between them.

Abstract: To convert a rotational movement into an axial movement, rolling or roller bodies (2') are seated by way of a plurality of guide rings (5) and bearings (6) disposed between the guide rings (5) and a spindle nut (3'). The rolling or roller bodies (2') are fixedly spaced relative to the spindle nut (3') and one another, so an axial reception of a force or torque by the spindle nut (3) is transmitted through the rolling and roller bodies (2'), the guide rings (5) and the bearings (6), and, via the rolling or roller bodies (2'), the guide rings (5) and the bearings (6), a rotational movement of the spindle rod (1) is converted into an axial movement of the spindle nut (3'), or vice versa, that is free from pitch errors.

Abstract: A device (1) for converting rotary movement into axial movement has a spindle (8), a spindle nut (5) surrounding the spindle (8), and a plurality of interposed rollers (7). Each of the rollers has a groove profile (72) corresponding to a thread (81) on the spindle (8), and roller grooves (71) corresponding to spindle grooves (51) formed on the interior of the spindle nut (5). The converter device is driven by a drive unit such as an electric motor (4), either via the elements spindle nut (5) and spindle (8) or, with an interposed connection element, via the rolling elements or rollers (7). The converter device has a reset device with a mechanical energy accumulator (21) and an energy delimiter (22). Energy transfer takes place from the electric motor (4) via the energy delimiter (22) to the energy accumulator (21) connected to a casing (3) or vice versa.

Abstract: An apparatus for converting rotary motion into axial motion includes a spindle with an external contour and a nut with an internal profile and interposed contoured rollers which have two different contours, one of which produces an axial connection with the contour of the spindle, and the other of which produces a corresponding axial connection with the contour of the interior of the nut. It is preferred that the contour on the interior of the nut be in the form of relatively coarse grooves of V-shaped cross section, with fine simplex thread on the exterior of the spindle. Coarse grooves corresponding to and fitting the coarse grooves on the interior of the nut, alternating with a number of fine grooves corresponding to the fine simplex thread on the spindle, are provided on the outside of the rollers that are disposed between the spindle and the nut.

Abstract: An optoelectronic array or system permitting the simultaneous input of six isplacement components is housed in a plastic sphere wherein a fixed slit diaphragm is connected in series to each of six light-emitting devices, which are arrayed in a plane at equal angular displacements from each other. The light-emitting devices are arrayed opposite corresponding linear one-dimensional position-sensitive sensors, whose axes are aligned vertically to the direction of the slits of the corresponding slit diaphragms, so that the light-emitting devices with their corresponding slit diaphragms are adapted to move relative to the position-sensitive sensors. The individual light-emitting device allocated to each sensor is driven by an electronic controller which maintains the sum of both currents flowing in the corresponding position-sensitive sensor constant and equal for all six sub-systems and additionally regulates the radiant intensity of the light-emitting devices.

Abstract: A force-torque sensor is provided for measuring all six possible force and orque components in the Cartesian coordinate system by means of wire strain gauges. The sensor has two identically designed integral spoke wheels each consisting of a rigid cylindrical outer ring and a central hub interconnected by four spokes. Proximate to the hubs of the two spoke wheels, such hubs being rigidly and solidly connected with each other, wire strain gauges are mounted in pairs on opposed spoke surfaces perpendicular to the central axis, as well as on the opposed surfaces of one diagonal pair of spokes of one of the two spoke wheels, the latter surfaces extending perpendicular to the former.