SCHLEIFRING UND APPARATEBAU GMBH Patent applications |
Patent application number | Title | Published |
20140254602 | High Speed Network Contactless Rotary Joint - A contactless data link for connecting a first high speed network to a second high speed network that is rotatable relative to the first high speed network. The links includes a first data processor connected to the first network, and a second data processor connected to the second network. The link also includes a plurality of capacitive data links connected between the first data processor and the second data processor. Each capacitive data link comprises a transmitter amplifier, a capacitive coupler, and at least one receiver amplifier. For communication with the networks, each data processor comprises a physical layer network interface connected to one of the networks. An encoder may be provided for encoding the networks signals into signals, which may be transferred over the contactless data links, while a decoder may be provided for decoding the signals from the networks into signals for the network. | 09-11-2014 |
20140179125 | Slip Ring Brush Having a Galvanic Multi-Layer System - A slip ring arrangement comprises a brush with a first contact material on the surface, which rests on a slideway with a second contact material on the surface. The slideway further comprises a layer with a third contact material beneath the second contact material. In this case, the abrasion of the brush is lower than that of the second contact material in the case of a sliding contact between the brush and the second contact material. In the case of a sliding contact between the brush and third contact material, the abrasion of the brush is higher than that of third contact material. As a result, the second contact material of the slideway is degraded first, which corresponds to the normal service life of a slideway. Subsequently, the brush is worn off relative to the third contact material, by means of which a further considerable extension in the service life is achieved. | 06-26-2014 |
20140099800 | Oscillation Proof Brushblock for Sliprings - A slip ring assembly for the electrical connection of two rotating parts has at least a sliding track with V-grooves. At least two brushes of electrically conductive material are contacting the sliding track within the V-groove. The brushes are connected electrically with each other and mounted at different levels resulting in a different distance to the rotation axis of the sliding track. This results in an improved resistance against shock and vibrations. | 04-10-2014 |
20140016758 | Monitoring Device for a CT Scanner Gantry - A CT scanner gantry comprises a base with a tiltable frame holding a rotating part, the rotating part having a rotation axis and drive means for tilting the tiltable frame with respect to the base. Furthermore, a tilt drive control unit is provided to control the drive means. In inclination sensor is provided at the tiltable frame to indicate the inclination of the tiltable frame with respect to the center of gravity of earth to the tilt drive control unit. | 01-16-2014 |
20130195402 | PRECISION TWO-DIMENSIONAL FIBER-COLLIMATOR-ARRAY - A collimator system comprises a micro lens array and a fiber array. The fiber array has a substrate with a plurality of holes for holding a plurality of optical fibers. The fibers are glued into the holes. Before gluing, each of the fibers is positioned against the same side of a corresponding hole resulting in all fibers being located substantially equally with respect to the holes. The lens array is mounted with an offset to the fiber array resulting in alignment of the fibers and the lenses. | 08-01-2013 |
20110309943 | SELF-DIAGNOSING TRANSMISSION SYSTEM - A system transmits electric signals, electric energy or media over short distances between units movable relative to each other. The system has at least one first unit disposed along the trajectory of the movement and at least one second unit disposed for movement relative to the first unit. A diagnosis unit is associated with at least one of the units to detect the condition of at least one of said movable units and signals that detected condition to a central control unit. | 12-22-2011 |
20110261931 | Inductive Rotating Transmission Devices with Ripple Compensation for Computer Tomographs - A method for compensation of input voltage fluctuations in an inductive rotating coupler is disclosed. This coupler includes a power generator that feeds an alternating-current voltage into a resonance circuit including a resonance capacitor and an inductive rotating transmission device. The power generator is fed with an input direct-current voltage that may fluctuate, for example, owing to residual ripple. A control unit determines this input direct-current voltage and calculates there from an optimum operating frequency for the power generator, so that the output voltage at the load remains constant. | 10-27-2011 |
20110248727 | Method for Compensation of System Tolerances in Inductive Couplers - A method is disclosed for compensation of system tolerances in an inductive coupler which includes a power generator that feeds an alternating current into a series resonance circuit formed by a resonance capacitor and an inductive rotating transmission device. First, a brief sequence of at least one period of an alternating current is fed by the power generator into the series resonance circuit. Then the series resonance circuit is short-circuited. A first resonance frequency is measured. Then a longer sequence having a plurality of periods of an alternating-current voltage is generated by the power generator, so that a given small voltage is built up at the load. Now a second resonance frequency is measured whilst the resonance circuit is short-circuited. Then at least one correcting variable for the power generator is determined from the two resonance frequencies. | 10-13-2011 |
20100266294 | Multi-Channel Optical Rotary Transmission Device with High Return Loss - An optical rotating data transmission device comprises a first collimator arrangement for coupling-on first light-waveguides, and a second collimator arrangement for coupling-on second light-waveguides, which is supported to be rotatable relative to the first collimator arrangement about a rotation axis. A Dove prism is provided between the collimator arrangements as a derotating element. Furthermore, the collimator arrangements pre provided with adapter elements having rotationally symmetrical conical faces. Prism adapter elements are disposed on the end faces of the Dove prism and have prism adapter elements on the sides facing the collimator arrangements. These also have rotationally symmetrical conical faces with a surface configuration that is inverse to that of the adapter elements of the collimator arrangements. | 10-21-2010 |
20100141260 | RF Coils for Magnetic Resonance Tomography - A transmitting or receiving coil assembly for magnetic resonance tomographs comprising at least one flexible printed circuit board having inductors and at least one bar attached thereto for stiffening the flexible printed circuit board along one axis. The bar optionally has conductors for connecting electronic components on the printed circuit board with each other or with outside components of the magnetic resonance tomograph. | 06-10-2010 |
20090304330 | Optical Rotary Joint with High Return Loss - An optical rotary joint comprises a first collimator arrangement for coupling-on first light-waveguides and a second collimator arrangement for coupling-on second light-waveguides, with the second collimator arrangement being supported to be rotatable relative to the first collimator arrangement about a rotation axis. A Dove prism is provided between the collimator arrangements as a derotating element. An intermediate layer is provided on at least one boundary face of an optical constituent part to a surrounding medium, which the intermediate layer comprises a nano-structure having a mean refractive index lying between a refractive index of a material of the optical constituent part and a refractive index of the medium of the surroundings. | 12-10-2009 |
20090303580 | Lens System with Position Adjustment - In a lens system, such as for use in optical rotary joints, obliquely tilted cavities are inserted in a light path between light-waveguides and lenses to be coupled thereto in order to compensate lateral displacements between the light waveguides and the lenses. The cavities are filled with an optical medium having a predetermined refractive index in order to achieve a parallel displacement of a light-ray path, so that the ray path passes centrally through the lenses. | 12-10-2009 |
20090296441 | Semiconductor Power Switch - A semiconductor power switch comprises at least a first IGBT and a second IGBT. The collectors of the first and second IGBTs are connected to each other, and the emitters of the first and second IGBTs are connected to each other. The first IGBT is an IGBT type with a comparatively low collector-emitter on-voltage and a comparatively high turn-on or turn-off switching energy. In contrast thereto, the second IGBT is an IGBT type with a comparatively high collector-emitter on-voltage and a comparatively low turn-on or turn-off switching energy. Both IGBTs receive gate signals from a control circuit for switching the power switch on during a first time interval and switching the power switch off during a second time interval. The control circuit is designed to supply an on-signal to the second IGBT during the whole first time interval and another on-signal to the first IGBT during only a part of the first time interval, which is less than the whole. | 12-03-2009 |
20090279829 | Lens Arrangement for Optical Rotary Joints - According to one embodiment, an optical rotary joint comprises a first collimator arrangement for coupling-on first light-waveguides, and a second collimator arrangement for coupling-on second light-waveguides, with the latter being rotatably supported relative to the first collimator arrangement about a rotation axis. A Dove prism is provided between the first and second collimator arrangements as a derotating element. The first and second collimator arrangements have at least one micro-lens array on which light-waveguides with associated ferrules are disposed. In order to avoid tensile forces from arising in the arrangement, or as a result of individual ferrules becoming interconnected by an applied adhesive, trenches, barriers, or also coatings are provided between the individual ferrules. | 11-12-2009 |
20090276199 | Inductive Rotary Joint - An inductive rotary joint for non-contact transmission of electrical energy between a stationary part and a rotating part of the rotary joint comprises a power generator for generating an alternating voltage or an alternating current, which feeds a load by means of a rotatable power transmitter. An electrical parameter on the primary side of the power transmitter is determined with a measurement means, and from this, the condition of another electrical parameter at the load is approximated by means of a functional unit. Regulation of the power generator is effected with this approximated value. | 11-05-2009 |
20090220247 | Rotating Data Transmission Device with Active Compensation of Transmission Function - A rotating data transmission device for transmitting data from a data source to a data sink between a rotating part and a stationary part comprises a transmitting conductor arrangement which is fed from a transmitter means, and also a receiver means which taps signals from the transmitting conductor arrangement with the aid of a receiving coupler arrangement. The connection between data source and rotating data transmission device, or rotating data transmission device and data sink, is effected by means of light-waveguides. The receivers of the light-waveguides are linear receivers followed by equalizers for correcting the frequency and phase response. | 09-03-2009 |
20090162012 | Lens Arrangement for Optical Rotating Data Transmission Devices in Arbitrary Surrounding Media - A rotating data transmission device for optical signals comprises two collimator arrangements for coupling light-waveguides, the collimator arrangements being rotatable relative to each other, and a derotating element being interposed in a light path between the collimator arrangements. At least one collimator arrangement comprises a lens system with a micro-lens array, and a light-waveguide holder firmly mounted to the micro-lens array with an intermediate space between the holder and the micro-lens array. At least one light-waveguide for supplying or collecting light to or from a micro-lens is fastened to both the micro-lens array and to the holder to prevent bending loads with attendant shifts of a mode field from acting upon the light-waveguide between the holder and the micro-lens array. | 06-25-2009 |
20090129555 | Device and Method for Reconditioning Slip Rings in a Built-In State - A method and a device for reworking or re-machining the surface and, in particular, the slide tracks of a slip ring while the slip ring is in a built-in state in an appliance or machine using the slip ring. The slip ring is rotated by means of a drive provided in the appliance for rotating the slip ring during normal operation, or by means of an auxiliary drive, while a surface-removing cutting tool or surface deforming tool held in a tool holder or carrier adapted to be attached to the appliance or machine is applied to the surface of the moving slip ring to re-machine or recondition the surface. The invention avoids the necessity of dismantling the appliance or machine for the purpose of removing the slip ring for repairs. | 05-21-2009 |
20090082664 | Endorectal Coil for Magnetic Resonance Tomograph - An endoscopic RF coil arrangement for magnetic resonance imagers is provided which include a handle with a shaft and a coil with a balloon arranged distally. An inner cover is further provided which is pulled over the shaft and over the coil with balloon. An outer cover is provided over the inner cover. The outer cover comprises a formed part for a balloon on the distal side over the coil in which a liquid and/or a gas can be introduced. | 03-26-2009 |
20080317407 | Optical Rotating Data Transmission Device of Short Overall Length - An optical rotating data transmission device comprises a first collimator arrangement for coupling-on first optical waveguides, a second collimator arrangement for coupling-on second optical waveguides, which is supported to be rotatable relative to the first collimator arrangement about a rotation axis, and a derotating element such as a Dove prism in a light path between the collimator arrangements. At least one collimator arrangement comprises a deflecting element which deflects light entering the device from optical waveguides positioned at an angle to the direction of the rotation axis to travel along the direction of the rotation axis, or deflects light traveling along the direction of the rotation axis to exit the device at an angle to the rotation axis towards optical waveguides. | 12-25-2008 |
20080252336 | Non-Contacting Interrogation of System States - A device for non-contacting interrogation, without auxiliary power, of system states of a part that is rotatable relative to a fixed part comprises a coil on the rotatable part and a coil on the fixed part. The coils are mutually coupled, one being fed by a signal generator generating different frequencies, whilst the other coil is supplemented with at least one capacitance to form a resonance circuit. Further impedances can be added by means of switch elements to change a resonance frequency and form an interrogation circuit. By determining a resonance frequency on a signal generator side it is possible to draw conclusions about an impedance on an opposite side and to assign this to a switch element which is closed. | 10-16-2008 |