# US 7,613,273 B2 · Apparatus with a moving system and a stationary system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,613,273 B2 - Document ID: US7613273B2 - Status: Granted - Kind: B2 - Application number: 11/649,138 - Filed: 2007-01-03 - Published: 2007-08-02 - Granted: 2009-11-03 - Earliest claimed: 2006-01-12 - Assignees: Siemens Aktiengesellschaft - Inventors: Walter Beyerlein; Johann Kolar - Web page: https://patentgrep.com/patent/US7613273B2 ## CPC - A61B 6/56: {Details of data transmission or power supply, e.g. use of slip rings} - Y10S 378/901: Computer tomography program or processor - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS ## Abstract An apparatus includes a first, stationary system, in particular a stator, and a second system which is provided for moving relative to the first system, in particular an armature, a first and second electrical reference potentials which are assigned to the first system and the second system, respectively, and a coupler for potential coupling of the two reference potentials. The coupler is used for the potential coupling of a ground of the moving system to a ground of the stationary system in order to ensure a reliable data transmission between the systems. In order to achieve a coupling with a maximal service life and requires minimal maintenance, the coupler has a field coupling component for mechanically contactless potential coupling. ## Claims ### Claim 1 An apparatus comprising: a stationary system; a moving system, which is operable to move relative to the stationary system; a first reference potential assigned to the stationary system, and a second reference potential assigned to the moving system; and a coupler that is operable to potential couple the first and second reference potentials, wherein the coupler includes a field coupling component for mechanically contactless potential coupling. ### Claim 2 (depends on 1) The apparatus as claimed in claim 1, wherein the coupler comprises a capacitive element. ### Claim 3 (depends on 1) The apparatus as claimed in claim 1, wherein the coupler is disposed at least partly on an external wall of the moving system. ### Claim 4 (depends on 1) The apparatus as claimed in claim 1, further comprising a measuring device that is operable to measure a measured variable, which identifies a potential difference between the first and second reference potentials. ### Claim 5 (depends on 4) The apparatus as claimed in claim 4, wherein the measuring device is operable to capture a potential difference at the first reference potential as the measured variable. ### Claim 6 (depends on 5) The apparatus as claimed in claim 5, wherein the measuring device includes a measuring component, which operates according to a same principle as the field coupling component. ### Claim 7 (depends on 6) The apparatus as claimed in claim 6, wherein the measuring component and field coupling component are capacitors. ### Claim 8 (depends on 7) The apparatus as claimed in claim 7, wherein the measuring component comprises a first metal surface and a second metal surface located opposite to the first metal surface. ### Claim 9 (depends on 8) The apparatus as claimed in claim 8, wherein the first and second metal surfaces are approximately 20 cm×50 cm, and wherein the first and second metal surfaces are approximately 0.1 mm apart. ### Claim 10 (depends on 4) The apparatus as claimed in claim 4, wherein the measuring device comprises a separation capacitor that is operable to decouple the first reference potential. ### Claim 11 (depends on 4) The apparatus as claimed in claim 4, further comprising an amplifier that is operable to amplify a coupling variable, which is supplied to the field coupling component. ### Claim 12 (depends on 11) The apparatus as claimed in claim 11, further comprising a regulator that is operable to adjust the coupling variable of the coupler. ### Claim 13 (depends on 12) The apparatus as claimed in claim 12, wherein the regulator is configured to manage changes in the capacitances of the coupler and/or measuring device. ### Claim 14 (depends on 1) The apparatus as claimed in claim 1, wherein the apparatus is a computer tomography system. ### Claim 15 (depends on 1) The apparatus as claimed in claim 1, wherein the stationary system comprises a stator and the moving system comprises an armature. ### Claim 16 (depends on 1) The apparatus as claimed in claim 1, wherein the field coupling component comprises a first metal surface and a second metal surface located opposite to the first metal surface, and wherein the first and second metal surfaces are approximately 0.1 mm apart. ### Claim 17 (depends on 16) The apparatus as claimed in claim 16, wherein the first and second metal surfaces are approximately 20 cm×50 cm. ### Claim 18 (depends on 1) The apparatus as claimed in claim 1, comprising a data transmission device that includes a first unit in the stationary system and a second unit in the moving system, wherein the first unit and second unit are connected to a transmission line, which is operable to transmit data between the first unit and second unit in a contactless manner.