# US 12,014,867 B2 · Connection system for exchanging electrical signals with magnetic symmetrical connectors > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,014,867 B2 - Document ID: US12014867B2 - Status: Granted - Kind: B2 - Application number: 17/999,181 - Filed: 2021-05-20 - Published: 2023-08-03 - Granted: 2024-06-18 - Earliest claimed: 2020-05-20 - Assignees: Safran Electronics & Defense - Applicants: Safran Electronics & Defense - Inventors: François Guillot; Patrice Chetanneau; Pascal Spoor - Web page: https://patentgrep.com/patent/US12014867B2 ## CPC - H01F 38/14: Inductive couplings - H01F 27/255: made from particles (H01F27/26 takes precedence) - H01F 27/2804: {Printed windings} - H01F 27/2885: {with shields or electrodes (shields or electrodes for pancake coils H01F27/2871; construction of electric or magnetic shields or screens H01F27/36)} - H01F 27/363: {made of electrically conductive material} - H01R 13/62: Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement - H04B 5/26: using coils - H04B 5/266: {One coil at each side, e.g. with primary and secondary coils} - H01F 27/2819: {Planar transformers with printed windings, e.g. surrounded by two cores and to be mounted on printed circuit} - H01F 2038/143: {for signals} - H04B 5/70: specially adapted for specific purposes - H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES - H01R: ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS - H04B: TRANSMISSION ## Abstract A connection system for exchanging electrical signals includes a first symmetrical connector and a second symmetrical connector. Each symmetrical connector has at least one magnetic core provided with at least one turn. The symmetrical connectors are produced in a substrate made of insulating material so as to form a half of a coupling transformer. At least one half of the coupling transformer of each connector is arranged opposite one another so as to be able to exchange a magnetic flux. The electrical signals are emitted by the first connector in the form of a magnetic flux, and the second connector generates the electrical signals on receiving the magnetic flux. ## Claims ### Claim 1 A connection system for exchanging electrical signals, comprising a first symmetrical connector and a second symmetrical connector, each symmetrical connector comprising at least one magnetic core provided with at least one turn, the symmetrical connectors being produced in a substrate made of insulating material, so as to form a half of a coupling transformer, at least one half of a coupling transformer of each connector being disposed opposite to each other so as to exchange a magnetic flux, the electrical signals being emitted by the first connector in the form of a magnetic flux, the second connector generating the electrical signals on receiving the magnetic flux, wherein a capacitive electrical shielding layer is disposed on a surface of the insulating substrate of each symmetrical connector, openings being formed in the shielding layer so as not to come into contact with the magnetic cores and so as to allow the passage of magnetic fluxes, the shielding layer being open between the different portions of the same magnetic core flush with the surface of a symmetrical connector so as not to create a parasitic turn creating a short circuit of the coupling transformer. ### Claim 2 (depends on 1) The connection system according to claim 1, wherein at least one of the symmetrical connectors is provided with at least one elastic connecting element allowing generating a controlled bearing force between the symmetrical connectors, the connection between the symmetrical connector provided with such an elastic element and the rest of the electrical circuit being then of the flexible type so as to enable a position deflection of the symmetrical connector. ### Claim 3 (depends on 2) The connection system according to claim 2, wherein a protective skirt is disposed around at least one of the symmetrical connectors so as to protect it when it is not connected to the other symmetrical connector. ### Claim 4 (depends on 1) The connection system according to claim 1, wherein an air gap is formed between the magnetic cores disposed opposite to each other. ### Claim 5 (depends on 1) The connection system according to claim 1, wherein the magnetic cores are produced by screen printing an assembly of magnetic powder bonded by an epoxy resin. ### Claim 6 (depends on 5) The connection system according to claim 5, wherein the magnetic powder is of formula Y3Fe5O12. ### Claim 7 (depends on 1) The connection system according to claim 1, wherein the magnetic core is tripod-shaped, C-shaped or E-shaped. ### Claim 8 (depends on 7) The connection system according to claim 7, wherein each connector comprises a free surface, the connectors being disposed opposite to each other via the respective free surfaces thereof, a surface of the turns being parallel to the free surface of the connector when the magnetic core is tripod-shaped, the surface of the turns being perpendicular to the free surface of the connector when the magnetic core is C-shaped or E-shaped. ### Claim 9 (depends on 1) An aircraft comprising a connection system according to claim 1, wherein the first connector is connected to an on-board computer, the second connector being secured to the aircraft and connected to a communication harness of the aircraft.