# US 10,374,464 B2 · Wireless charging coil > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,374,464 B2 - Document ID: US10374464B2 - Status: Granted - Kind: B2 - Application number: 15/854,197 - Filed: 2017-12-26 - Published: 2018-05-17 - Granted: 2019-08-06 - Earliest claimed: 2013-11-25 - Assignees: A.K. Stamping Company, Inc. - Applicants: A.K. Stamping Company, Inc. - Inventors: Arthur Kurz; Bernard Duetsch; Joshua Kurz - Web page: https://patentgrep.com/patent/US10374464B2 ## CPC - H01F 27/2847: {Sheets; Strips (H01F27/2866 takes precedence)} - H01F 5/00: Coils (superconducting coils H01F6/06; fixed inductances of the signal type H01F17/00) - H01F 27/2852: {Construction of conductive connections, of leads} - H01F 27/2871: {Pancake coils} - H01F 27/366: {made of ferromagnetic material} - H01F 38/14: Inductive couplings - H02J 7/70: characterised by the mechanical construction - H02J 50/005: {Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices} - H02J 50/12: of the resonant type - H04B 5/263: {Multiple coils at either side} - H04B 5/79: for data transfer in combination with power transfer - H01F 27/36: Electric or magnetic shields or screens (movable for varying inductance H01F21/10) - H02J 50/10: using inductive coupling - Y10T 29/4902: Electromagnet, transformer or inductor - H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - H04B: TRANSMISSION - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A wireless charging coil assembly comprises a first stamped coil having a first trace, a second stamped coil having a second trace, and a film having a first side and a second side. The first stamped coil is adhered to the first side of the film and the second stamped coil is adhered to the second side of the film. At least a first portion of the first trace of the first stamped coil and at least a first portion of the second trace of the second stamped coil are electrically connected. ## Claims ### Claim 1 A wireless charging coil assembly comprising: a first stamped coil having a first trace; a second stamped coil having a second trace; and a film having a first side, a second side, a first aperture, and a second aperture, the first stamped coil adhered to the first side and the second stamped coil adhered to the second side, wherein the first stamped coil is adhered to the first side with a first portion of the first trace adjacent the first aperture and a second portion of the first trace adjacent the second aperture, and the second stamped coil is adhered to the second side with a first portion of the second trace adjacent the first aperture and a second portion of the second trace adjacent the second aperture, and wherein at least the first portion of the first trace of the first stamped coil and at least the first portion of the second trace of the second stamped coil are electrically connected through the first aperture. ### Claim 2 (depends on 1) The wireless charging coil assembly of claim 1, wherein the second portion of the first trace is positioned adjacent the second portion of the second trace. ### Claim 3 (depends on 1) The wireless charging coil assembly of claim 1, wherein the first portion of the first trace is a first inside end and the first portion of the second trace is a second inside end. ### Claim 4 (depends on 3) The wireless charging coil assembly of claim 3, wherein the first inside end and the second inside end include tabs having a square shape. ### Claim 5 (depends on 1) The wireless charging coil assembly of claim 1, wherein the second portion of the first trace is a first outside end and the second portion of the second trace is a second outside end. ### Claim 6 (depends on 5) The wireless charging coil assembly of claim 5, wherein the first outside end of the first trace and the second outside end of the second trace include tabs having a rectangular shape. ### Claim 7 (depends on 1) The wireless charging coil assembly of claim 1, wherein the first stamped coil and the second stamped coil are connected in series. ### Claim 8 (depends on 1) The wireless charging coil assembly of claim 1, further comprising an adhesive on the first side of the film and the second side of the film, the adhesive adhering the first stamped coil to the first side of the film and the second stamped coil to the second side film. ### Claim 9 (depends on 1) The wireless charging coil assembly of claim 1, wherein the film is a dielectric film. ### Claim 10 (depends on 1) The wireless charging coil assembly of claim 1, wherein the second portion of the first trace and the second portion of the second trace can be contacted through the first side of the film at the second aperture and through the second side of the film at the second aperture. ### Claim 11 A wireless charging coil assembly comprising: a first stamped coil having an first inside end, a first outside end, and a first trace extending between the first inside end and the first outside end; a second stamped coil having a second inside end, a second outside end, and a second trace extending between the second inside end and the second outside end; and a film having a first side, a second side, a first aperture, and a second aperture, the first stamped coil adhered to the first side with the first inside end adjacent the first aperture and the first outside end adjacent the second aperture, the second stamped coil adhered to the second side with the second inside end adjacent the first aperture and the second outside end adjacent the second aperture, wherein the first inside end of the first stamped coil and the second inside end of the second stamped coil are electrically connected. ### Claim 12 (depends on 11) The wireless charging coil assembly of claim 11, wherein the first outside end of the first trace is positioned adjacent the second outside end of the second trace. ### Claim 13 (depends on 11) The wireless charging coil assembly of claim 11, wherein the first outside end of the first trace and the second outside end of the second trace can be contacted through the first side of the film at the second aperture and through the second side of the film at the second aperture. ### Claim 14 (depends on 11) The wireless charging coil assembly of claim 11, wherein the first stamped coil and second stamped coil are connected in series. ### Claim 15 (depends on 11) The wireless charging coil assembly of claim 11, further comprising an adhesive on the first side of the film and the second side of the film, the adhesive adhering the first stamped coil to the first side of the film and the second stamped coil to the second side film. ### Claim 16 (depends on 11) The wireless charging coil assembly of claim 11, wherein the film is a dielectric film.