# US 2023/0276162 A1 · On-Ear Charging For Wireless Hearables > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0276162 A1 - Document ID: US20230276162A1 - Status: Published application - Kind: A1 - Application number: 17/682,962 - Filed: 2022-02-28 - Published: 2023-08-31 - Earliest claimed: 2022-02-28 - Assignees: NuCurrent, Inc. - Applicants: NuCurrent, Inc. - Inventors: Md Nazmul Alam; Matt Zamborsky; Jay Knobloch - Web page: https://patentgrep.com/patent/US20230276162A1 ## CPC - H04R 1/1025: Accumulators specially adapted for earpieces; Arrangements specially adapted for charging thereof - H02J 7/70: characterised by the mechanical construction - H02J 7/731: {specially adapted for holding portable devices containing batteries (H02J7/751 takes precedence)} - 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 50/10: using inductive coupling - H02J 50/12: of the resonant type - H04R 1/1016: {Earpieces of the intra-aural type} - H04R 2420/07: Applications of wireless loudspeakers or wireless microphones - H04R: LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS (producing sounds with frequency not determined by supply frequency G10K) - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY ## Abstract A wireless power transfer system is provided for mobile charging of one or more in-use earphones. The wireless power transfer system includes a wireless power transfer antenna configured for coupling with an antenna of a wireless receiver system within each earphone while the earphone is in the ear of a user. An input power source is linked to the wireless transmission system, and a retention mechanism maintains the wireless transmission system in a coupled relationship with the wireless receiver system of the earphone while the earphone is in the ear of the user. ## Claims ### Claim 1 A wireless power transfer system for mobile charging of one or more earphones while the one or more earphones are in use by a user, the wireless power transfer system comprising: a wireless transmission system having a wireless power transfer antenna configured for coupling with an antenna of a wireless receiver system within the earphone while the earphone is in the ear of a user; an input power source linked to the wireless transmission system; and a retention mechanism for maintaining the wireless transmission system in a coupled relationship with the wireless receiver system of the earphone while the earphone is in the ear of the user. ### Claim 2 (depends on 1) The wireless power transfer system according to claim 1, wherein the input power source is packaged with the wireless transmission system. ### Claim 3 (depends on 1) The wireless power transfer system according to claim 1, wherein the retention mechanism comprises at least one magnet associated with one of the wireless transmission system and the earphone. ### Claim 4 (depends on 3) The wireless power transfer system according to claim 3, wherein the at least one magnet is of sufficient strength to maintain the wireless transmission system in a coupled relationship with the earphone when the wireless transmission system is located behind the user's ear. ### Claim 5 (depends on 3) The wireless power transfer system according to claim 3, wherein the at least one magnet is of sufficient strength to maintain the wireless transmission system in a coupled relationship with the earphone when the wireless transmission system is located on a surface of the earphone. ### Claim 6 (depends on 1) The wireless power transfer system of claim 1, wherein the wireless power transfer antenna couples with the antenna of the wireless receiver system at an operating frequency in a range of about 13.553 MHz to about 13.567 MHz. ### Claim 7 A wireless power transfer system for mobile charging of one or more earphones while the one or more earphones are in use by a user, the wireless power transfer system comprising: an earphone having therein a wireless receiver system having a wireless power receiving antenna; a wireless transmission system having a wireless power transfer antenna configured for coupling with the wireless power receiving antenna of the earphone while the earphone is in the ear of a user; an input power source linked to the wireless transmission system; and a retention mechanism for maintaining the wireless transmission system in a coupled relationship with the wireless receiver system of the earphone while the earphone is in the ear of the user. ### Claim 8 (depends on 7) The wireless power transfer system according to claim 7, wherein the input power source is packaged with the wireless transmission system. ### Claim 9 (depends on 7) The wireless power transfer system according to claim 7, wherein the retention mechanism comprises at least one magnet associated with one of the wireless transmission system and the earphone. ### Claim 10 (depends on 9) The wireless power transfer system according to claim 9, wherein the at least one magnet is of sufficient strength to maintain the wireless transmission system in a coupled relationship with the earphone when the wireless transmission system is located behind the user's ear. ### Claim 11 (depends on 9) The wireless power transfer system according to claim 9, wherein the at least one magnet is of sufficient strength to maintain the wireless transmission system in a coupled relationship with the earphone when the wireless transmission system is located on a surface of the earphone. ### Claim 12 (depends on 7) The wireless power transfer system of claim 7, wherein the wireless power transfer antenna couples with the antenna of the wireless receiver system at an operating frequency in a range of about 13.553 MHz to about 13.567 MHz. ### Claim 13 A wireless charging system for charging a pair of headphones while in use by a user, the wireless charging system comprising: two earphones, each having therein a respective wireless power receiver system; two wireless power transmission systems configured for respectively coupling with the respective wireless power receiving systems of the earphones while the earphones are located in respective ears of a user; at least one input power source linked to the two wireless power transmission systems; and a retention mechanism for maintaining the wireless transmission systems in a coupled relationship with the respective wireless power receiver systems of the earphones while the earphones are located in the ears of the user.