# US 12,001,253 B2 · Wearable electronic device with thermal energy transfer system and corresponding methods > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,001,253 B2 - Document ID: US12001253B2 - Status: Granted - Kind: B2 - Application number: 17/835,585 - Filed: 2022-06-08 - Published: 2023-12-14 - Granted: 2024-06-04 - Earliest claimed: 2022-06-08 - Assignees: Motorola Mobility LLC - Applicants: Motorola Mobility LLC - Inventors: Maninder S Sehmbey; Alberto R Cavallaro; Ngee J Lee - Web page: https://patentgrep.com/patent/US12001253B2 ## CPC - G06F 1/203: {for portable computers, e.g. for laptops} - G06F 1/163: {Wearable computers, e.g. on a belt} - G06F 1/1684: {Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675} - G06F 1/1688: {the I/O peripheral being integrated loudspeakers} - H05K 7/20981: {Liquid coolant without phase change} - G06F 1/206: {comprising thermal management} - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS ## Abstract A wearable electronic device includes a first device housing coupled to a second device housing by at least one strap. The wearable electronic device includes heat generating electronics situated within the first device housing. A heat pipe thermally coupled to the heat generating electronics transfers thermal energy from the heat generating electronics through the at least one neck strap to the second device housing. ## Claims ### Claim 1 A wearable electronic device, comprising: a first device housing coupled to a second device housing by at least one strap; heat generating electronics situated within the first device housing; a heat pipe thermally coupled to the heat generating electronics, the heat pipe transferring thermal energy from the heat generating electronics through the at least one strap to the second device housing; and other heat generating electronics situated within the second device housing; wherein the heat generating electronics situated within the first device housing generate more heat than the other heat generating electronics. ### Claim 2 (depends on 1) The wearable electronic device of claim 1, further comprising a heat spreader situated within the first device housing and a thermal flange thermally coupling the heat pipe to the heat generating electronics situated within the first device housing. ### Claim 3 (depends on 1) The wearable electronic device of claim 1, further comprising: a heat spreader situated within the second device housing, the heat spreader dissipating the thermal energy transferred by the heat pipe through the at least one strap through the second device housing; and a thermal flange thermally coupling the heat spreader to the heat pipe. ### Claim 4 (depends on 3) The wearable electronic device of claim 3, further comprising: a printed circuit board supporting the heat generating electronics; and another thermal flange thermally coupling the heat pipe to the printed circuit board. ### Claim 5 (depends on 4) The wearable electronic device of claim 4, further comprising a thermal interface material positioned between one or both of the thermal flange and the printed circuit board and/or the another thermal flange and the heat spreader. ### Claim 6 (depends on 4) The wearable electronic device of claim 4, wherein the heat spreader comprises a vapor chamber. ### Claim 7 (depends on 3) The wearable electronic device of claim 3, further comprising: a printed circuit board supporting the heat generating electronics; and another heat spreader situated in the first device housing and thermally coupling the heat pipe to the heat generating electronics. ### Claim 8 (depends on 7) The wearable electronic device of claim 7, wherein the printed circuit board and the heat spreader are physically separated. ### Claim 9 (depends on 1) The wearable electronic device of claim 1, wherein: the first device housing comprises an anterior pendant; the second device housing comprises a posterior pendant; the at least one strap comprises a first neck strap coupling a first side of the anterior pendant to a first side of the posterior pendant and a second neck strap coupling a second side of the anterior pendant to a second side of the posterior pendant; and the heat pipe comprises a flexible heat pipe passing through the first neck strap. ### Claim 10 (depends on 9) The wearable electronic device of claim 9, wherein the second neck strap comprises a first second neck strap portion and a second second neck strap portion, further comprising a coupler to attach the first second neck strap portion and the second second neck strap portion together. ### Claim 11 A method of cooling a wearable electronic device, the method comprising: removing thermal energy from a first device housing of the wearable electronic device; transferring the thermal energy through a flexible heat pipe passing from the first device housing, through a strap coupling the first device housing to a second device housing, and into the second device housing; and dissipating the thermal energy through the second device housing; wherein the dissipating the thermal energy through the second device housing comprises delivering the thermal energy to another heat spreader situated within the second device housing. ### Claim 12 (depends on 11) The method of claim 11, wherein the removing the thermal energy comprises transferring the thermal energy from heat generating electronics situated within the first device housing through a heat spreader to the flexible heat pipe. ### Claim 13 (depends on 11) The method of claim 11, wherein the another heat spreader situated within the second device housing comprises a thermally conductive metal. ### Claim 14 (depends on 11) The method of claim 11, wherein the another heat spreader comprises a vapor chamber. ### Claim 15 A wearable electronic device, comprising: an anterior pendant comprising heat generating electronics situated therein; a posterior pendant comprising a heat spreader situated therein; a first neck strap coupling a first side of the anterior pendant to a first side of the posterior pendant; a second neck strap coupling a second side of the anterior pendant to a second side of the posterior pendant; and a flexible heat pipe thermally coupled to the heat generating electronics and the heat spreader, the flexible heat pipe transferring thermal energy from the heat generating electronics to the heat spreader for dissipation through the posterior pendant. ### Claim 16 (depends on 15) The wearable electronic device of claim 15, further comprising another heat spreader situated within the anterior pendant and a thermal flange thermally coupling the flexible heat pipe to the heat generating electronics. ### Claim 17 (depends on 16) The wearable electronic device of claim 16, further comprising a printed circuit board situated within the anterior pendant and supporting the heat generating electronics, wherein the another heat spreader is physically separated from the printed circuit board. ### Claim 18 (depends on 15) The wearable electronic device of claim 15, further comprising a printed circuit board situated within the anterior pendant and supporting the heat generating electronics and a thermal flange thermally coupling the flexible heat pipe to the printed circuit board, wherein the thermal flange is bolted to the printed circuit board. ### Claim 19 (depends on 15) The wearable electronic device of claim 15, wherein the flexible heat pipe passes only through the first neck strap. ### Claim 20 (depends on 15) The wearable electronic device of claim 15, wherein the wearable electronic device comprises a plurality of audio outputs, the plurality of audio outputs consisting of: a left channel audio signal output situated at a first end of the posterior pendant; a right channel audio signal output situated at a second end of the posterior pendant separated from the first end of the posterior pendant by a posterior pendant body; and a single combined left channel and right channel audio signal output situated at a cranial edge of the anterior pendant.