# US 12,004,283 B2 · Electromagnetic wave reducing heaters and devices and saunas > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,004,283 B2 - Document ID: US12004283B2 - Status: Granted - Kind: B2 - Application number: 18/186,847 - Filed: 2023-03-20 - Published: 2023-07-20 - Granted: 2024-06-04 - Earliest claimed: 2011-03-25 - Assignees: Sauna Works Inc. - Applicants: Sauna Works Inc. (aka Far Infrared Sauna Technology Co.) - Inventors: Raleigh C. Duncan; Andrew Kaps - Web page: https://patentgrep.com/patent/US12004283B2 ## CPC - H05B 6/44: having more than one coil or coil segment - A61H 33/063: {Heaters specifically designed therefor} - H01F 27/36: Electric or magnetic shields or screens (movable for varying inductance H01F21/10) - H05B 3/26: heating conductor mounted on insulating base {(for transparent areas H05B3/84, H05B3/86)} - H05B 6/10: Induction heating apparatus, other than furnaces, for specific applications - A61H 2033/061: {Artificial hot-air baths} - A61H 2201/0221: Mechanism for heating or cooling - H05B 2203/011: Heaters using laterally extending conductive material as connecting means - H05B 2203/013: Heaters using resistive films or coatings - H05B 2203/014: Heaters using resistive wires or cables not provided for in H05B3/54 - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL - A61H: PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY (electrotherapy, magnetotherapy, radiation therapy or ultrasound therapy A61N) - H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES ## Abstract Systems may include a heater including a plurality of heating elements that may include a first heating element configured to generate heat based on a first current, and a second heating element configured to generate heat based on a second current. Systems may further include an electromagnetic (EM) radiation reducing device configured to cancel electromagnetic emissions from the heater. The EM radiation reducing device may include a first EM radiation reduction element positioned adjacent to a first side of the heater, and a second EM radiation reduction element positioned adjacent to a second side of the heater, where the first and second EM radiation reduction elements have geometries configured based, at least in part, on the heater. ## Claims ### Claim 1 A system comprising: a heater having a first heating element and a second heating element, the first heating element configured to generate heat using a first current and the second heating element configured to generate heat using a second current; and an electromagnetic (EM) radiation reducing device configured to reduce electromagnetic emissions from the first heating element and the second heating element, the EM radiation reducing device having a first electromagnetic (EM) radiation reduction element positioned adjacent to a first side of the heater and a second EM radiation reduction element positioned adjacent to a second side of the heater, wherein the first EM radiation reduction element has an elliptical curvature and geometry based at least in part on the heater. ### Claim 2 (depends on 1) The system of claim 1, wherein the second EM radiation reduction element has an elliptical curvature and geometry based at least in part on the heater. ### Claim 3 (depends on 2) The system of claim 2, wherein the first and second EM radiation reduction elements have elliptical curvatures configured to surround, at least in part, the first heating element and the second heating element. ### Claim 4 (depends on 3) The system of claim 3, wherein the heater is a planar heater, and wherein the first heating element and the second heating element are planar heating elements. ### Claim 5 (depends on 4) The system of claim 4, wherein the first planar heating element and the second planar heating element are arranged such that their poles are opposite to each other. ### Claim 6 (depends on 5) The system of claim 5, wherein the first and second currents are alternating currents. ### Claim 7 (depends on 1) The system of claim 1, wherein the EM radiation reducing device further comprises: a first frame coupled to the first EM radiation reduction element; a second frame coupled to the second EM radiation reduction element; and a plurality of couplers configured to couple the first frame to the second frame, and further configured to hold the heater in place. ### Claim 8 (depends on 1) The system of claim 1, wherein the EM radiation reducing device is coupled to a circuit ground. ### Claim 9 (depends on 1) The system of claim 1, wherein the EM radiation is extremely low frequency (ELF) EM radiation. ### Claim 10 (depends on 1) The system of claim 1, wherein the heater is included in a plurality of heaters, wherein the EM radiation reducing device is included in a plurality of EM radiation reducing devices, and wherein the plurality of heaters and the plurality of EM radiation reducing devices are included in a sauna. ### Claim 11 (depends on 1) The system of claim 1, wherein the heater is removably coupled to the EM radiation reducing device. ### Claim 12 A sauna comprising: a heater having a first heating element and a second heating element, the first heating element configured to generate heat using a first current and the second heating element configured to generate heat using a second current; an electromagnetic (EM) radiation reducing device configured to reduce electromagnetic emissions from the first heating element and the second heating element, the EM radiation reducing device having a first electromagnetic (EM) radiation reduction element positioned adjacent to a first side of the heater and a second EM radiation reduction element positioned adjacent to a second side of the heater, wherein the first EM radiation reduction element has an elliptical curvature and geometry based at least in part on the heater; and a sitting area positioned near the first side of the heater. ### Claim 13 (depends on 12) The sauna of claim 12, wherein the second EM radiation reduction element has an elliptical curvature and geometry based at least in part on the heater. ### Claim 14 (depends on 13) The sauna of claim 13, wherein the first and second EM radiation reduction elements have elliptical curvatures configured to surround, at least in part, the first heating element and the second heating element. ### Claim 15 (depends on 14) The sauna of claim 14, wherein the heater is a planar heater, and wherein the first heating element and the second heating element are planar heating elements. ### Claim 16 (depends on 15) The sauna of claim 15, wherein the first planar heating element and the second planar heating element are arranged such that their poles are opposite to each other. ### Claim 17 (depends on 16) The sauna of claim 16, wherein the first and second currents are alternating currents. ### Claim 18 (depends on 12) The sauna of claim 12, wherein the EM radiation reducing device further comprises: a first frame coupled to the first EM radiation reduction element; a second frame coupled to the second EM radiation reduction element; and a plurality of couplers configured to couple the first frame to the second frame, and further configured to hold the heater in place. ### Claim 19 (depends on 12) The sauna of claim 12, wherein the EM radiation reducing device is coupled to a circuit ground. ### Claim 20 (depends on 12) The sauna of claim 12, wherein the EM radiation is extremely low frequency (ELF) EM radiation.