# US 12,138,372 B2 · Ultra low-leakage silicone-based heater thermally coupled to heat transfer body > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,138,372 B2 - Document ID: US12138372B2 - Status: Granted - Kind: B2 - Application number: 18/328,485 - Filed: 2023-06-02 - Published: 2024-03-14 - Granted: 2024-11-12 - Earliest claimed: 2023-06-02 - Assignees: Honeywell International Inc. - Applicants: Honeywell International Inc. - Inventors: Senthilkumar Mk; George Whyte; John Stopforth; Claudia Acosta; Marco Barron; Anton Jeysing - Web page: https://patentgrep.com/patent/US12138372B2 ## CPC - A61M 1/1664: {with temperature control} - A61F 7/0085: {Devices for generating hot or cold treatment fluids} - A61M 1/28: Peritoneal dialysis {; Other peritoneal treatment, e.g. oxygenation} - A61M 1/3623: {Means for actively controlling temperature of blood} - A61M 5/445: {the media being heated in the reservoir, e.g. warming bloodbags} - H05B 1/025: {For medical applications} - H05B 3/28: heating conductor embedded in insulating material - A61F 2007/0086: {with a thermostat} - A61F 2007/0096: {with a thermometer} - A61M 2205/0233: Conductive materials, e.g. antistatic coatings for spark prevention - A61M 2205/3368: Temperature - A61M 2205/3538: using electrical conduction through the body of the patient - A61M 2205/3633: thermally insulated - A61M 2205/3653: by Joule effect, i.e. electric resistance - A61M 2205/3673: thermo-electric, e.g. Peltier effect, thermocouples, semi-conductors - H05B 2203/021: Heaters specially adapted for heating liquids - A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)} - A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C) - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL ## Abstract Systems and methods include a heat transfer body with opposing major surfaces formed from a thermally conductive substrate in intimate thermal interaction with an alumina exterior surface that extends across the major surfaces of the body. In an illustrative example, the heat source may be a substantially planar, silicone-based heater source (P-SBHS). The heat transfer body may be configured to thermally interact, for example, heat from a heat source proximate a first of the major surfaces to a second of the major surfaces. A temperature sensor module may be located, for example, proximate to the first major surface such that a temperature sensor thermally interacts with the first major surface. The temperature sensor module may, for example, insulate the temperature sensor from the P-SBHS. ## Claims ### Claim 1 A heating apparatus comprising: a heat source having silicone-based layers comprising: a first silicone-based layer thermally coupled to a heat transfer body; a second silicone-based layer disposed on top of the first silicone-based layer; a heating element layer disposed on top of the second silicone-based layer; a third silicone-based layer disposed on top of the heating element layer; and a fourth silicone-based layer disposed on top of the third silicone-based layer, wherein each of the first silicone-based layer, the second silicone-based layer, the heating element layer, the third silicone-based layer, and the fourth silicone-based layer has at least one aperture; a temperature sensor disposed in the heat source via the at least one aperture of each of the first silicone-based layer, the second silicone-based layer, the heating element layer, the third silicone-based layer, and the fourth silicone-based layer; and a thermal breaker thermally coupled to the heat source and configured to shut off power to the heat source when the heat source exceeds a predetermined threshold for a predetermined time. ### Claim 2 (depends on 1) The heating apparatus of claim 1, wherein the heat transfer body is thermally coupled with the heat source and disposed proximate a bottom surface of the heat source, and wherein the heat transfer body comprises a thermally conductive material. ### Claim 3 (depends on 2) The heating apparatus of claim 2, wherein the thermally conductive material comprises aluminum. ### Claim 4 (depends on 1) The heating apparatus of claim 1, further comprising a thermal insulating module extending through the at least one aperture in the heat source, wherein the thermal insulating module comprises a cavity extending through the heat source. ### Claim 5 (depends on 4) The heating apparatus of claim 4, wherein the temperature sensor is inserted through the cavity of the thermal insulating module, wherein the temperature sensor is thermally coupled to the heat transfer body and thermally decoupled from the heat source, such that the temperature sensor is thermally insulated from direct heating effects of the heat source. ### Claim 6 (depends on 1) The heating apparatus of claim 1, wherein the heat transfer body is at least partially covered with a chemically formed layer of alumina to provide for substantial electrical insulation, such that electrical current leakage from the heat transfer body is reduced. ### Claim 7 (depends on 5) The heating apparatus of claim 5, further comprising a thermal compound disposed in the cavity of the thermal insulating module to facilitate a transfer of heat between the temperature sensor and the heat transfer body. ### Claim 8 (depends on 5) The heating apparatus of claim 5, further comprising an adhesive disposed in the cavity of the thermal insulating module for adhesively coupling the temperature sensor to an inner surface of the cavity of the thermal insulating module. ### Claim 9 (depends on 5) The heating apparatus of claim 5, wherein the temperature sensor comprises a thermocouple. ### Claim 10 (depends on 5) The heating apparatus of claim 5, wherein the temperature sensor comprises a thermistor. ### Claim 11 (depends on 1) The heating apparatus of claim 1, wherein the heat transfer body is a planar shape. ### Claim 12 (depends on 1) The heating apparatus of claim 1, wherein the heat source is a planar shape. ### Claim 13 (depends on 1) The heating apparatus of claim 1, further comprising a heater tray comprising a heater tray frame, where the heater tray frame comprises a cut-out to receive a heater subassembly. ### Claim 14 (depends on 13) The heating apparatus of claim 13, wherein the cut-out includes a slot configured to support the heater subassembly such that an upper surface of the heater subassembly is flush with an upper surface of the heater tray frame. ### Claim 15 (depends on 13) The heating apparatus of claim 13, wherein the heater tray is in a slide-in form factor. ### Claim 16 A heat source, comprising: a first silicone-based layer thermally coupled to a heat transfer body; a second silicone-based layer disposed on top of the first silicone-based layer; a heating element layer disposed on top of the second silicone-based layer; a third silicone-based layer disposed on top of the heating element layer; a fourth silicone-based layer disposed on top of the third silicone-based layer, wherein each of the first silicone-based layer, the second silicone-based layer, the heating element layer, the third silicone-based layer, and the fourth silicone-based layer has at least one aperture, wherein the heat transfer body is thermally coupled with the heat source proximate to a bottom surface of the heat source, and wherein the heat transfer body comprises a thermally conductive material; and a temperature sensor disposed in the heat source via the at least one aperture of each of the first silicone-based layer, the second silicone-based layer, the heating element layer, the third silicone-based layer, and the fourth silicone-based layer. ### Claim 17 (depends on 16) The heat source of claim 16, wherein the thermally conductive material comprises aluminum. ### Claim 18 (depends on 16) The heat source of claim 16, wherein the heat transfer body is at least partially covered with a chemically formed layer of alumina to provide for substantial electrical insulation, such that electrical current leakage from the heat transfer body is reduced. ### Claim 19 (depends on 16) The heat source of claim 16, wherein the heat source is a planar shape. ### Claim 20 (depends on 16) The heat source of claim 16, wherein the heat source is thermally coupled to a thermal breaker configured to shut off power to the heat source when the heat source exceeds a predetermined threshold for a predetermined time.