# US 12,010,766 B2 · Window heating apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,010,766 B2 - Document ID: US12010766B2 - Status: Granted - Kind: B2 - Application number: 16/692,706 - Filed: 2019-11-22 - Published: 2021-05-27 - Granted: 2024-06-11 - Earliest claimed: 2019-11-22 - Assignees: Honeywell International Inc. - Applicants: Honeywell International Inc. - Inventors: Ondrej Jemelka; Jan Adamek; Radek Stupka; Marek Fikera - Web page: https://patentgrep.com/patent/US12010766B2 ## CPC - H05B 3/84: Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields - G01N 21/0332: {with temperature control (control of temperature G05D23/00; cryostats F17C3/08)} - G01N 21/3504: for analysing gases, e.g. multi-gas analysis - G01N 33/0029: {Cleaning of the detector} - G02B 7/028: {with means for compensating for changes in temperature or for controlling the temperature; thermal stabilisation} - G02B 27/0006: {with means to keep optical surfaces clean, e.g. by preventing or removing dirt, stains, contamination, condensation (G02B1/18 takes precedence; cleaning in general B08B)} - H05B 3/26: heating conductor mounted on insulating base {(for transparent areas H05B3/84, H05B3/86)} - H05B 2214/02: Heaters specially designed for de-icing or protection against icing - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL - G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q) - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract Various example embodiments described herein relate to a window heating apparatus. The window heating apparatus comprises a frame, a heater assembly disposed on the frame, and a glass window. The heater assembly comprises a base having a first side and a second side and defines a first opening. The heater assembly comprises a Printed Circuit Board (PCB) laminated on the first side of the base along an inner edge of the base. The PCB defines a second opening, wherein the first opening and the second opening are aligned coaxially. The glass window is disposed on the base and the second side of the base is in direct contact with the glass window. ## Claims ### Claim 1 A radiation-based gas detector, comprising: a frame comprising: a support member, and a ridge extending radially outward from an inner surface of the frame, wherein the frame defines a groove proximal to the ridge; a heater assembly comprising: a base defining a first opening, and at least one tooth extending radially from a periphery of the first opening; and a printed circuit board having at least one heating element and defining a second opening, wherein the first opening and the second opening are aligned coaxially, the at least one heating element is disposed on the at least one tooth and the at least one heating element is placed outside the ridge; and a glass window disposed adjacent the heater assembly, wherein the glass window is coupled to the support member of the frame, wherein the base of the heater assembly is squeezed between the ridge of the frame and the glass window, wherein the groove is configured to absorb pressure applied on the glass window, and wherein a channel is defined between the glass window and the frame to vent gases. ### Claim 2 (depends on 1) The radiation-based gas detector of claim 1, further comprising a front cover adapted to secure the glass window and the heater assembly to the frame. ### Claim 3 (depends on 2) The radiation-based gas detector of claim 2, wherein the front cover includes a third opening, wherein the first opening, the second opening and the third opening are coaxially aligned. ### Claim 4 (depends on 1) The radiation-based gas detector of claim 1, wherein an inner edge of the at least one tooth is radially spaced from a center of the first opening. ### Claim 5 (depends on 1) The radiation-based gas detector of claim 1, further comprising at least one temperature sensor configured to determine a temperature of the glass window. ### Claim 6 (depends on 1) The radiation-based gas detector of claim 1, wherein the at least one heating element comprises a resistor. ### Claim 7 (depends on 1) The radiation-based gas detector of claim 1, wherein the groove is defined at the inner surface along an inner circumference of the frame. ### Claim 8 (depends on 7) The radiation-based gas detector of claim 7, wherein the groove is configured to absorb pressure applied on the glass window based on a compression of the groove within the predefined spacing. ### Claim 9 An apparatus for detecting gas based on radiations, comprising: a frame comprising: a support member; and a ridge extending radially outward from an inner surface of the frame, wherein the frame further defines a groove proximal to the ridge; a heater assembly comprising: a base defining a first opening about a center axis of the base; at least one tooth extending radially from a periphery of the first opening; and a printed circuit board laminated on the base of the heater assembly, the printed circuit board having at least one heating element and defining a second opening, the second opening having a same diameter as the first opening, wherein the first opening and the second opening are aligned coaxially, wherein the at least one heating element is disposed on the at least one tooth and the at least one heating element is placed outside the ridge; and a glass window disposed on the heater assembly, wherein the glass window is in direct contact with the base of the heater assembly, wherein the glass window is coupled to the support member of the frame, wherein the base of the heater assembly is squeezed between the ridge of the frame and the glass window, wherein the groove is configured to absorb pressure applied on the glass window, wherein the heater assembly is disposed between the frame and the glass window, and wherein a channel is defined between the glass window and the frame to vent gases. ### Claim 10 (depends on 9) The apparatus of claim 9, further comprising a front cover, wherein a second channel is defined between a rear side of the front cover and a front side of the glass window to allow a gas to pass therethrough. ### Claim 11 (depends on 10) The apparatus of claim 10, wherein the front cover includes a third opening about a center of an axis of the front cover, wherein the first opening, the second opening, and the third opening align coaxially. ### Claim 12 (depends on 10) The apparatus of claim 10, wherein the front cover houses the glass window and the heater assembly when the front cover is secured with the frame. ### Claim 13 (depends on 9) The apparatus of claim 9, further comprising at least one temperature sensor configured to determine a temperature of the glass window.