# US 9,752,779 B2 · Heating assembly > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,752,779 B2 - Document ID: US9752779B2 - Status: Granted - Kind: B2 - Application number: 14/192,822 - Filed: 2014-02-27 - Published: 2014-09-04 - Granted: 2017-09-05 - Earliest claimed: 2013-03-02 - Applicants: David Deng - Inventors: David Deng - Web page: https://patentgrep.com/patent/US9752779B2 ## CPC - F23N 1/002: {using electronic means (F23N1/04 - F23N1/10 take precedence)} - F23C 1/08: liquid and gaseous fuel - F23N 5/102: {using electronic means} - F23N 5/242: {using electronic means} - F23N: REGULATING OR CONTROLLING COMBUSTION (control devices specially adapted for combustion apparatus in which combustion takes place in a fluidised bed of fuel or other particles F23C10/28; condition responsive controls for regulating combustion in domestic stoves with open fires for solid fuel F24B1/187) - F23C: METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN {A CARRIER GAS OR} AIR (burners F23D) ## Abstract A heating assembly can include a gas hook-up and a pressure switch. The pressure switch can be in fluid communication with the gas hook-up and be movable at a predetermined threshold pressure from a first position to a second position. The pressure switch can be further configured such that if a fuel is connected to the gas hook-up that has a delivery pressure either above the predetermined threshold pressure in one situation or below the predetermined threshold pressure in another, the fuel will act on the pressure switch to move it from the first position to the second position. ## Claims ### Claim 1 A heater assembly, comprising: a housing comprising: a first gas hook-up; a first pressure regulator; a first flow path extending between the first gas hook-up and the first pressure regulator; a second flow path; and a pressure switch in fluid communication with the first gas hook-up upstream from the first pressure regulator, the pressure switch being movable from a first position to a second position when a delivery pressure of a fuel at the first gas hook-up is within a predetermined delivery pressure range; wherein the pressure switch is configured such that if the fuel connected to the first gas hook-up has a delivery pressure within the predetermined delivery pressure range, the fuel will act on the pressure switch to move it from the first position to the second position which movement opens or closes the second flow path through the housing. ### Claim 2 (depends on 1) The heater assembly of claim 1, the housing further comprising a second gas hook-up. ### Claim 3 (depends on 2) The heater assembly of claim 2, the housing further comprising a second pressure regulator and a third flow path extending between the second gas hook-up and the second pressure regulator. ### Claim 4 (depends on 1) The heater assembly of claim 1, further comprising a control valve, a pilot and a burner. ### Claim 5 (depends on 4) The heater assembly of claim 4, wherein the second flow path receives fuel from the control valve and directs fuel to the pilot. ### Claim 6 (depends on 4) The heater assembly of claim 4, wherein the second flow path receives fuel from the control valve and directs fuel to the burner. ### Claim 7 (depends on 1) The heater assembly of claim 1, further comprising a bypass channel and a valve, the bypass channel connected to the second flow path to allow fluid flow to bypass the pressure switch when the valve is in an open position. ### Claim 8 (depends on 7) The heater assembly of claim 7, where the valve comprises a screw having a first position preventing flow through the bypass channel and a second position allowing flow through the bypass channel. ### Claim 9 (depends on 1) The heater assembly of claim 1, wherein the pressure switch comprises a first inlet adjacent the first gas hook-up to allow fluid to flow into the pressure switch. ### Claim 10 (depends on 9) The heater assembly of claim 9, wherein the pressure switch comprises a diaphragm and a valve member. ### Claim 11 (depends on 10) The heater assembly of claim 10, wherein the diaphragm separates fluid within the inlet from fluid within the second flow path. ### Claim 12 (depends on 1) The heater assembly of claim 1, wherein the pressure switch further comprises first and second electrical contacts; and a movable contact member, wherein the second flow path is an electrical flow path and movement of the pressure switch moves the movable contact member between engaged and disengaged positions. ### Claim 13 (depends on 1) The heater assembly of claim 1, further comprising an electrical bypass and a valve connected to the second flow path configured to allow an electric current to bypass the pressure switch when the valve is in a closed position. ### Claim 14 A heater assembly, comprising: a first gas hook-up; a first pressure regulator; a first flow path extending between the first gas hook-up and the pressure regulator; a second flow path; a valve positioned within the second flow path; and a pressure switch in fluid communication with the first gas hook-up upstream from the first pressure regulator, the pressure switch being movable from a first position to a second position when a delivery pressure of a fuel at the first gas hook-up is within a predetermined delivery pressure range; wherein the pressure switch is configured such that if the fuel connected to the first gas hook-up has a delivery pressure within the predetermined delivery pressure range, the fuel will act on the pressure switch to move it from the first position to the second position which movement opens or closes the valve in the second flow path. ### Claim 15 (depends on 14) The heater assembly of claim 14, further comprising a control valve, a pilot and a burner. ### Claim 16 (depends on 15) The heater assembly of claim 15, wherein the second flow path receives fuel from the control valve and directs fuel to the pilot. ### Claim 17 (depends on 15) The heater assembly of claim 15, wherein the second flow path receives fuel from the control valve and directs fuel to the burner. ### Claim 18 (depends on 14) The heater assembly of claim 14, wherein the valve is part of the pressure switch. ### Claim 19 (depends on 14) The heater assembly of claim 14, wherein the valve is part of a control valve. ### Claim 20 (depends on 14) The heater assembly of claim 14, wherein the pressure switch further comprises electrical contacts and the second flow path is an electrical flow path.