# US 2017/0284693 A1 · C wire creation system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0284693 A1 - Document ID: US20170284693A1 - Status: Published application - Kind: A1 - Application number: 15/089,551 - Filed: 2016-04-03 - Published: 2017-10-05 - Earliest claimed: 2016-04-03 - Inventors: MICHAEL ROBLEDO - Web page: https://patentgrep.com/patent/US20170284693A1 ## CPC - F24F 11/30: for purposes related to the operation of the system, e.g. for safety or monitoring - F24F 11/56: Remote control - F24F 11/62: characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values - F24F 11/63: Electronic processing - F24F 11/52: Indication arrangements, e.g. displays - F24F: AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING (removing dirt or fumes from areas where they are produced B08B15/00; vertical ducts for carrying away waste gases from buildings E04F17/02; tops for chimneys or ventilating shafts, terminals for flues F23L17/02) ## Abstract An HVAC system where either/both the heating apparatus or cooling apparatus are single or multistage and controlled by a thermostat capable of single or multistage operation through two connecting wires. A single control wire is repurposed to act as a “C” common wire to provide a return path for current in order to power a room thermostat. A code is transmitted via a wireless signal to a receiving microcontroller located in the HVAC heating or cooling unit. The receiving microcontroller interprets the signal and provides power, via relays, from the transformer to the appropriate terminal in the heating control thereby replacing the function of the repurposed wire. In essence, the wireless transmission in combination with a relay, replace the function of the white wire allowing it to be repurposed to a C wire. There is no possibility of a false trigger that commonly exists in shared wire systems. ## Claims ### Claim 1 A system to supply power to a thermostat, from an existing transformer, by replacing the function of a wire between a room thermostat and an HVAC heating or cooling unit in order for that wire to be repurposed and used as a return wire for current comprising: ### Claim 2 (depends on 1) A method according to claim 1, wherein a wire previously used for a heat ON function (typically white) is able to be repurposed to function as a C wire (typically black) providing a return path for current thereby providing power that can be used to power a thermostat. ### Claim 3 (depends on 1) A method according to claim 1, wherein the signal capture method is via wire, or selected from the group consisting of radio frequency, radar, infrared, visible light, laser, and ultrasonic; ### Claim 4 (depends on 1) A method according to claim 1, further comprising a microprocessor, firmware, and related circuitry to convert signals from said thermostat; ### Claim 5 (depends on 1) A method according to claim 1, wherein the signal transmitter for transmitting a signal using technology is selected from the group consisting of radio frequency, radar, infrared, visible light, laser, and ultrasonic; ### Claim 6 (depends on 1) A method according to claim 1, wherein the signal receiver for receiving a signal using technology is selected from the group consisting of radio frequency, radar, infrared, visible light, laser, and ultrasonic; ### Claim 7 (depends on 1) A method according to claim 1, wherein the transceiver for receiving and sending a signal using technology is selected from the group consisting of radio frequency, radar, infrared, visible light, laser, and ultrasonic; ### Claim 8 (depends on 1) A method according to claim 1, further comprising a microprocessor, firmware, and related circuitry to convert signals from signal receiver; ### Claim 9 (depends on 1) A method according to claim 1, wherein the HVAC system is 24 VAC. ### Claim 10 (depends on 1) A method according to claim 1, wherein a thermostat controls heating and/or cooling systems, whether they are gas, electric, evaporative, or refrigerated air. ### Claim 11 A system to provide a means of connecting a multistage room thermostat to a multistage HVAC heating or cooling unit utilizing two or more existing wires comprising: ### Claim 12 (depends on 11) A method according to claim 11, wherein a wireless signal and relay are used to replace the wire that is normally required to perform the function of heating or cooling high\low modes; ### Claim 13 (depends on 11) A method according to claim 11, wherein the signal capture method is via wire, or selected from the group consisting of radio frequency, radar, infrared, visible light, laser, and ultrasonic; ### Claim 14 (depends on 11) A method according to claim 11, further comprising a microprocessor and related circuitry to convert signals from said thermostat; ### Claim 15 (depends on 11) A method according to claim 11, wherein the signal transmitter for transmitting a signal using technology is selected from the group consisting of radio frequency, radar, infrared, visible light, laser, and ultrasonic; ### Claim 16 (depends on 11) A method according to claim 11, wherein the signal receiver for receiving a signal using technology is selected from the group consisting of radio frequency, radar, infrared, visible light, laser, and ultrasonic; ### Claim 17 (depends on 11) A method according to claim 11, wherein the transceiver for receiving and sending a signal using technology is selected from the group consisting of radio frequency, radar, infrared, visible light, laser, and ultrasonic; ### Claim 18 (depends on 11) A method according to claim 11, further comprising a microprocessor, firmware, and related circuitry to convert signals received from signal receiver; ### Claim 19 (depends on 11) A method according to claim 11, wherein the HVAC system is 24 VAC. ### Claim 20 (depends on 11) A method according to claim 11, wherein a thermostat controls heating and/or cooling systems, whether they are gas, electric, evaporative, or refrigerated air.