# US 12,007,147 B2 · Flexible connectors for water heater > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,007,147 B2 - Document ID: US12007147B2 - Status: Granted - Kind: B2 - Application number: 17/820,528 - Filed: 2022-08-17 - Published: 2023-02-23 - Granted: 2024-06-11 - Earliest claimed: 2021-08-19 - Assignees: A. O. Smith Corporation - Applicants: A. O. Smith Corporation - Inventors: Mark Murphy - Web page: https://patentgrep.com/patent/US12007147B2 ## CPC - F24H 9/136: {Arrangement of inlet valves used therewith} - F24H 4/04: Storage heaters - F24H 9/02: Casings; Cover lids; Ornamental panels - F24H 9/133: {Storage heaters} - F24H: FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL (steam generation F22) ## Abstract A water heater includes a tank defining an interior space adapted to contain water and a shroud over the water heater and defining a component space inside the shroud. A first pipe nipple is coupled to a spud of the water heater, the first pipe nipple and spud defining a non-collinear axis that is non-collinear with a pipe axis of a pipe to be fluidly connected to the tank. A flexible connector is connected at one end to the first pipe nipple along the non-collinear axis. A second end of the flexible connector is positioned collinear with the pipe axis. A second pipe nipple is coupled at one end to the second end of the flexible connector and coupled at an opposite end with the pipe. Fluid communication is established between the pipe and the interior space of the tank through the pipe nipple and flexible connector. ## Claims ### Claim 1 A water heater for connection to a pipe defining a pipe axis, the water heater comprising: a tank having a tank wall defining an interior space adapted to contain water; a shroud defining a component space over the tank; a heat source operable to heat the water; and a flexible connector extending through the component space and having a first end communicating with the interior space of the tank and a second end communicating through a top end of the shroud; wherein the first end of the flexible connector defines a non-collinear axis that is non-collinear with the pipe axis and the second end of the flexible connector defines a collinear axis that is collinear with the pipe axis, and wherein the water heater further comprises: a first rigid connector in the component space, the first rigid connector being collinear with the non-collinear axis and communicating between the first end of the flexible connector and the interior space of the tank, and second rigid connector outside of the component space, the second rigid connector being collinear with the collinear axis and communicating with the second end of the flexible connector. ### Claim 2 (depends on 1) The water heater of claim 1, further comprising a spud rigidly mounted to the tank wall and defining the non-collinear axis, the first rigid connector being rigidly mounted to the spud. ### Claim 3 (depends on 2) The water heater of claim 2, wherein the first rigid connector comprises a pipe nipple having a first end in threaded engagement with the spud, and a connector having a first port in threaded engagement with a second end of the pipe nipple and a second port in threaded engagement with the first end of the flexible connector. ### Claim 4 (depends on 3) The water heater of claim 3, further comprising a mixing valve arranged within the component space, one of an inlet and an outlet of the mixing valve communicating with a third port of the connector. ### Claim 5 (depends on 1) The water heater of claim 1, wherein each of the first and second rigid connectors comprise pipe nipples. ### Claim 6 A water heater for connection to a pipe defining a pipe axis, the water heater comprising: a tank having a tank wall defining an interior space adapted to contain water; a shroud defining a component space over the tank; a heat source operate to heat the water; and a flexible connector extending through the component space and having a first end communicating with the interior space of the tank and a second end communicating through a top end of the shroud; wherein the first end of the flexible connector defines a non-collinear axis that is non-collinear with the pipe axis and the second end of the flexible connector defines a collinear axis that is collinear with the pipe axis, wherein the water heater further comprises a torque carrier having a loadbearing surface that engages the second end of the flexible connector and prevents rotation of the second end of the flexible connector with respect to the shroud, and wherein the torque carrier is integrally formed with the shroud or is mounted to the shroud. ### Claim 7 (depends on 6) The water heater of claim 6, wherein the second end of the flexible connector comprises a hex nut and the torque carrier includes a hex socket into which the hex nut is received. ### Claim 8 (depends on 6) The water heater of claim 6, wherein the torque carrier includes a sleeve extending perpendicular to the shroud and defining the loadbearing surface. ### Claim 9 (depends on 8) The water heater of claim 8, wherein the sleeve extends into the component space. ### Claim 10 (depends on 6) The water heater of claim 6, wherein the torque carrier includes a base mounted to the shroud and a sleeve extending perpendicular to the base. ### Claim 11 A water heater for connection to a pipe defining a pipe axis, the water heater comprising: a tank having a tank wall defining an interior space adapted to contain water; a shroud defining a component space over the tank; a heat source operable to heat the water; and a flexible connector extending through the component space and having a first end communicating with the interior space of the tank and a second end communicating through a top end of the shroud; wherein the first end of the flexible connector defines a non-collinear axis that is non-collinear with the pipe axis and the second end of the flexible connector defines a collinear axis that is collinear with the pipe axis, and where the water heater further comprises a mixing valve positioned within the component space and in fluid communication with the first end of the flexible connector. ### Claim 12 (depends on 11) The water heater of claim 11, further comprising a first rigid connector in the component space, the first rigid connector being collinear with the non-collinear axis and communicating between the first end of the flexible connector and the interior space of the tank. ### Claim 13 (depends on 11) The water heater of claim 11, further comprising a torque carrier having a loadbearing surface that engages the second end of the flexible connector and prevents rotation of the second end of the flexible connector with respect to the shroud. ### Claim 14 (depends on 11) The water heater of claim 11, wherein at least a portion of the heat source is within the component space. ### Claim 15 A method of making a water heater comprising: threading a first end of a first rigid connector into a spud arranged at a top end of a tank; connecting a first end of a flexible connector to a second end of the first rigid connector; receiving a second end of the flexible connector into a torque carrier, and connecting a second rigid connector to the second end of the flexible connector, wherein connecting the second rigid connector to the second end of the flexible connector comprises applying a torque, and wherein the torque is resisted by the torque carrier. ### Claim 16 (depends on 15) The method of claim 15, further comprising fastening the torque carrier to a shroud wall of the water heater. ### Claim 17 (depends on 16) The method of claim 16, wherein fastening the torque carrier to the shroud wall is performed after receiving the second end of the flexible connector into the torque carrier. ### Claim 18 (depends on 15) The method of claim 15, further comprising connecting a mixing valve to the first rigid connector.