# US 2014/0196801 A1 · Multifunctional restrictive valve > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0196801 A1 - Document ID: US20140196801A1 - Status: Published application - Kind: A1 - Application number: 13/857,705 - Filed: 2013-04-05 - Published: 2014-07-17 - Earliest claimed: 2005-06-15 - Assignees: ShowerStart, LLC - Inventors: Michael Brown; John Lockhart; Jeffrey S. Doss - Web page: https://patentgrep.com/patent/US20140196801A1 ## CPC - F16K 31/002: {actuated by temperature variation (thermo-electric F16K31/025)} - E03C 1/04: Water-basin installations specially adapted to wash-basins or baths (valves, faucets, mixing valves, taps F16K) - E03C 1/0408: {Water installations especially for showers (E03C1/06 takes precedence; shower heads B05B1/18)} - E03C 1/044: having a heating or cooling apparatus in the supply line (water heaters, e.g. with continuous flow, F24H) - F16K 1/123: {with stationary valve member and moving sleeve} - F16K 3/24: with cylindrical valve members - G05D 23/022: {the sensing element being placed within a regulating fluid flow} - E03C 2001/0418: {having temperature indicating means} - Y02A 20/40: Protecting water resources - Y10T 137/7737: Thermal responsive - F16K: VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING {(devices for emptying and evacuating the excess liquid in valves or conduits F16L55/07)} - E03C: DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER (not connected to either water-supply main or to waste pipe A47K; devices of the kind used in the ground E03B, E03F); SINKS - G05D: SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES - Y02A: TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A multifunctional restrictive valve for controlling the flow of water therethrough. The valve has a main body with a flow channel through the main body. The main body receives water upstream thereof through an inlet port and passes it out through an outlet port at the downstream end of the body. A flow control assembly is located in the flow channel and includes a temperature sensor/actuator acting on a piston to move, when the temperature sensor heats up the piston, to block water flow control ports. The flow control assembly also includes an override feature wherein the piston is located within a slide and the flow control ports are located in the slide. By moving the slide away from the piston when the piston is blocking the flow control ports, the temperature sensor and piston may be overridden and flow may resume through the main body. ## Claims ### Claim 1 A valve for controlling the flow of water therethrough, the valve comprising: a main body including a channel therethrough, the channel including channel walls, the main body for receiving water at an inlet port and passing water through an outlet port; and a flow control assembly in operative engagement with the main body, the flow control assembly including a temperature sensor and piston assembly, the temperature sensor and piston assembly including a temperature sensor and a piston, the temperature sensor engaged with the channel walls of the main body, the temperature sensor and piston assembly adapted to substantially block and unblock the flow of water in the channel responsive to the temperature sensor, the flow control assembly further including an override assembly movable between a first and a second position, the second position for enabling the temperature sensor and piston assembly to control the flow of water through the main body, the first position for bypassing the temperature sensor and piston assembly and allowing water to flow, the override assembly further including means to set the override assembly in the second position; wherein the override assembly includes a handle to release the override assembly from the second position; wherein the means to set the override assembly includes means to automatically set the override assembly to the second position; wherein the means to automatically set the override assembly to the second position is responsive to a substantial change in the hydraulic pressure at the inlet port; wherein the override assembly and the means to set includes a slide, movable with respect to the channel walls and with respect to the piston, the slide including slide ports therethrough, the slide ports for passing water between the inlet and the outlet ports the temperature sensor and piston assembly adapted to move the piston to a slide port blocking position when the temperature sensor expands in response to the water temperature exceeding the predetermined temperature and the override assembly in the second position; and wherein the slide is adapted to move between the second position wherein the piston is capable of blocking the slide ports and the first position, wherein the piston is no longer capable of blocking the slide ports. ### Claim 2 (canceled) ### Claim 3 (canceled) ### Claim 4 (canceled) ### Claim 5 (canceled) ### Claim 6 (canceled) ### Claim 7 (depends on 1) The valve of claim 1, wherein the slide includes a slide spring engaging the slide and the channel walls, the slide spring for urging the slide towards the inlet port, and the piston includes a piston spring engaging the piston and the channel walls for urging the piston against the temperature sensor. ### Claim 8 (depends on 1) The valve of claim 1, wherein the slide spring is adapted to allow the slide to move in response to a change in hydraulic pressure. ### Claim 9 (depends on 1) The valve of claim 1, wherein the override assembly is adapted to respond to hydraulic pressure at the inlet port, moving between the first and second positions responsive to changes thereof. ### Claim 10 (canceled) ### Claim 11 (canceled) ### Claim 12 (canceled) ### Claim 13 (canceled) ### Claim 14 (canceled) ### Claim 15 (canceled) ### Claim 16 (canceled) ### Claim 17 (canceled) ### Claim 18 (canceled)