# US 10,119,259 B2 · Flow diverter with antisiphon > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,119,259 B2 - Document ID: US10119259B2 - Status: Granted - Kind: B2 - Application number: 15/426,222 - Filed: 2017-02-07 - Published: 2017-06-01 - Granted: 2018-11-06 - Earliest claimed: 2015-03-12 - Assignees: Fluidmaster, Inc. - Applicants: Fluidmaster, Inc. - Inventors: Tuan Le - Web page: https://patentgrep.com/patent/US10119259B2 ## CPC - E03D 1/32: Arrangement of inlet valves (devices for reducing noise E03D9/14 {; noise-reducing means E03D11/00}) - B67D 7/48: by making use of air suction through an opening closed by the rising liquid - E03D 1/20: Cisterns with tiltably-mounted containers {(for operation, e.g. by the seat E03D5/04)} - E03D 1/302: {with valves kept in open position by means of air or water pressure or by vacuum} - E03D 3/06: with diaphragm valve and pressure chamber for retarding the valve-closing movement - E03D 5/024: {Operated hydraulically or pneumatically} - E03D 5/094: the flushing element, e.g. siphon bell, being actuated through a cable, chain or the like - F16K 1/12: with streamlined valve member around which the fluid flows when the valve is opened - F16K 1/123: {with stationary valve member and moving sleeve} - F16K 7/12: with flat, dished, or bowl-shaped diaphragm - F16K 11/0856: {having all the connecting conduits situated in more than one plane perpendicular to the axis of the plug} - F16K 21/20: by means making use of air-suction through an opening closed by the rising liquid - F16K 31/1266: {one side of the diaphragm being acted upon by the circulating fluid} - F16K 31/1268: {with a plurality of the diaphragms} - F16K 31/145: the fluid acting on a diaphragm - F16K 31/365: the fluid acting on a diaphragm - E03C 1/023: {with flow distribution, e.g. diverters} - E03C 2001/026: {with flow restricting devices} - E03D: WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR - B67D: DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR (cleaning pipes or tubes or systems of pipes or tubes B08B9/02; emptying or filling of bottles, jars, cans, casks, barrels, or similar containers, not otherwise provided for B67C; water supply E03; pipe systems F17D; domestic hot-water supply systems F24D; measuring volume, volume flow, mass flow or liquid level, metering by volume G01F; coin-freed or like apparatus G07F) - 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 ## Abstract A flow diverter for diverting flow between a toilet bowl and a toilet tank, having: a body having an inlet, a first outlet and a second outlet; and a flow adjustment mechanism rotatable within the body to selectively divert different percentages of flow between the first outlet and the second outlet; and an air vent and diaphragm in the body to prevent a siphon flow from the first or second outlet back to the inlet. ## Claims ### Claim 1 A flow diverter for diverting flow between a toilet bowl and a toilet tank, comprising: a body having an inlet, an outlet and a pressure relief vent between the inlet and the outlet; and a flow adjustment mechanism to selectively divert different percentages of flow between the outlet and the pressure relief vent, wherein a siphon force applied to the outlet draws air into the pressure relief vent. ### Claim 2 A flow diverter for diverting flow between a toilet bowl and a toilet tank, comprising: a body having an inlet, an outlet and a pressure relief vent between the inlet and the outlet; and a flow adjustment mechanism to selectively divert different percentages of flow between the outlet and the pressure relief vent, wherein the flow adjustment mechanism is rotatable around the outlet of the body and comprises: a sleeve received over the outlet, the sleeve having a threaded inner surface that mates with a threaded outer surface of the outlet; and a stopper that is slidably received into the outlet. ### Claim 3 (depends on 2) The flow diverter of claim 2, wherein the stopper is moved axially in the outlet as the sleeve is rotated around the outlet to continuously adjust the size of a fluid path through the outlet. ### Claim 4 (depends on 1) The flow diverter of claim 1, wherein the body is curved such that flow into the inlet is not co-axial with flow out of the outlet. ### Claim 5 (depends on 1) The flow diverter of claim 1, wherein flow into the inlet is in a direction parallel to flow out of the outlet. ### Claim 6 (depends on 1) The flow diverter of claim 1, wherein flow from the outlet is diverted to the toilet bowl and flow out of the pressure relief vent is diverted to the toilet tank. ### Claim 7 (depends on 1) The flow diverter of claim 1, wherein flow from the outlet is diverted to the toilet tank and flow out of the pressure relief vent is diverted to the toilet bowl. ### Claim 8 A flow diverter for diverting flow between a toilet bowl and a toilet tank, comprising: a body having an inlet, a first outlet and a second outlet; and a flow adjustment mechanism rotatable within the body to selectively divert different percentages of flow between the first outlet and the second outlet, wherein the body has a cylindrical section, and wherein the flow adjustment mechanism comprises a curved rotatable wall portion that can be rotated in the cylindrical section to block flow into either the first outlet or the second outlet, wherein the rotatable wall has a C-shaped or W-shaped cross section that extends at least approximately one quarter of the way around the cylindrical section. ### Claim 9 (depends on 8) The flow diverter of claim 8, wherein the first outlet diverts flow to a toilet bowl, and a second outlet diverts flow to a toilet tank. ### Claim 10 (depends on 8) The flow diverter of claim 8, wherein the C-shaped cross section extends half way around the cylindrical section of the body. ### Claim 11 (depends on 8) The flow diverter of claim 8, further comprising a detent feature to selectively adjust the position of the curved rotatable wall within the cylindrical section. ### Claim 12 (depends on 8) The flow diverter of claim 8, wherein the body further comprises an overflow tube clasp for mounting the body onto an overflow tube such that flow from the first outlet is directed into a mouth of the overflow tube, and flow from the second outlet is directed into away from the mouth of the overflow tube and into a toilet tank. ### Claim 13 (depends on 8) The flow diverter of claim 8, wherein flow from the second outlet is directed back into the fill valve. ### Claim 14 A flow diverter for diverting flow between a toilet bowl and a toilet tank, comprising: a body having an inlet, a first outlet and a second outlet; and a flow adjustment mechanism rotatable within the body to selectively divert different percentages of flow between the first outlet and the second outlet; and an air vent and diaphragm in the body to prevent a siphon flow from the first or second outlet back to the inlet. ### Claim 15 (depends on 14) The flow diverter of claim 14, wherein the first outlet diverts flow to a toilet bowl, and a second outlet diverts flow to a toilet tank. ### Claim 16 (depends on 14) The flow diverter of claim 14, wherein the body has a cylindrical section, and wherein the flow adjustment mechanism comprises a curved rotatable wall portion that can be rotated in the cylindrical section to block flow into either the first outlet or the second outlet. ### Claim 17 (depends on 16) The flow diverter of claim 16, wherein flow from the second outlet is directed back into the fill valve. ### Claim 18 (depends on 14) The flow diverter of claim 14, wherein flow from the second outlet is directed back into the fill valve. ### Claim 19 (depends on 14) The flow diverter of claim 14, wherein the diaphragm in the body is positioned near the top of the body of the flow diverter. ### Claim 20 (depends on 14) The flow diverter of claim 14, wherein the diaphragm in the body is positioned above the inlet, first outlet and second outlet of the flow diverter. ### Claim 21 (depends on 14) The flow diverter of claim 14, wherein the diaphragm in the body is positioned under a top cap of the body. ### Claim 22 (depends on 14) The flow diverter of claim 14, wherein the diaphragm extends around the circumference of the body.