# US 8,739,827 B2 · Single-lever mixing gear for a plumbing fixture > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,739,827 B2 - Document ID: US8739827B2 - Status: Granted - Kind: B2 - Application number: 13/255,330 - Filed: 2010-03-10 - Published: 2012-01-12 - Granted: 2014-06-03 - Earliest claimed: 2009-03-10 - Assignees: CeramTec GmbH - Applicants: Josef Leinen - Inventors: Josef Leinen - Web page: https://patentgrep.com/patent/US8739827B2 ## CPC - F16K 31/605: {for single handle mixing valves} - E03C 1/04: Water-basin installations specially adapted to wash-basins or baths (valves, faucets, mixing valves, taps F16K) - E03C 1/05: Arrangements of devices on wash-basins, baths, sinks, or the like for remote control of taps (remote control of taps or the like per se F16K) - F16K 31/46: for remote operation - Y10T 137/86549: Selective reciprocation or rotation - Y10T 137/87088: Reciprocation along and rotation about same axis - Y10T 137/87692: With common valve operator - Y10T 137/87917: Flow path with serial valves and/or closures - 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 - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract Conventional single-lever plumbing fixtures include a so-called cartridge in which the cold and hot water streams fed to said plumbing fixture are discharged into sanitary equipment or are blocked and are mixed with each other. ## Claims ### Claim 1 A single-lever mixing gear for a water fitting for dispensing water in a sanitary device, wherein the water fitting comprises a fitting member which is associated with the sanitary device and which has a device for actuating the single-lever mixing gear and the single-lever mixing gear containing a hot-water supply flow and a cold-water supply flow, devices for opening and closing the supply flows and for mixing and limiting the water streams and a closable mixed water outlet which is connected to the outlet in the fitting member of the sanitary device, wherein the single-lever mixing gear and the fitting member are spatially separated from each other, wherein the single-lever mixing gear can be actuated with the device for actuating the single-lever mixing gear via a direct mechanical connection or by an electrical drive, wherein the single-lever mixing gear contains a blocking member in the hot-water supply flow and a blocking member in the cold-water supply flow as devices for opening and closing the supply flows and for mixing and limiting the water streams, wherein the water being introduced through the blocking member in the hot-water supply flow and the water being introduced through the blocking member in the cold-water supply flow can be supplied as mixed water having a temperature which is predetermined by the position of the device for actuating the single-lever mixing gear to the blocking member as a device for opening and closing and for controlling the quantity of water to be discharged from the mixed water outlet of the single-lever mixing gear, wherein the device for actuating the single-lever mixing gear is mechanically connected to the three blocking members as devices for opening and closing or acts as a control of the electromotive drives of those devices, and wherein the blocking member in the hot-water supply flow and the blocking member in the cold-water supply flow can only be actuated together for proportionally opposing control of the quantity of the-water supply flow, and wherein the blocking member for blocking and controlling the quantity in the mixed water outlet can be actuated independently of the blocking member in the hot-water supply flow and the blocking member in the cold-water supply flow. ### Claim 2 (depends on 1) A single-lever mixing gear according to claim 1, wherein the blocking members have two mutually rotatable ceramic plates which are located one on the other, a base plate and a control plate, having mutually closable openings for controlling the flow quantity and for blocking, and wherein the control plate is connected to a spindle which actuates it. ### Claim 3 (depends on 1) A single-lever mixing gear according to claim 1, wherein the blocking members are valve discs for opening, closing and controlling the hot-water supply flow and the cold-water supply flow and wherein the valve discs are connected to a spindle which actuates the valve discs. ### Claim 4 (depends on 2) A single-lever mixing gear according to claim 2, wherein a toothed wheel is connected to the spindle and wherein the toothed wheels of the blocking members are in engagement with the tooth arrangement of an actuation spindle as a device for actuating the blocking members and wherein the actuation spindle is connected to the device for actuating the single-lever mixing gear via a the pin. ### Claim 5 (depends on 4) A single-lever mixing gear according to claim 4, wherein the actuation spindle can be actuated by the device for actuating the single-lever mixing gear via a mechanical connection, in particular in the form of a connecting rod or a helix member having a flexible shaft. ### Claim 6 (depends on 4) A single-lever mixing gear according to claim 4, wherein the tooth arrangement for actuating the blocking members in the supply flows and the tooth arrangement for actuating the blocking member in the mixed water outlet of the single-lever mixing gear are arranged on the actuation spindle separately from each other. ### Claim 7 (depends on 4) A single-lever mixing gear according to claim 4, wherein the rotational movement of the device for actuating the single-lever mixing gear for adjusting the mixing temperature via the tooth arrangement of the actuation spindle in the form of a toothed wheel can be transmitted to at least one toothed wheel of a blocking member in the supply flow of the single-lever mixing gear which is in engagement with the tooth arrangement of the actuation spindle. ### Claim 8 (depends on 7) A single-lever mixing gear according to claim 7, wherein the tooth arrangement of the actuation spindle engages in the two toothed wheels for actuating the blocking members of the supply flows. ### Claim 9 (depends on 7) A single-lever mixing gear according to claim 7, wherein the two toothed wheels of the blocking members of the supply flows are in engagement and the tooth arrangement of the actuation spindle is in engagement with only one toothed wheel for actuating one of the blocking members. ### Claim 10 (depends on 4) A single-lever mixing gear according to claim 4, wherein the tooth arrangement of the actuation spindle is in engagement with the toothed wheel for actuating the valve discs and which are connected to each other via the spindle as blocking members of the supply flows. ### Claim 11 (depends on 4) A single-lever mixing gear according to claim 4, wherein the tooth arrangement of the actuation spindle is in the form of a toothed rod which is in engagement with the toothed wheel for actuating the blocking member in the mixed water outlet of the single-lever mixing gear for converting the pivot movement or lifting movement of the device for actuating the single-lever mixing gear for limiting the quantity and for turning on and shutting off the mixed water in the mixed water outlet into a rotational movement. ### Claim 12 (depends on 2) A single-lever mixing gear according to claim 2, wherein an electromotive drive which can be controlled by the device for actuating the single-lever mixing gear is connected to the spindles of the blocking members. ### Claim 13 (depends on 1) A single-lever mixing gear according to claim 1, wherein a thermal sensor for detecting the mixing water temperature is arranged in the outlet of the fitting member or in the mixed water outlet in order to control the motorized drives of the blocking members in the supply flows. ### Claim 14 (depends on 1) A single-lever mixing gear according to claim 1, wherein a mixed water chamber having an expansion member arranged therein is located in the single-lever mixing gear and wherein the expansion member is connected to the spindle which actuates the valve discs in order to keep the mixing water temperature constant by controlling the water streams in the hot-water supply flow and in the cold-water supply flow. ### Claim 15 (depends on 1) A single-lever mixing gear according to claim 1, wherein a flow quantity sensor is arranged in the outlet of the fitting member or in the mixed water outlet in order to detect the water quantity and wherein this sensor is connected to the motorized drive of the blocking member in the mixed water outlet in order to control the water quantity being discharged. ### Claim 16 (depends on 1) A single-lever mixing gear according to claim 1, wherein a non-return valve is fitted in the hot-water supply flow and in the cold-water supply flow, respectively. ### Claim 17 (depends on 16) A single-lever mixing gear according to claim 16, wherein the non-return valves can be controlled, wherein the non-return valves are closed when the device for actuating the single-lever mixing gear is in a completely closed position and therefore when a blocking member in the mixed water outlet is closed, and wherein it is possible to release the non-return valves only when the blocking member in the mixed water outlet is open. ### Claim 18 (depends on 1) A single-lever mixing gear according to claim 1, wherein the single-lever mixing gear is secured to the sanitary device or the fitting member via a connecting portion below the sanitary device. ### Claim 19 (depends on 18) A single-lever mixing gear according to claim 18, wherein the connecting portion which carries the single-lever mixing gear is secured to the base of the fitting member extending through the sanitary device. ### Claim 20 (depends on 19) A single-lever mixing gear according to claim 19, wherein the connecting portion which carries the single-lever mixing gear extends through the sanitary device and wherein the fitting member is secured to the connecting portion. ### Claim 21 (depends on 1) A single-lever mixing gear according to claim 1, wherein the single-lever mixing gear is positioned on the connections of the domestic supply system. ### Claim 22 (depends on 1) A single-lever mixing gear according to claim 1, wherein the single-lever mixing gear is arranged under plaster.