# US 11,441,300 B2 · Drain assembly > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,441,300 B2 - Document ID: US11441300B2 - Status: Granted - Kind: B2 - Application number: 17/042,492 - Filed: 2019-03-28 - Published: 2021-01-14 - Granted: 2022-09-13 - Earliest claimed: 2018-03-29 - Assignees: Geberit International AG - Applicants: Geberit International AG - Inventors: Felix Imo Preisig; Marco Oberholzer; Michael Schintler - Web page: https://patentgrep.com/patent/US11441300B2 ## CPC - E03C 1/2304: {the actuation force being transmitted to the plug via flexible elements, e.g. chain, Bowden cable} - E03C 1/24: Overflow devices for basins or baths (E03C1/232 takes precedence) - E03C 1/232: combined with overflow devices (overflow devices for basins or baths per se E03C1/24) - 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 drain assembly for connection to a sanitary-appliance, comprising: a drain pipe having a pipe inlet and a pipe outlet and a valve arranged in a valve section of the drain pipe having a sealing face and a valve body, wherein the valve body can be moved away from the sealing face from a closed to an open position by an actuating element. Also included is an overflow pipe, which extends away from the drain tube from a first branch lying upstream of the valve seen in the direction of flow of the water to a second branch lying downstream of the valve seen in the direction of flow and thereby bridges the valve. The valve body is at least partially mounted on an insert element; the drain pipe has an insert receptacle; and the insert element can be inserted into the insert receptacle on the drain pipe. ## Claims ### Claim 1 A drain assembly for connection to a sanitary item, said drain assembly comprising: a drain pipe with a pipe inlet and a pipe outlet; a valve, which is arranged in a valve portion of the drain pipe and which valve has a sealing face and a valve body, wherein the valve body is movable away from the sealing face from a closure position to an open position by means of an actuating element; and an overflow pipe, which extends away from the drain pipe from a first branch point, which overflow pipe is arranged upstream of the valve when viewed in the direction of flow of the water, to a second branch point, which overflow pipe is arranged downstream of the valve in the direction of flow of the water, and thus bridges the valve, wherein, in the installed position, the overflow pipe extends substantially upward counter to the plumbline direction, wherein the valve body is mounted at least partially on an insert element, and wherein the drain pipe has an insert receptacle, wherein the insert element is insertable into the insert receptacle on the drain pipe, wherein the valve body is a valve flap and wherein the sealing face is provided by the drain pipe or by the insert element, and wherein the valve flap can be pivoted about a geometric pivoting axis relative to the sealing face. ### Claim 2 (depends on 1) The drain assembly as claimed in claim 1, wherein the mounting of the valve body on the insert element is such that the valve body is insertable together with the insert element into the drain pipe during an assembly process. ### Claim 3 (depends on 1) The drain assembly as claimed in claim 1, wherein the valve flap is mounted on a bearing axle, which is mounted pivotably in a bearing point on the insert element, and/or in a bearing point on the drain pipe, and wherein the bearing axle has a free end, which can be actuated by means of said actuating element. ### Claim 4 (depends on 3) The drain assembly as claimed in claim 3, wherein a seal is arranged between the bearing axle and the bearing opening; and/or wherein the free end is part of a lever arm, which projects from the bearing axle at an angle, wherein the actuating element acts on the free end; and/or wherein the free end is situated outside the drain pipe and can be actuated from outside the drain pipe. ### Claim 5 (depends on 4) The drain assembly as claimed in claim 4, wherein the said seal is arranged between the bearing axle and in the end region of the bearing opening. ### Claim 6 (depends on 4) The drain assembly as claimed in claim 4, wherein said angle is a right angle. ### Claim 7 (depends on 3) The drain assembly as claimed in claim 3, wherein the bearing point is a bearing opening. ### Claim 8 (depends on 1) The drain assembly as claimed in claim 1, wherein a return element acts on the valve body, which return element holds the valve body in the closure position thereof. ### Claim 9 (depends on 8) The drain assembly as claimed in claim 8, wherein the return element is mounted on the insert element; and/or wherein the return element is arranged outside the water-bearing region of the drain pipe. ### Claim 10 (depends on 1) The drain assembly as claimed in claim 1, wherein the insert element has a circular-cylindrical bearing portion, and wherein the insert receptacle has a circular-cylindrical bearing receptacle portion, and wherein a seal element is arranged between the bearing portion and the bearing receptacle portion. ### Claim 11 (depends on 10) The drain assembly as claimed in claim 10, wherein an orientation structure is arranged between the insert element and the insert receptacle, which structure aligns the insert element in the insert receptacle relative to the sealing face, or which structure aligns the insert element, with the valve body mounted on the insert element, relative to said sealing face. ### Claim 12 (depends on 1) The drain assembly as claimed in claim 1, wherein the insert element has a retaining element, which secures the insert element with respect to the drain pipe after the insertion of the insert element into the insert receptacle. ### Claim 13 (depends on 12) The drain assembly as claimed in claim 12, wherein the retaining element is a cap, which is mounted rotatably on the insert element and which has a thread, which interacts with a thread of corresponding design on the drain pipe; or wherein the retaining element is formed integrally on the insert element and, for example, has the form of a bayonet catch. ### Claim 14 (depends on 1) The drain assembly as claimed in claim 1, wherein the actuating element is arranged outside the water-bearing region of the drain pipe; and/or wherein the actuating element is mounted on the insert element. ### Claim 15 (depends on 1) The drain assembly as claimed in claim 1, wherein the insert receptacle opens into the drain pipe between the first branch point and the second branch point. ### Claim 16 (depends on 15) The drain assembly as claimed in claim 15, wherein the insert receptacle is oriented in such a way that the insert element can be inserted into the insert receptacle in the direction of an insertion direction transverse to the sealing face. ### Claim 17 (depends on 1) The drain assembly as claimed in claim 1, wherein the insert receptacle opens into the drain pipe between the second branch point and the pipe outlet. ### Claim 18 (depends on 1) The drain assembly as claimed in claim 1, wherein the insert receptacle is oriented in such a way that the insert element can be inserted into the insert receptacle in the direction of an insertion direction at right angles to the sealing face. ### Claim 19 (depends on 1) The drain assembly as claimed in claim 1, wherein the valve body is mounted opposite a bearing point of the insert element, at a bearing point which is arranged on the drain pipe. ### Claim 20 (depends on 1) The drain assembly as claimed in claim 1, wherein the actuating element is a Bowden cable with a sheath and a cable supported therein, which cable acts on the valve body, wherein the sheath is mounted on the insert element. ### Claim 21 (depends on 20) The drain assembly as claimed in claim 20, wherein the insert element and/or the insert receptacle have/has a notch for the passage of the Bowden cable. ### Claim 22 (depends on 1) The drain assembly as claimed in claim 1, wherein, in the installed position, the valve portion extends in such a way that the direction of flow runs substantially in the horizontal or at an angle of no more than 20° to the horizontal, and wherein, in the installed position, the sealing face is oriented substantially in the vertical or at an angle of no more than 20° to the vertical. ### Claim 23 A drain assembly for connection to a sanitary item, said drain assembly comprising: a drain pipe with a pipe inlet and a pipe outlet; a valve, which is arranged in a valve portion of the drain pipe and which valve has a sealing face and a valve body, wherein the valve body is movable away from the sealing face from a closure position to an open position by means of an actuating element; and an overflow pipe, which extends away from the drain pipe from a first branch point, which overflow pipe is arranged upstream of the valve when viewed in the direction of flow of the water, to a second branch point, which overflow pipe is arranged downstream of the valve in the direction of flow of the water, and thus bridges the valve, wherein, in the installed position, the overflow pipe extends substantially upward counter to the plumbline direction, wherein the valve body is mounted at least partially on an insert element, and wherein the drain pipe has an insert receptacle, wherein the insert element can be inserted into the insert receptacle on the drain pipe, wherein, in the installed position, the valve portion extends in such a way that the direction of flow runs substantially in the horizontal or at an angle of no more than 20° to the horizontal, and wherein, in the installed position, the sealing face is oriented substantially in the vertical or at an angle of no more than 20° to the vertical. ### Claim 24 (depends on 23) The drain assembly as claimed in claim 23, wherein the mounting of the valve body on the insert element is such that the valve body is insertable together with the insert element into the drain pipe during an assembly process. ### Claim 25 (depends on 23) The drain assembly as claimed in claim 23, wherein the valve body is a valve flap and wherein the sealing face is provided by the drain pipe or by the insert element, and wherein the valve flap can be pivoted about a geometric pivoting axis relative to the sealing face. ### Claim 26 (depends on 23) The drain assembly as claimed in claim 23, wherein the valve flap is mounted on a bearing axle, which is mounted pivotably in a bearing point on the insert element, and/or in a bearing point on the drain pipe, and wherein the bearing axle has a free end, which can be actuated by means of said actuating element. ### Claim 27 (depends on 26) The drain assembly as claimed in claim 26, wherein a seal is arranged between the bearing axle and the bearing opening; and/or wherein the free end is part of a lever arm, which projects from the bearing axle at an angle, wherein the actuating element acts on the free end; and/or wherein the free end is situated outside the drain pipe and can be actuated from outside the drain pipe. ### Claim 28 (depends on 27) The drain assembly as claimed in claim 27, wherein the said seal is arranged between the bearing axle and in the end region of the bearing opening. ### Claim 29 (depends on 27) The drain assembly as claimed in claim 27, wherein said angle is a right angle. ### Claim 30 (depends on 26) The drain assembly as claimed in claim 26, wherein the bearing point is a bearing opening. ### Claim 31 (depends on 23) The drain assembly as claimed in claim 23, wherein a return element acts on the valve body, which return element holds the valve body in the closure position thereof. ### Claim 32 (depends on 31) The drain assembly as claimed in claim 31, wherein the return element is mounted on the insert element; and/or wherein the return element is arranged outside the water-bearing region of the drain pipe. ### Claim 33 (depends on 23) The drain assembly as claimed in claim 23, wherein the insert element has a circular-cylindrical bearing portion, and wherein the insert receptacle has a circular-cylindrical bearing receptacle portion, and wherein a seal element is arranged between the bearing portion and the bearing receptacle portion. ### Claim 34 (depends on 33) The drain assembly as claimed in claim 33, wherein an orientation structure is arranged between the insert element and the insert receptacle, which structure aligns the insert element in the insert receptacle relative to the sealing face, or which structure aligns the insert element, with the valve body mounted on the insert element, relative to said sealing face. ### Claim 35 (depends on 23) The drain assembly as claimed in claim 23, wherein the insert element has a retaining element, which secures the insert element with respect to the drain pipe after the insertion of the insert element into the insert receptacle. ### Claim 36 (depends on 35) The drain assembly as claimed in claim 35, wherein the retaining element is a cap, which is mounted rotatably on the insert element and which has a thread, which interacts with a thread of corresponding design on the drain pipe; or wherein the retaining element is formed integrally on the insert element and, for example, has the form of a bayonet catch. ### Claim 37 (depends on 23) The drain assembly as claimed in claim 23, wherein the actuating element is arranged outside the water-bearing region of the drain pipe; and/or wherein the actuating element is mounted on the insert element. ### Claim 38 (depends on 23) The drain assembly as claimed in claim 23, wherein the insert receptacle opens into the drain pipe between the first branch point and the second branch point. ### Claim 39 (depends on 38) The drain assembly as claimed in claim 38, wherein the insert receptacle is oriented in such a way that the insert element can be inserted into the insert receptacle in the direction of an insertion direction transverse to the sealing face. ### Claim 40 (depends on 23) The drain assembly as claimed in claim 23, wherein the insert receptacle opens into the drain pipe between the second branch point and the pipe outlet. ### Claim 41 (depends on 23) The drain assembly as claimed in claim 23, wherein the insert receptacle is oriented in such a way that the insert element can be inserted into the insert receptacle in the direction of an insertion direction at right angles to the sealing face. ### Claim 42 (depends on 23) The drain assembly as claimed in claim 23, wherein the valve body is mounted opposite a bearing point of the insert element, at a bearing point which is arranged on the drain pipe. ### Claim 43 (depends on 23) The drain assembly as claimed in claim 23, wherein the actuating element is a Bowden cable with a sheath and a cable supported therein, which cable acts on the valve body, wherein the sheath is mounted on the insert element. ### Claim 44 (depends on 43) The drain assembly as claimed in claim 43, wherein the insert element and/or the insert receptacle have/has a notch for the passage of the Bowden cable. ### Claim 45 (depends on 23) The drain assembly as claimed in claim 23, wherein, in the installed position, the valve portion extends in such a way that the direction of flow runs substantially in the horizontal or at an angle of no more than 20° to the horizontal, and wherein, in the installed position, the sealing face is oriented substantially in the vertical or at an angle of no more than 20° to the vertical.