# US 11,112,031 B2 · Diaphragm assembly for a diaphragm valve, and diaphragm valve > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,112,031 B2 - Document ID: US11112031B2 - Status: Granted - Kind: B2 - Application number: 16/202,221 - Filed: 2018-11-28 - Published: 2019-05-30 - Granted: 2021-09-07 - Earliest claimed: 2017-11-29 - Assignees: Buerkert Werke GmbH - Applicants: Buerkert Werke GmbH & Co. KG - Inventors: Dieter Binz; Gertrud Eppler; Daniel Trenkamp - Web page: https://patentgrep.com/patent/US11112031B2 ## CPC - F16K 41/103: {the diaphragm and the closure member being integrated in one member} - F16K 7/12: with flat, dished, or bowl-shaped diaphragm - F16K 7/14: arranged to be deformed against a flat seat - F16K 31/0672: {the valve member being a diaphragm} - F16K 31/1266: {one side of the diaphragm being acted upon by the circulating fluid} - F16K 31/365: the fluid acting on a diaphragm - F16K 37/00: Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given - F16K 51/00: Other details not peculiar to particular types of valves or cut-off apparatus - G06K 19/07758: {arrangements for adhering the record carrier to further objects or living beings, functioning as an identification tag} - Y10T 137/8158: With indicator, register, recorder, alarm or inspection means - Y10T 137/8275: Indicator element rigidly carried by the movable element whose position is indicated - 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)} - G06K: GRAPHICAL DATA READING (image or video recognition or understanding G06V); PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A diaphragm assembly for a diaphragm valve is described, which has a diaphragm which includes a functional portion adapted to cooperate with further components of the diaphragm valve and to separate opposite chambers. The diaphragm further includes a tab projecting laterally from the functional portion and having a through-opening provided therein. A marking element is fastened in the through-opening. In addition, a diaphragm valve having such a diaphragm assembly is presented. ## Claims ### Claim 1 A diaphragm assembly for a diaphragm valve, comprising: a diaphragm which includes a functional portion adapted to cooperate with further components of the diaphragm valve and to separate opposite chambers; and a tab projecting laterally from the functional portion, wherein a through-opening is provided in the tab, and a marking element is fastened in the through-opening; wherein the diaphragm is a multilayer diaphragm, and the through-opening extends through all layers of the multilayer diaphragm; wherein in an installed position, the diaphragm comprises an upper side and a lower side; and the marking element has substantially the same color as the lower side, the color being an indicator for the material on the lower side, or the marking element is made from the same material as the lower side, or the marking element has a shape being an indicator for the material on the lower side. ### Claim 2 (depends on 1) The diaphragm assembly according to claim 1, wherein the marking element is visible from a viewing direction directed onto the upper side. ### Claim 3 (depends on 1) The diaphragm assembly according to claim 1, wherein the marking element protrudes in relation to at least one of an upper boundary surface and to a lower boundary surface of the diaphragm. ### Claim 4 (depends on 1) The diaphragm assembly according to claim 1, wherein the marking element includes at least one lateral extension for retaining the marking element in the through-opening. ### Claim 5 (depends on 4) The diaphragm assembly according to claim 4, wherein the marking element includes two lateral extensions for retaining the marking element in the through-opening, the lateral extensions being arranged on opposite sides of the diaphragm in the assembled state. ### Claim 6 (depends on 4) The diaphragm assembly according to claim 4, wherein the marking element includes a lateral extension on each of the two axial ends for retaining the marking element in the through-opening, and wherein an axial end face of each extension facing the middle portion rests against the diaphragm. ### Claim 7 (depends on 1) The diaphragm assembly according to claim 1, wherein the marking element is substantially cylindrical and the through-opening has a cross-section substantially corresponding to a cross-section of the marking element. ### Claim 8 (depends on 7) The diaphragm assembly according to claim 7, wherein a circumference of the cylindrical marking element is larger than a circumference of the through-opening such that the marking element and the through-opening form an interference fit. ### Claim 9 (depends on 1) The diaphragm assembly according to claim 1, wherein the marking element comprises an electronic data storage element, in particular an RFID chip. ### Claim 10 (depends on 9) The diaphragm assembly according to claim 9, wherein the marking element comprises a data readout interface for reading out data stored on the electronic data storage element and/or a data write interface for writing data to the electronic data storage element. ### Claim 11 (depends on 9) The diaphragm assembly according to claim 9, wherein a visual display device is provided, which is coupled to the electronic data storage element. ### Claim 12 (depends on 11) The diaphragm assembly according to claim 11, wherein the visual display device is an indicator light. ### Claim 13 A diaphragm valve comprising a diaphragm assembly for a diaphragm valve, comprising a diaphragm which includes a functional portion adapted to cooperate with further components of the diaphragm valve and to separate opposite chambers, and a tab projecting laterally from the functional portion, wherein a through-opening is provided in the tab, and a marking element is fastened in the through-opening; wherein the diaphragm is a multilayer diaphragm, and the through-opening extends through all layers of the multilayer diaphragm; wherein in an installed position, the diaphragm comprises an upper side and a lower side; and the marking element has substantially the same color as the lower side, the color being an indicator for the material on the lower side, or the marking element is made from the same material as the lower side, or the marking element has a shape being an indicator for the material on the lower side. ### Claim 14 A diaphragm assembly for a diaphragm valve, comprising: a diaphragm which includes a functional portion adapted to cooperate with further components of the diaphragm valve and to separate opposite chambers; and a tab projecting laterally from the functional portion, wherein a through-opening is provided in the tab, and a marking element is fastened in the through-opening; wherein the diaphragm is a multilayer diaphragm, wherein a first diaphragm layer is an elastomer layer and a second diaphragm layer is made of PTFE; wherein in an installed position, the diaphragm comprises an upper side and a lower side; and the marking element has substantially the same color as the lower side, the color being an indicator for the material on the lower side, or the marking element is made from the same material as the lower side, or the marking element has a shape being an indicator for the material on the lower side. ### Claim 15 A diaphragm valve comprising a diaphragm assembly for a diaphragm valve, comprising a diaphragm which includes a functional portion adapted to cooperate with further components of the diaphragm valve and to separate opposite chambers, and a tab projecting laterally from the functional portion, wherein a through-opening is provided in the tab, and a marking element is fastened in the through-opening; wherein the diaphragm is a multilayer diaphragm, wherein a first diaphragm layer is an elastomer layer and a second diaphragm layer is made of PTFE; wherein in an installed position, the diaphragm comprises an upper side and a lower side; and the marking element has substantially the same color as the lower side, the color being an indicator for the material on the lower side, or the marking element is made from the same material as the lower side, or the marking element has a shape being an indicator for the material on the lower side.