# US 2024/0200878 A1 · Attachment means and heat transfer plate > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2024/0200878 A1 - Document ID: US20240200878A1 - Status: Published application - Kind: A1 - Application number: 18/555,392 - Filed: 2022-04-19 - Published: 2024-06-20 - Earliest claimed: 2021-05-04 - Assignees: Alfa Laval Corporate AB - Applicants: Alfa Laval Corporate AB - Inventors: Jenny RASMUSSEN - Web page: https://patentgrep.com/patent/US20240200878A1 ## CPC - F28F 3/10: Arrangements for sealing the margins - F28D 9/005: {the plates having openings therein for both heat-exchange media} - F28F 3/083: {capable of being taken apart} - F28F 2230/00: Sealing means - F28F 2275/14: by using form fitting connection, e.g. with tongue and groove - F28F: DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION (water and air traps, air venting F16) - F28D: HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT (fluid heaters having heat generating means and heat transferring means F24H; furnaces F27; details of heat-exchange apparatus of general) ## Abstract To fasten a gasket to a heat transfer plate, an attachment device includes a connection member, a first finger, a second finger and a bridge. A first connection part of the connection member is arranged to engage with the gasket and a second connection part of the connection member engages with the bridge. A connection part of the first finger engages with the bridge and a connection part of the second finger engages with the bridge. The first and second fingers are arranged to extend from the bridge towards the gasket. The connection member extends between the first and second fingers. The connection member includes a first portion with a first width and a second portion with a second width. The second portion is arranged closer to the bridge than the first portion, and the second width is smaller than the first width. ## Claims ### Claim 1 An attachment device for fastening a gasket to a heat transfer plate, comprising a connection member, a first finger, a second finger and a bridge, a first connection part of the connection member being arranged to engage with the gasket, a second connection part of the connection member engaging with the bridge, a connection part of the first finger engaging with the bridge, a connection part of the second finger engaging with the bridge, the first and second fingers being arranged to extend from the bridge towards the gasket, and the connection member extending between the first and second fingers, the connection member comprising a first portion with a first width and a second portion with a second width, the second portion being arranged closer to the bridge than the first portion, and the second width being smaller than the first width. ### Claim 2 (depends on 1) An attachment device according to claim 1, wherein the second portion of the connection member is tapered in a direction towards the bridge along at least part of its length. ### Claim 3 (depends on 1) An attachment device according to claim 1, wherein the connection member further comprises a third portion with a third width, the first portion of the connection member being arranged between the second and third portions of the connection member, and the third width being smaller than the first width. ### Claim 4 (depends on 3) An attachment device according to claim 3, wherein the third portion of the connection member is tapered in a direction away from the bridge along at least a part of its length. ### Claim 5 (depends on 1) An attachment devices according to claim 1, wherein the first finger comprises a first portion with a first width and a second portion with a second width, the second portion being arranged closer to the bridge than the first portion, and the first width being smaller than the second width. ### Claim 6 (depends on 5) An attachment device according to claim 5, wherein the second portion of the first finger is tapered in a direction away from the bridge along at least part of its length. ### Claim 7 (depends on 1) An attachment devices according to claim 1, wherein an outer longitudinal side of the first finger is essentially straight and extends essentially perpendicular in relation to a length extension of the bridge. ### Claim 8 (depends on 1) An attachment device according to claim 1, wherein a thickness of the bridge is larger than a thickness of the first finger. ### Claim 9 A heat transfer plate comprising, on a first side thereof, a gasket groove extending along an edge of the heat transfer plate an edge portion of the heat transfer plate extending between the edge and the gasket groove and being corrugated so as to comprise alternately arranged ridges and valleys as seen from the first side of the heat transfer plate, the edge portion comprising a gasket fastening area arranged to engage with an attachment device for fastening a gasket in the gasket groove, the gasket fastening area comprising a first one of the valleys and first and second ones of the ridges, the first and second ridges being arranged on opposite sides of the first valley, the first valley comprising a first portion with a first width and a second portion with a second width, the second portion being arranged closer to the edge than the first portion, and the second width being smaller than the first width. ### Claim 10 (depends on 9) A heat transfer plate according to claim 9, wherein the second portion of the first valley is tapered in a direction towards the edge along at least part of its length. ### Claim 11 (depends on 9) A heat transfer plate according to claim 9, wherein the first valley further comprises a third portion with a third width, the first portion of the first valley being arranged between the second and third portions of the first valley, and the third width being smaller than the first width. ### Claim 12 (depends on 11) A heat transfer plate according to claim 11, wherein the third portion of the first valley is tapered in a direction away from the edge along at least a part of its length. ### Claim 13 (depends on 9) A heat transfer plate according to claim 9, wherein the first ridge comprises a first portion with a first width and a second portion with a second width, the second portion being arranged closer to the edge than the first portion, and the first width being smaller than the second width. ### Claim 14 (depends on 13) A heat transfer plate according to claim 13, wherein the second portion of the first ridge is tapered in a direction away from the edge along at least part of its length. ### Claim 15 (depends on 9) A heat transfer plate according to claim 9, wherein an outer longitudinal side of the first ridge is essentially straight and extends essentially perpendicular in relation to the edge of the heat transfer plate.