# US 8,465,654 B2 · Filter candle and mesh pack with a deformable seal, and method of filtering molten or dissolved polymers > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,465,654 B2 - Document ID: US8465654B2 - Status: Granted - Kind: B2 - Application number: 12/919,066 - Filed: 2009-02-02 - Published: 2011-01-13 - Granted: 2013-06-18 - Earliest claimed: 2008-03-07 - Assignees: Bekaert Advanced Filtration - Applicants: Philippe Leonard; Stefan Vandendijk - Inventors: Philippe Leonard; Stefan Vandendijk - Web page: https://patentgrep.com/patent/US8465654B2 ## CPC - B01D 29/15: arranged for inward flow filtration - B01D 2201/34: Seals or gaskets for filtering elements - B29C 48/03: characterised by the shape of the extruded material at extrusion - B29C 48/694: Cylindrical or conical filters - B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28) - B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00) ## Abstract An elongate mesh pack for filtering a fluid defines a mesh pack axial opening. The mesh pack comprises a filter medium for filtration of the fluid and has an end fitting securely fixed to the filter medium, the end fitting providing a first extremity of the mesh pack. The end fitting has an inner surface defining an end fitting opening through the end fitting, the end fitting opening being co-axial with the axial opening of the mesh pack. The end fitting comprises an annular recess encompassing the end fitting opening. A partition wall suitable to deform towards the recess under radial force is provided between the recess and the end fitting opening, the partition wall forming at least part of the inner surface. ## Claims ### Claim 1 An elongate mesh pack for filtering a fluid, comprising: an elongated cylindrical mesh filter medium for filtration of the fluid, an end of which defines an axial opening; and an end fitting being securely fixed to the filter medium, providing a first extremity of the mesh pack, and having an inner surface defining an end fitting opening through the end fitting, said end fitting opening being co-axial with the axial opening of the mesh pack, the end fitting comprising an annular recess encompassing the end fitting opening, wherein an axially extending partition wall made of a material capable of deforming towards the recess under radial force, is provided between the recess and the end fitting opening, the partition wall defining at least part of the inner surface; wherein said partition wall deforms against a beveled extremity outer surface of a core tube when such a core tube is slidably moved into said axial opening of the elongate mesh pack, thereby fluidically sealing the end fitting to the core tube. ### Claim 2 (depends on 1) The elongate mesh pack according to claim 1, wherein the partition wall has a uniform thickness. ### Claim 3 (depends on 1) The elongate mesh pack according to claim 1, wherein the partition wall has a thickness varying along said axially extending direction. ### Claim 4 (depends on 3) The elongate mesh pack according to claim 3, wherein the partition wall comprises at least a first annular zone and a second annular zone, the thickness (Tp2) of the first annular zone being less than the thickness (Tp1) of the second annular zone. ### Claim 5 (depends on 1) The elongate mesh pack according to claim 1, wherein the inner surface of the end fitting is substantially cylindrical. ### Claim 6 (depends on 1) The elongate mesh pack according to claim 1, wherein the inner surface of the end fitting is substantially conical. ### Claim 7 A filter candle for filtering a fluid, the filter candle comprising: an elongated cylindrical mesh filter medium for filtration of the fluid, an end of which defines an axial opening; an end fitting being securely fixed to the filter medium, providing a first extremity of the mesh pack, and having an inner surface defining an end fitting opening through the end fitting, said end fitting opening being co-axial with the axial opening of the mesh pack, the end fitting comprising an annular recess encompassing the end fitting opening, wherein an axially extending partition wall made of a material capable of deforming towards the recess under radial force, is provided between the recess and the end fitting opening, the partition wall defining at least part of the inner surface; a hollow core tube having a fluid permeable wall and an axial opening, the core tube being removably slidable through the mesh pack axial opening; the core tube having a first outer extremity having an extremity outer surface having a maximum diameter (Dmax), and the at least part of an inner surface of the end fitting defined by the partition wall having a minimum diameter (Dmin) less than the maximum diameter (Dmax) of the extremity outer surface; wherein said partition wall deforms against a beveled extremity outer surface of a core tube when said core tube is slidably moved into said axial opening of the elongate mesh pack, thereby fluidically sealing the end fitting to the core tube. ### Claim 8 (depends on 7) The filter candle according to claim 7, wherein the core tube has an end flange fixed to the extremity outer surface. ### Claim 9 (depends on 1, 7) A method of filtering comprising the steps of: providing an elongate mesh pack as recited in claim 1 or a filter candle as recited in claim 7; and passing a molten or dissolved polymer through said mesh pack or said filter candle to remove impurities from said polymer.