# US 2021/0274890 A1 · A last device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0274890 A1 - Document ID: US20210274890A1 - Status: Published application - Kind: A1 - Application number: 17/259,848 - Filed: 2019-06-21 - Published: 2021-09-09 - Earliest claimed: 2018-07-13 - Assignees: C. & J. Clark Overseas Limited - Applicants: C. & J. Clark Overseas Limited - Inventors: Antony PERILLO; Benjamin QUARTLY - Web page: https://patentgrep.com/patent/US20210274890A1 ## CPC - A43D 3/04: Pneumatic lasts; Elastic lasts - A43D 3/02: Lasts for making or repairing shoes (making of wooden lasts B27M3/20) - B33Y 80/00: Products made by additive manufacturing - A43D: MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR - B33Y: ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING ## Abstract Last devices and methods for forming an article of footwear are disclosed. The last device comprises a last body having a surface for receiving material for the article of footwear and at least two sets of fluid conduits extending separately within the last body and opening to the surface of the last body. The at least two sets of separate fluid conduits are provided to subject the material on the last body to at least two different types of treatment. The last body can be produced by means of additive manufacturing. ## Claims ### Claim 1 A last device for forming an article of footwear, comprising: a last body having a surface for receiving material for the article of footwear and at least two sets of separate fluid conduits extending separately within the last body and opening to the surface of the last body, wherein the at least two sets of separate fluid conduits are configured to apply at least two different treatments simultaneously to the material on the last body. ### Claim 2 (canceled) ### Claim 3 (depends on 1) The last device according to claim 1, wherein the least two sets of separate fluid conduits are connected to generators of different treatment effects. ### Claim 4 (depends on 3) The last device according to claim 3, wherein the treatments comprise treatment by at least two of pressure, vacuum, hot air, cold air, steam, moist, fluidized powder, and a chemical composition. ### Claim 5 (depends on 3) The last device according to claim 3, wherein at least one of the generators comprises a pump, a compressor, a steam generator, an air or water cooling unit, an air or water heating unit or a reservoir for chemical composition. ### Claim 6 (depends on 1) The last device according to claim 1, comprising a treatment application control arrangement configured for separate control of application of treatments through the at least two sets of fluid conduits. ### Claim 7 (depends on 1) The last device according to claim 1, wherein at least a part of the fluid conduits are produced in the last body by additive manufacturing. ### Claim 8 (depends on 7) The last device according to claim 7, wherein the last body comprises at least one part of 3D printed material comprising at least one fluid conduit. ### Claim 9 (depends on 1) The last device according to claim 1, wherein the last body is separable into at least two parts and at least one of the fluid conduits extends from one part of the last body to another part of the last body. ### Claim 10 (depends on 9) The last device according to claim 9, comprising a sealing arrangement between the at least two parts. ### Claim 11 A last device for forming an article of footwear, comprising: a last body having a surface for receiving material for the article of footwear and at least two sets of fluid conduits extending separately within the last body and opening to the surface of the last body, wherein the at least two sets of separate fluid conduits are provided to subject the material on the last body to at least two different treatments and wherein one set of the fluid conduits opens in a first localized area on the surface of the last body and another set of the fluid conduits opens in another localized area on the surface of the last body, the localized areas providing different types of treatment of the material on the surface. ### Claim 12 (depends on 11) The last device according to claim 11, wherein two adjacent openings are configured to provide simultaneously two different types of treatment in a localized area. ### Claim 13 (depends on 1) The last device according to claim 1, comprising at least one fluid conduit opening towards the side of the last body facing a sole section of the article of footwear. ### Claim 14 A method for forming in manufacture of an article of footwear, the method comprising: placing material for the article of footwear on a surface of a last body comprising at least two sets of separate fluid conduits extending separately within the last body and opening to the surface of the last body; applying via a first set of the separate fluid conduits a first type of treatment to the material on the surface of the last body; and applying simultaneously via a second set of the separate fluid conduits a second type of treatment to the material on the surface of the last body. ### Claim 15 (canceled) ### Claim 16 (depends on 14) The method according to claim 14, comprising producing the least two different types of treatments by generators of different treatment effects. ### Claim 17 (depends on 14) The method according to claim 14, comprising applying at least two of pressure, vacuum, hot air, cold air, steam, fluidized powder, and a chemical composition to the material. ### Claim 18 (depends on 14) The method according to claim 14, comprising causing localized treatment of the material through the at least two separate fluid conduits opening to the surface of the last body. ### Claim 19 (depends on 14) The method according to claim 14, comprising applying solvent on the material on the last body via at least one of the fluid conduits. ### Claim 20 (depends on 14) The method according to claim 14, comprising applying treatment to the material via fluid conduits produced by means of additive manufacturing. ### Claim 21 (depends on 14) The method according to claim 14, comprising placing the last body within a piece of material for the article of footwear such that the last body is substantially encompassed by the material. ### Claim 22 (depends on 14) The method according to claim 14, comprising separating the last body into at least two parts, inserting the at least two parts one by one within material for the article of footwear, and joining the at least two parts so that at least one of the fluid conduits extends from one part of the last body to another part of the last body. ### Claim 23 (depends on 14) The method according to claim 14, comprising providing a different treatment of the material on different areas of the surface of the last body by applying the first type of treatment by one set of fluid conduits opening in a first area on the surface of the last body and applying a second type of treatment by another set of fluid conduits opening in another area on the surface of the last body. ### Claim 24 (depends on 14) The method according to claim 14, comprising applying at least a type of treatment to the material that has been placed on the last body on the sole facing side of an upper component of the article of footwear by at least one fluid conduit opening. ### Claim 25 A method for manufacturing a last device for use in forming an article of footwear, the method comprising producing by additive manufacturing a last body comprising a surface for receiving material for the article of footwear and at least two sets of fluid conduits extending within the last body and opening to the surface of the last body, the process comprising forming the at least two sets of fluid conduits as separated flow systems for facilitating simultaneous application of at least two different types of treatment to the material on the surface of the last body. ### Claim 26 (depends on 25) The method according to claim 25, comprising 3D printing at least a part of a last body comprising a complex pattern of fluid conduits. ### Claim 27 An article of footwear manufactured according to a method for forming an article of footwear using a last device comprising a last body having a surface for receiving material for the article of footwear and at least two sets of fluid conduits extending separately within the last body and opening to the surface of the last body, wherein a first type of treatment and second type of treatment have been applied simultaneously to the material on the surface of the last body via a first set of the fluid conduits and a second set of the fluid conduits.