# US 11,304,471 B2 · Moisture controlling lattice liners for helmets and other wearable articles > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,304,471 B2 - Document ID: US11304471B2 - Status: Granted - Kind: B2 - Application number: 16/598,248 - Filed: 2019-10-10 - Published: 2020-04-16 - Granted: 2022-04-19 - Earliest claimed: 2018-10-12 - Assignees: Carbon, Inc. - Applicants: Carbon, Inc. - Inventors: Allison Light; Ananda Day; Mohamed Imran Jameel; W. Ryan Powell - Web page: https://patentgrep.com/patent/US11304471B2 ## CPC - A42B 3/10: Linings (A42B3/16 takes precedence) - A42B 3/12: Cushioning devices - A42B 3/06: Impact-absorbing shells, e.g. of crash helmets - A42B 3/124: {with at least one corrugated or ribbed layer} - B29C 64/10: Processes of additive manufacturing - B33Y 10/00: Processes of additive manufacturing - B33Y 40/20: Post-treatment, e.g. curing, coating or polishing - B29C 71/02: Thermal after-treatment {(B29C71/0063 and B29C71/0072 take precedence)} - B29C 71/04: by wave energy or particle radiation {, e.g. for curing or vulcanising preformed articles (during moulding, e.g. in a mould B29C35/08)} - B29C 2035/0855: {using microwave} - B33Y 80/00: Products made by additive manufacturing - A42B: HATS; HEAD COVERINGS (headbands A41D20/00; head-scarves A41D23/00) - 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) - 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 A helmet liner includes: (a) an open lattice body portion comprised of a polymer, the body portion having opposite face portions and a circumferential side portion; (b) a helmet contact surface portion formed on one of the face portions; and (c) a skin contact portion formed on the other of the face portions, the skin contact portion configured with the lattice body portion so air can circulate through both the body portion and the skin contact portion. ## Claims ### Claim 1 A helmet liner, comprising: (a) an open lattice body portion comprised of a polymer, said body portion having opposite face portions and a circumferential side portion; (b) a helmet contact surface portion formed on one of said face portions; and (c) a skin contact portion formed on the other of said face portions, said skin contact portion configured with said lattice body portion so air can circulate through both said body portion and said skin contact portion, wherein said lattice body portion is comprised of a plurality of interconnected struts having an average diameter of 0.3 mm to 3 mm. ### Claim 2 (depends on 1) The helmet liner of claim 1, wherein said body portion comprises a base portion and a plurality of fingers extending from said base portion, said fingers separated by gaps. ### Claim 3 (depends on 1) The helmet liner of claim 1, wherein said circumferential side portion comprises side openings adjacent the helmet contact surface portion and configured to circulate air therethrough and into said lattice body portion. ### Claim 4 (depends on 1) The helmet liner of claim 1, further comprising: (d) a breathable wicking fabric connected to said liner and overlying said skin contact portion. ### Claim 5 (depends on 1) The helmet liner of claim 1, wherein said lattice body portion is comprised of repeating tetrahedral unit cells. ### Claim 6 (depends on 1) The helmet liner of claim 1, wherein: said helmet contact surface portion is generally flat, and/or said skin contact portion is configured as a smoothed segment of said lattice body portion. ### Claim 7 (depends on 1) The helmet liner of claim 1, wherein said body portion is rigid, flexible, or elastic. ### Claim 8 (depends on 1) The helmet liner of claim 1, said liner configured to cushion a wearer from the helmet. ### Claim 9 (depends on 1) The helmet liner of claim 1, said liner configured to wick perspiration away from a wearer, and/or wick perspiration along said skin contact portion to thereby more rapidly disperse perspiration of a wearer. ### Claim 10 (depends on 1) The helmet liner of claim 1, wherein said body portion is comprised of a plurality of interconnected body members, each body member produced by the process of additive manufacturing from a light polymerizable resin. ### Claim 11 (depends on 1) The helmet liner of claim 1 produced by the process of additive manufacturing. ### Claim 12 (depends on 1) The helmet liner of claim 1 produced by the process of stereolithography from a light-polymerizable resin, optionally wherein said resin comprises a dual cure resin; and/or optionally wherein said process comprises forming said body portion or body members as at least one intermediate by additive manufacturing, optionally interconnecting said members, and then further curing said intermediate. ### Claim 13 A helmet comprising: (a) a rigid, shock-absorbing, protective shell having an interior surface and an exterior surface; and (b) a helmet liner comprising: (a′) an open lattice body portion comprised of a polymer, said body portion having opposite face portions and a circumferential side portion; (b′) a helmet contact surface portion formed on one of said face portions; and (c′) a skin contact portion formed on the other of said face portions, said skin contact portion configured with said lattice body portion so air can circulate through both said body portion and said skin contact portion, wherein said helmet contact surface portion is connected to said helmet interior surface, wherein: said body portion comprises a base portion and a plurality of fingers extending from said base portion, said fingers separated by gaps; said circumferential side portion comprises side openings configured to circulate air therethrough and into said lattice body portion; said protective shell has a plurality of vents formed therein, said vents subdividing said shell into a plurality of ribs, and said fingers of said body portion are connected or contacted to and aligned with said ribs, and at least some of said side portion openings of said liner are adjacent and/or open to said vents of said helmet; and/or said protective shell has a lower perimeter, and at least some of said side portion openings of said liner are adjacent and/or open to said lower perimeter of said helmet. ### Claim 14 (depends on 13) The helmet of claim 13, wherein said protective shell includes at least one shock-absorbing component. ### Claim 15 (depends on 13) The helmet of claim 13, wherein said protective shell comprises a crushable closed cell foam. ### Claim 16 (depends on 13) The helmet of claim 13, wherein said helmet is configured as a bicycling, skiing, motorcycling, combat, skydiving, football, baseball, lacrosse, ice hockey, construction, or horseback riding helmet. ### Claim 17 A liner for a wearable article, comprising: (a) an open lattice body portion comprised of a polymer, said body portion having opposite face portions and a circumferential side portion; (b) a garment or wearable protector contact surface portion formed on one of said face portions; and (c) a skin or body contact portion formed on the other of said face portions, said skin or body contact portion configured with said lattice body portion so air can circulate through said body portion and through said skin or body contact portion to contact the skin of a wearer, wherein said circumferential side portion comprises side openings adjacent said garment or wearable protector contact surface portion and configured to circulate air therethrough and into said lattice body portion. ### Claim 18 (depends on 17) The liner of claim 17, wherein said liner is configured for installation into or onto a wearable protective device, wherein said wearable protective device is a shin guard, knee pad, elbow pad, sports brassiere, bicycling shorts, backpack strap, backpack back, neck brace, chest protector, protective vest, protective jackets, slacks, suits, overalls, jumpsuit, and/or protective slacks. ### Claim 19 (depends on 17) The liner of claim 17, further comprising: (d) a breathable wicking fabric connected to said liner and overlying said skin or body contact portion. ### Claim 20 (depends on 17) The liner of claim 17, wherein said lattice body portion is comprised of a plurality of interconnected struts having an average diameter of 0.3 mm to 3 mm. ### Claim 21 (depends on 17) The liner of claim 17, wherein said lattice body portion is comprised of repeating tetrahedral unit cells. ### Claim 22 (depends on 17) The liner of claim 17, wherein: said garment or wearable protector contact surface portion is generally flat, and/or said skin or body contact portion is configured as a smoothed segment of said lattice body portion. ### Claim 23 (depends on 17) The liner of claim 17, wherein said body portion is rigid, flexible, or elastic. ### Claim 24 (depends on 17) The liner of claim 17, said liner configured to cushion a wearer from the garment or wearable protector contact surface portion. ### Claim 25 (depends on 17) The liner of claim 17, said liner configured to wick perspiration away from a wearer, and/or wick perspiration along said skin or body contact portion to thereby more rapidly disperse perspiration of a wearer. ### Claim 26 (depends on 17) The liner of claim 17, wherein said body portion is comprised of a plurality interconnected body members, each body member produced by the process of additive manufacturing from a light polymerizable resin. ### Claim 27 (depends on 17) The liner of claim 17 produced by the process of additive manufacturing. ### Claim 28 (depends on 17) The liner of claim 17 produced by the process of stereolithography from a light-polymerizable resin, optionally wherein said resin comprises a dual cure resin; and/or optionally wherein said process comprises forming said body portion or body members as at least one intermediate by additive manufacturing, optionally interconnecting said members, and then further curing said intermediate.