# US 2014/0150293 A1 · Mine resistant combat boot, blast mitigating > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0150293 A1 - Document ID: US20140150293A1 - Status: Published application - Kind: A1 - Application number: 13/918,420 - Filed: 2013-06-14 - Published: 2014-06-05 - Earliest claimed: 2011-06-17 - Inventors: DAVID J. MILLAR - Web page: https://patentgrep.com/patent/US20140150293A1 ## CPC - F41H 1/00: Personal protection gear (shields for personal use F41H5/08; {footwear for use in minefields A43B3/0026}; for protection against chemical warfare A62B) - A43B 3/0026: {for use in minefields; protecting from landmine blast; preventing landmines from being triggered} - A43B 7/32: with shock-absorbing means (resilient soles A43B13/18) - A43B 13/026: {Composites, e.g. carbon fibre or aramid fibre; the sole, one or more sole layers or sole part being made of a composite} - A43B 13/127: {the midsole being multilayer} - A43B 13/141: {with a part of the sole being flexible, e.g. permitting articulation or torsion} - F41H: ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL - A43B: CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR ## Abstract A blast deflecting boot has a V like shaped sole, a layer to reduce and to stop high velocity fragments, a padded core that limits the blast forces transmitted to the lower leg of a soldier, and an upper of high velocity blast fragment reducing fabric. The invention provides the sole within a layer of non-slip urethane that contains energy absorbing foam, a layer of high velocity fragment reducing para-aramid or ultra-high molecular weight polyethylene UHMWPE fabric, and a core of closed cell single or multiple density high energy absorbing foam or silicone that absorbs impact forces. The insole has a high velocity fragment reducing layer system of multiple layers of UHMWPE, or para-aramid. The sole of the present invention may have a unitary form or be assembled from multiple sections. ## Claims ### Claim 1 A device to reduce lower leg injuries of a soldier wearing said device on a foot of the soldier, said device comprising: an upper; a sole joining to said upper, said sole having a generally V shaped cross section, a vertex of said sole opposite said upper, a length, and a plurality of cleats opposite said upper; and, a coating upon said sole, said coating partially covering said sole including said cleats. ### Claim 2 (depends on 1) The lower leg injury reducing device of claim 1 further comprising: said sole having an insole of a cushioning layer spaced away from said cleats and opposite said vertex and a high velocity fragment reducing layer beneath said cushioning layer. ### Claim 3 (depends on 2) The lower leg injury reducing device of claim 2 further comprising: said sole having a core positioned within said V shaped cross section and beneath said high velocity fragment reducing layer; and, said core being one of expanded polypropylene and expanded polyethylene. ### Claim 4 (depends on 2) The lower leg injury reducing device of claim 2 wherein said cushioning layer is one of expanded polypropylene and expanded polyethylene, and said high velocity fragment reducing layer is one of ultra high molecular weight polyethylene and para-aramid. ### Claim 5 (depends on 4) The lower leg injury reducing device of claim 4 wherein said high velocity fragment reducing layer is woven in one of a unidirectional manner and a non directional manner ### Claim 6 (depends on 2) The lower leg injury reducing device of claim 2 further comprising: said V shaped cross section attaining an angle φ to a horizontal plane parallel to said high velocity fragment reducing layer having the range of about 20° to about 60°. ### Claim 7 (depends on 6) The lower leg injury reducing device of claim 6 wherein said angle φ is 45°. ### Claim 8 (depends on 3) The lower leg injury reducing device of claim 3 further comprising: said sole having a keel including said vertex, said keel having a spacing slightly above said cleats, and said keel extends for at least a portion of said length of said sole. ### Claim 9 (depends on 3) The lower leg injury reducing device of claim 3 further comprising: said sole having a keel including said vertex, said keel having a spacing slightly above said cleats; and, a flexure zone interrupting said keel and said core, said flexure zone allowing bending of said sole during usage. ### Claim 10 (depends on 3) The lower leg injury reducing device of claim 3 further comprising: said sole being formed in temperatures from about 185° F. to about 225° F. and under pressure from about 1850 psi to about 4300 psi. ### Claim 11 (depends on 3) The lower leg injury reducing device of claim 3 wherein said cushioning layer and said core each have a density from about 20 g/I to about 200 g/I. ### Claim 12 (depends on 11) The impact lower leg injury reducing device of claim 11 further comprising: said coating elongating proportionally to said core; said coating including a Part A, a Part B, and, a Part C; wherein Part A is 1,1′-methylenebis (4-isocyanatocyclohexane) and 2-n-Octyl-4-isothianzolin-3-one; wherein Part B is at least one zinc compound and n-butyl acetate; and. wherein Part C is a catalyst, said catalyst including one of at least one acrylic polymer, at least one residual monomer, and water. ### Claim 13 (depends on 12) The injury reducing formulation of claim 12 further comprising: about 2 to about 3 parts Part A; about 0.5 to about 1.5 parts Part B; and, about 0.5 to about 1.5 parts Part C. ### Claim 14 (depends on 8) The lower leg injury reducing device of claim 8 wherein said coating applies traction additive upon said cleats, said keel, and said V shaped cross section. ### Claim 15 A device worn on the foot of a soldier to reduce lower leg injuries of the soldier, the device having an upper, and the device comprising: a sole having a generally V shaped cross section including a vertex, a core positioning interiorly of said sole, a plurality of cleats upon said sole outwardly from said core, an insole of a cushioning layer spaced away from said cleats and opposite said vertex and a high velocity fragment reducing layer beneath said cushioning layer and above said core, a length of said sole, and a keel including said vertex, said keel having a spacing slightly above said cleats, and said keel extends for at least a portion of said length of said sole; a coating upon said sole, said coating partially covering said sole including said cleats; wherein said V shaped cross section attains an angle cp to a horizontal plane parallel to said high velocity fragment reducing layer having the range of about 20° to about 60°. ### Claim 16 (depends on 15) The lower leg injury reducing device of claim 15 further comprising: said cushioning layer being one of expanded polypropylene and expanded polyethylene; said high velocity fragment reducing layer being one of ultra high molecular weight polyethylene and para-aramid and said high velocity fragment reducing layer being woven in one of a unidirectional manner and a non directional manner; said core being one of expanded polypropylene and expanded polyethylene; and, said coating elongating proportionally to said core. ### Claim 17 (depends on 16) The lower leg injury reducing device of claim 16 further comprising: said coating including about 2 to about 3 parts Part A; about 0.5 to about 1.5 parts Part B; about 0.5 to about 1.5 parts Part C; wherein Part A is 1,1′-methylenebis (4-isocyanatocyclohexane) and 2-n-Octyl-4-isothianzolin-3-one; wherein Part B is at least one zinc compound and n-butyl acetate; and. wherein Part C is a catalyst, said catalyst including one of at least one acrylic polymer, at least one residual monomer, and water. ### Claim 18 (depends on 16) The lower leg injury reducing device of claim 16 further comprising: said sole being formed in temperatures from about 185° F. to about 225° F. and under pressure from about 1850 psi to about 4300 psi. ### Claim 19 A device to reduce lower leg injuries of people wearing the device, the device having an upper, the device comprising: an energy absorbing core having a V like shape, said core being elongated and prismatic; a sole outwardly of said core, said sole having a vertex, a keel including said vertex and extending for at least a portion of said sole, an insole of a high velocity fragment reducing layer upon said core spaced away from said keel and said vertex and a cushioning layer outwardly from said high velocity fragment reducing layer and opposite said vertex, a plurality of cleats upon said sole outwardly from said high velocity fragment reducing layer, said cleats extending downwardly beyond said keel; said vertex having an internal angle cp of the range of about 20° to about 60°; a coating upon said sole including said cleats and said keel, and said coating elongating proportionally to said sole and said core; said coating including about 2 to about 3 parts Part A; about 0.5 to about 1.5 parts Part B; about 0.5 to about 1.5 parts Part C; wherein Part A is 1,1′-methylenebis (4-isocyanatocyclohexane) and 2-n-Octyl-4-isothianzolin-3-one; wherein Part B is at least one zinc compound and n-butyl acetate; wherein Part C is a catalyst, said catalyst including one of at least one acrylic polymer, at least one residual monomer, and water; and, wherein said device is formed in temperatures from about 185° F. to about 225° F. and under pressure from about 1850 psi to about 4300 psi. ### Claim 20 (depends on 19) The lower leg injury reducing device of claim 19 further comprising: said internal angle φ being 45°; said core being one of expanded polypropylene and expanded polyethylene; said cushioning layer being one of expanded polypropylene and expanded polyethylene; said high velocity fragment reducing layer being one of ultra high molecular weight polyethylene and para-aramid; said coating having traction additive; and, said sole having a flexure zone interrupting said keel and said core wherein said flexure zone bends said sole during usage.