Compact no-turn athletic equine boot, laminate and method
View Patent ↗A laminate comprising a tough, flexible, hard layer and a cushion layer for uses such as in making a compact, athletic equine boot that resists turning on the animal's hoof when the animal such as a horse is jumping, running and turning in water, mud, sand and sawdust comprising a bell portion having a cushiony layer on the interior of a relatively rigid or hard shell, an internal compressible protrusion, a fastener to secure the boot on the hoof, the hard shell being flexible and strong to resist blows from over-reaching rear hooves. The invention also includes a method of making the laminate comprising a layer of a tough, flexible, strong material and a cushiony layer.
1. A laminate comprising a relatively rigid, molded layer of a hard, tough and somewhat flexible material selected from a group consisting of polyurethanes, polyester type polyurethanes, epoxies, fluoropolymers, polyamides, polycarbonates, polyesters, polyethylene, polyolefins, polypropylene, polyvinyl chlorides, silicones, styrene acrylonitriles, other thermoplastic elastomers, and organic materials including rubber and leathers including cowhide and leathers having similar properties, attached to a cushion layer, the hard, tough and flexible layer having a Shore A hardness in the range of about 80 to about 93, a tear strength of at least about 50 N/mm, and the thickness of the hard, tough and flexible layer being at least 1.5+/−0.65 mm and varying in thickness in an amount in the range of about plus 1 mm to about plus 11 mm, the cushion layer comprising a layer of compressible foamed material and a layer of soft fabric.
2. The laminate of claim 1 wherein the layer of tough, flexible and hard material is a polyester type polyurethane having a Shore A hardness of about 85+/−5, a density in the range of about 1.22 to about 1.24 g/cubic mm, and an elongation at break of at least about 600 percent.
3. The laminate of claim 2 wherein the laminate further comprises a layer of film or dense fabric on an exposed surface opposite the soft fabric layer.
4. The laminate of claim 2 wherein the tear strength of the tough, flexible and hard material is at least about 70 N/mm.
5. The laminate of claim 2 wherein the Shore hardness of the tough, flexible and hard material is in the range of about 80 to about 90.
6. The laminate of claim 2 wherein the tough, flexible and hard material has a Shore hardness of about 85+/−4 and the tear strength is at least about 60 N/mm.
7. The laminate of claim 1 wherein the laminate further comprises a layer of film or dense fabric on an exposed surface opposite the soft fabric layer.
8. The laminate of claim 7 wherein the tear strength of the tough, flexible and hard material is at least about 70 N/mm.
9. The laminate of claim 7 wherein the Shore hardness of the tough, flexible and hard material is in the range of about 80 to about 90.
10. The laminate of claim 7 wherein the tough, flexible and hard material has a Shore hardness of about 85+/−4 and the tear strength is at least about 60 N/mm.
11. The laminate of claim 1 wherein the tear strength of the tough, flexible and hard material is at least about 70 N/mm.
12. The laminate of claim 1 wherein the Shore hardness of the tough, flexible and hard material is in the range of about 80 to about 90.
13. The laminate of claim 1 wherein the tough, flexible and hard material has a Shore hardness of about 85+/−4 and the tear strength is at least about 60 N/mm.
14. A method of making a laminate comprising attaching a relatively rigid, molded layer of a hard, tough and somewhat flexible material selected from a group consisting of polyurethanes, polyester type polyurethanes, epoxies, fluoropolymers, polyamides, polycarbonates, polyesters, polyethylene, polyolefins, polypropylene, polyvinyl chlorides, silicones, styrene acrylonitriles, other thermoplastic elastomers, and organic materials including rubber and leathers including cowhide and leathers having similar properties, to a cushion layer, the hard, tough and flexible layer having a Shore A hardness in the range of about 80 to about 93, a tear strength of at least about 50 N/mm, and a thickness of at least 1.5+/−0.65 mm and varying in thickness in an amount in the range of about plus 1 to about plus 11 mm, the cushion layer comprising a layer of a compressible foamed material.
15. The method of claim 14 wherein the layers are attached using an adhesive, stitching or both.
16. The method of claim 15 further comprising the step of attaching a layer of soft fabric to the exposed surface of the foamed material.
17. The method of claim 14 further comprising the step of attaching a layer of soft fabric to the exposed surface of the foamed material.
18. The method of claim 14 wherein the tear strength of the tough, flexible and hard material is at least about 70 N/mm.
19. The method of claim 14 wherein the Shore hardness of the tough, flexible and hard material is in the range of about 80 to about 90.
20. The method of claim 14 wherein the tough, flexible and hard material has a Shore hardness of about 85+/−4 and the tear strength is at least about 60 N/mm.