Footwear sole with forefoot stabilizer, ribbed shank, and layered heel cushioning
View Patent ↗A footwear sole includes a footwear sole base with a forefoot region, a mid-foot region, and a heel region. A lower heel cushion is positioned in the heel region. An upper heel cushion is positioned over the lower heel cushion. A shank with reinforcement ribs is positioned in the mid-foot region. A forefoot stabilizer is positioned in the forefoot region. The forefoot stabilizer includes an axial spine and lateral ribs to facilitate forward movement and lateral support. The footwear sole may be used in combination with a foot bed with a flexible base and a rigid orthotic structure. The foot bed may include elastomer cushioning domes at heel and metatarsal impact points. The foot bed may include a liner with moisture wicking and anti-microbe properties.
1. A footwear sole, comprising:
a footwear sole base with a forefoot region with a forefoot stabilizer receptacle, a mid-foot region with a shank receptacle, and a heel region;
a lower heel cushion positioned in said heel region;
an upper heel cushion positioned over said lower heel cushion;
a shank with axially aligned reinforcement ribs in said mid-foot region, said reinforcement ribs extending through apertures formed in said shank receptacle; and
a forefoot stabilizer positioned in said forefoot stabilizer receptacle, said forefoot stabilizer including an axial spine and lateral ribs to facilitate forward movement and lateral support.
2. The footwear sole of claim 1 , wherein said heel region includes a translucent window.
3. The footwear sole of claim 2 , wherein said translucent window is treated to retard yellowing.
4. The footwear sole of claim 1 wherein said lower heel cushion is formed of die cut rubber.
5. The footwear sole of claim 4 wherein said lower heel cushion is a combination of ethyl-vinyl acetate and blown rubber.
6. The footwear sole of claim 4 wherein said lower heel includes a cross-hatched grid adjacent to said translucent window.
7. The footwear sole of claim 1 wherein said upper heel cushion includes a gel.
8. The footwear sole of claim 7 wherein said upper heel cushion includes a thermo plastic rubber gel encapsulated in thermal polyurethane.
9. The footwear sole of claim 7 wherein said upper heel cushion has a cross-hatched grid.
10. The footwear sole of claim 1 wherein said shank is formed of a composite material.
11. The footwear sole of claim 10 wherein said shank is formed of thermal polyurethane through an injection molding process.
12. The footwear sole of claim 1 wherein said forefoot stabilizer is formed of nylon.
13. The footwear sole of claim 1 in combination with a foot bed.
14. The footwear sole and foot bed combination of claim 13 wherein said foot bed includes a flexible structural base and a rigid orthotic structure.
15. The footwear sole and foot bed combination of claim 13 wherein said foot bed includes elastomer cushioning domes.
16. The footwear sole and foot bed combination of claim 15 wherein said elastomer cushioning domes are positioned at heel and metatarsal impact points.
17. The footwear sole and foot bed combination of claim 13 wherein said foot bed includes a foot bed liner with moisture wicking and anti-microbe properties.