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Patents
Four U.S. Patents. One Performance-Driven Technology.
Springbak® Springsoles were developed through a family of four U.S. patents covering performance-enhancing athletic shoe components and methods.
The technology described in these patents centers on specialized, resilient footwear components designed to return energy during athletic movement. The patented concepts include applications for shoe inserts, insoles, midsoles, sole components, and performance materials integrated directly into athletic footwear.
Innovation built from the ground up—and designed to perform beneath your feet.
From Patent to Performance
These four U.S. patents represent years of research, development, formulation and athletic testing devoted to one central idea: improving the way footwear responds to an athlete’s movement.
Springbak® transformed that innovation into an ultra-thin Springsoles design that fits beneath the existing insole of athletic footwear. This allows athletes to experience Springbak® technology without replacing their favorite shoes or changing the way those shoes are intended to fit.
Whether the movement involves running, jumping, cutting, lifting, rotating or changing direction, Springbak® begins where athletic performance begins—at the point where the athlete meets the ground.
U.S. Patent No. 6,589,630 B1
Advanced Performance-Enhancing Shoe Technology
This patent expanded the Springbak® technology through resilient and layered shoe-component constructions. The disclosed applications include materials positioned within shoe inserts, insoles, midsoles, and other parts of athletic footwear.
Technology for Energy Return, Strength, Balance and Athletic Movement
U.S. Patent No. 6,120,880
Continued Development of Springbak® Technology
This patent continued the development of performance-enhancing athletic shoe components and methods, building upon the earlier Springbak® patent family and expanding the potential use of resilient performance materials within footwear.
Technology for Speed, Jumping and Explosive Movement
U.S. Patent No. 5,695,850
Energy-Returning Athletic Shoe Components
This patent further developed athletic-footwear components using high-cis 1,4-polybutadiene combined with resilient rubber materials. The technology was designed for placement between the athlete’s foot and the shoe sole, including insole, midsole and shoe-insert applications.
Technology for Energy Return and Athletic Performance
U.S. Patent No. 5,554,694
The Foundation of Springbak® Technology
Issued to inventor William R. Crow, this patent established the original performance-enhancing athletic shoe component technology that became the foundation of Springbak® Springsoles.
The patent describes specialized 1,4-polybutadiene and rubber compositions designed to provide resilience and energy return in lightweight footwear components.
The Original Springbak® Performance Innovation
