Inner sole for foot wear
OwnerRoy J. Powerinventor
Life of this patent
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Abstract
A protective inner sole having a laminated, two layer foam construction is provided. The lower or base layer comprises an elastomeric foam having high resilience and elasticity and the top or face layer is less resilient and less elastic. The thickness of the base layer is substantially greater than that of the face layer.
Claims5
An inner sole for foot wear which comprises a base layer and an upper layer adhesively joined to form a laminate, each of said layers comprising a foamed elastomeric rubber, said base layer having a compression deflection in the range of 5 to 9 psi, a minimum elongation of 200% and a resilience as measured by the Bayshore Rebound method of at least 50% and said upper layer having a minimum elongation of 100% and a resilience as measured by the Bayshore Rebound method of less than 30%;
- the resiliency and thickness of said upper layer being selected to prevent the laminate from bottoming out during use and the base layer being substantially thicker than the upper layer.
Dependencies are inferred from the claim text.