Corrective shoe sole structures using a contour greater than the theoretically ideal stability plane
First Claim
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1. A shoe construction for a shoe, comprising:
- a sole having a naturally contoured shape defined by a design which conforms to the natural shape of the unloaded foot wherein the theoretically ideal stability plane is determined by the desired shoe sole thickness and by the natural shape of a foot surface of the individual, said theoretically ideal stability plane being defined at an edge of the shoe by the desired shoe sole thickness in a frontal plane cross section, said shoe sole thickness increasing beyond the theoretically ideal stability plane to increase stability beyond its natural level.
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Abstract
A shoe having a sole contour which follows a theoretically ideal stability plane as a basic concept, but which deviates outwardly therefrom to provide greater than natural stability. Thickness variations outwardly from the stability plane are disclosed, along with density variations to achieve a similar greater than natural stability.
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Citations
20 Claims
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1. A shoe construction for a shoe, comprising:
a sole having a naturally contoured shape defined by a design which conforms to the natural shape of the unloaded foot wherein the theoretically ideal stability plane is determined by the desired shoe sole thickness and by the natural shape of a foot surface of the individual, said theoretically ideal stability plane being defined at an edge of the shoe by the desired shoe sole thickness in a frontal plane cross section, said shoe sole thickness increasing beyond the theoretically ideal stability plane to increase stability beyond its natural level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 13, 14, 16, 17, 18)
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8. The shoe sole construction as set forth in claim l wherein said shoe sole thickness increases beyond the theoretically ideal stability plans in such a manner that the thickness varies from one frontal plane cross section to another.
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15. A shoe sole construction for a shoe, comprising:
a sole having a naturally contoured shape defined by a design which conforms to the natural shape of the unloaded foot wherein the theoretically ideal stability plane is determined by the desired shoe sole thickens which is normally constant in a frontal plane cross section, said sole including a midsole having a density variation to approximate a greater than natural stability, said midsole having material of greater density nearer to the edge of the shoe sole and material of lesser density nearer to the center line of the shoe sole.
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19. A shoe construction comprising,
a shoe sole having opposed stability quadrant portions at opposed edges of said sole, said quadrants portions having an outer edge which is defined by a radius quarter than a radius defining a theoretically ideal stability plane.
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20. A shoe construction for a shoe, comprising:
a sole having a naturally contoured shape defined by a design which conforms to the natural shape of the unloaded foot wherein the theoretically ideal stability plane is determined by the desired shoe sole thickness and by the natural shape of a foot surface of the individual, said theoretically ideal stability plane being defined at an edge of the shoe by the desired shoe sole thickness in a frontal plane cross section, said shoe sole thickness decreasing from the theoretically ideal stability plane to increase foot motion beyond its natural level.
Specification