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US 6,314,664 B1Granted
Athletic shoe midsole design and construction
AssigneeMizuno Corporation
InventorsKenjiro Kita, Takaya Kimura, Yasunori Kaneko
Life of this patent
Estimating the term…
Abstract
A midsole assembly for an athletic shoe includes a midsole formed of soft elastic material, and a corrugated sheet disposed in at least a heel portion of the midsole. The amplitude of the wave configuration of the corrugated sheet is larger at the medial and lateral sides of the heel portion and smaller at the central portion between the medial and lateral sides. Alternatively, the wave phase of the corrugated sheet is offset by one half of a wave pitch between the medial and lateral sides.
Claims13
A midsole assembly for an athletic shoe comprising:
- a midsole that is formed of a soft elastic material, and that includes a midsole heel portion, which comprises an upper midsole part and a lower midsole part, and which is bounded by a midsole heel lateral side and a midsole heel medial side and has a midsole heel central portion between said lateral and medial sides;
- and
- a corrugated sheet that has a wave configuration including wave crests and wave troughs, and that is disposed in at least said midsole heel portion of said midsole between said upper midsole part and said lower midsole part;
- wherein said wave configuration of said corrugated sheet has a varied amplitude of said wave crests and said wave troughs which includes a respective relatively larger amplitude at said lateral and medial sides and a relatively smaller amplitude at said central portion, and which amplitude varies smoothly and progressively between said relatively larger amplitude and said relatively smaller amplitude.
1 more element
A midsole assembly for an athletic shoe comprising:
- a midsole that is formed of a soft elastic material, and that includes a midsole heel portion, which comprises an upper midsole part and a lower midsole part, and which is bounded by a midsole heel lateral side and a midsole heel medial side;
- and
- a corrugated sheet that has a wave configuration including wave crests and wave troughs with a wave pitch defined by a cycle of a respective one of said wave crests and a respective one of said wave troughs, and that is disposed in at least said midsole heel portion of said midsole between said upper midsole part and said lower midsole part;
- wherein said wave configuration has a first wave phase of said wave crests and said wave troughs at said medial side and a second wave phase of said wave crests and said wave troughs at said lateral side, wherein said first wave phase and said second wave phase are offset from each other by one half of said wave pitch.
1 more element
Dependencies are inferred from the claim text.