Midsole Structure for a Shoe

Patent metadata

Field	Value
Publication number	US-2019289961-A1
Application number	US-201916286892-A
Country	US
Kind code	A1
Filing date	Feb 27, 2019
Priority date	Mar 22, 2018
Publication date	Sep 26, 2019
Grant date	—

Abstract

A midsole structure of a shoe includes an upper midsole, a lower midsole disposed below the upper midsole, and a wavy sheet interposed between the upper midsole and the lower midsole. The wavy sheet has a wavy shape at its medial and lateral side edge portions and a planar area at its central portion. The lower surface of the upper midsole and the upper surface of the lower midsole have wavy shapes that correspond to the wavy shape of the wavy sheet at their medial and lateral side edge portions and have a planar area that corresponds to the planar area of the wavy sheet at their central portions. The lower surface of the upper midsole and the upper surface of the lower midsole have a plurality of recesses that are disposed in the longitudinal direction at their central portions.

First claim

What is claimed is:

1 . A midsole structure for a shoe comprising:
an upper midsole disposed on an upper side of a heel region that corresponds to a heel portion of a foot of a shoe wearer; a lower midsole disposed below said upper midsole; and a wavy sheet interposed between said upper midsole and said lower midsole, wherein said wavy sheet has a wavy shape at least either one of a sheet medial side portion or a sheet lateral side portion and a planar shape at a sheet central portion, wherein a lower surface of said upper midsole and an upper surface of said lower midsole have a wavy shape that corresponds to said wavy shape of said wavy sheet at least either at a sole medial side portion or at a sole lateral side portion, said lower surface of said upper midsole and said upper surface of said lower midsole have a planar shape that corresponds to said planar shape of said wavy sheet at a sole central portion, and at least either said lower surface of said upper midsole or said upper surface of said lower midsole has a plurality of recesses disposed along a substantially longitudinal direction at said sole central portion.

2 . The midsole structure according to claim 1 , wherein at least either said lower surface of said upper midsole or said upper surface of said lower midsole has a wavy shape formed of said plurality of recesses at said sole central portion.

3 . The midsole structure according to claim 1 , wherein either said lower surface of said upper midsole or said upper surface of said lower midsole has a wavy shape formed of said plurality of recesses at said sole central portion.

4 . The midsole structure according to claim 1 , wherein both said lower surface of said upper midsole and said upper surface of said lower midsole have a wavy shape formed of said plurality of recesses at said sole central portion.

5 . The midsole structure according to claim 4 , wherein said plurality of recesses of said lower surface of said upper midsole at said sole central portion and said plurality of recesses of said upper surface of said lower midsole at said sole central portion are aligned with each other in an upper and lower direction.

6 . The midsole structure according to claim 4 , wherein said plurality of recesses of said lower surface of said upper midsole at said sole central portion and said plurality of recesses of said upper surface of said lower midsole at said sole central portion are not aligned with each other in an upper and lower direction and deviated in the longitudinal direction, a wavy shape being formed by said plurality of recesses of both said upper midsole and said lower midsole.

7 . The midsole structure according to claim 1 , wherein a bottom portion of said plurality of recesses of at least either said lower surface of said upper midsole or said upper surface of said lower midsole has a trough line that extends in a substantially lateral direction.

8 . The midsole structure according to claim 7 , wherein said trough line of said plurality of recesses is inclined relative to the lateral direction.

9 . The midsole structure according to claim 1 , wherein said wavy sheet has an opening portion formed thereinto at said sheet central portion.

Assignees

• Mizuno Kk

Inventors

• Iuchi Kazunori
• Hirai Shin
• Oda Takao

Classifications

• A43B13/187

  Resiliency achieved by the features of the material, e.g. foam, non liquid materials · CPC title

• A43B13/185

  Elasticated plates sandwiched between two interlocking components, e.g. thrustors · CPC title

• A43B13/188

  Differential cushioning regions · CPC title

• A43B13/223

  Profiled soles · CPC title

• A43B13/127

  the midsole being multilayer · CPC title