Invention Grant
- Patent Title: Footwear
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Application No.: US18024187Application Date: 2021-08-26
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Publication No.: US11857026B2Publication Date: 2024-01-02
- Inventor: Kiyoshi Ikura
- Applicant: Kiyoshi Ikura
- Applicant Address: JP Himeji
- Assignee: Kiyoshi Ikura
- Current Assignee: Kiyoshi Ikura
- Current Assignee Address: JP Himeji
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP 20146909 2020.09.01
- International Application: PCT/JP2021/031349 2021.08.26
- International Announcement: WO2022/050168A 2022.03.10
- Date entered country: 2023-03-01
- Main IPC: A43B13/14
- IPC: A43B13/14

Abstract:
[Problem] An object of the present invention is to provide a footwear that reduces deceleration in a traveling direction at landing on the ground and that facilitates acceleration at treading on the ground.
[Solution] The present invention provides a footwear comprising a sole having an upper surface on a side that comes in contact with a bottom of a foot and a bottom surface on a side that touches a ground, wherein in a longitudinal cross-sectional view of the sole, an angle β is an angle between a straight line L1 and a plane that the bottom surface of the sole is in contact with, and ranges from 10 degrees to 75 degrees, an angle α is an angle between a straight line L3 and the plane that the bottom surface of the sole is in contact with, and ranges from 5 degrees to 65 degrees, a contact point A is positioned closest to a toe side of points where the bottom surface of the sole is in contact with the plane, a point B is a point of the sole closest to the toe side, the straight line L1 passes through the contact point A and the point B, the line L2 passes through the contact point A and is perpendicular to the plane that the bottom surface of the sole is in contact with, and intersects with the upper surface of the sole at an intersection point C and the straight L3 passes through the intersection point C and the point B.
[Solution] The present invention provides a footwear comprising a sole having an upper surface on a side that comes in contact with a bottom of a foot and a bottom surface on a side that touches a ground, wherein in a longitudinal cross-sectional view of the sole, an angle β is an angle between a straight line L1 and a plane that the bottom surface of the sole is in contact with, and ranges from 10 degrees to 75 degrees, an angle α is an angle between a straight line L3 and the plane that the bottom surface of the sole is in contact with, and ranges from 5 degrees to 65 degrees, a contact point A is positioned closest to a toe side of points where the bottom surface of the sole is in contact with the plane, a point B is a point of the sole closest to the toe side, the straight line L1 passes through the contact point A and the point B, the line L2 passes through the contact point A and is perpendicular to the plane that the bottom surface of the sole is in contact with, and intersects with the upper surface of the sole at an intersection point C and the straight L3 passes through the intersection point C and the point B.
Public/Granted literature
- US20230284740A1 FOOTWEAR Public/Granted day:2023-09-14
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