Upper structure and shoe including upper structure
AssigneeMizuno Corporation
InventorsKazunori Iuchi, Takao Oda, Chie Yamamoto, Satoshi Kishimoto
Life of this patent
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Abstract
An upper structure includes: an upper body including a stress relaxing portion which is elastically deformable; and a shoelace (a fastening member) attached to the upper body. The stress relaxing portion has: such stretchability that in an elastic range, the stress relaxing portion stretches to become longer when the upper body is pulled with the shoelace than an initial length of the stress relaxing portion; and stress relaxation properties with which the stress relaxing portion relaxes stress with the passage of time from a moment when the upper body is pulled, while remaining in the stretched state.
Claims8
An upper structure for a shoe, the upper structure comprising:
- an upper body including a stress relaxing portion which is elastically deformable;
- and
- a fastening member attached to the upper body, and configured to keep the upper body fitted to a foot of a wearer when the upper body is in a pulled state in which the upper body is pulled with the fastening member, wherein
- in an elastic range, the stress relaxing portion is configured to enter, when the upper body is in the pulled state, a stretched state in which the stress relaxing portion is stretched to become longer than an initial length thereof, and to relax stress with passage of time from a moment at which the upper body enters the pulled state, while remaining in the stretched state.
Dependencies are inferred from the claim text.