Patent · US Expired

Midsole for shoe

US5822886A · kind A · utility

168Cited by

16References

39Claims

0Family size

Assignee

Adidas International, Inc. · NL

Inventors

Simon Luthi · Lake Oswego, US
Xavier Kalin · Lake Oswego, US
Wolfgang Scholz · Minden, DE
Edgar Stussi · Schlieren, CH

Key dates

Filing date	Oct 25, 1995
Grant date	Oct 20, 1998
Priority date	—
Expiry date	Oct 25, 2015

Classification

Technology area (CPC A)Human Necessities
CPC primaryA43B13/181
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

An integrally molded midsole for an athletic shoe having tubular suspension members disclosed. The tubular suspension members behave as springs and have spring constants which may be designed for a particular application by choice of the tube length, the tube wall thickness or the hardness of the tube material. Preferably, the midsole is made of an elastomer such as HYTREL that is cast in a preformed shape and thereafter subjected to substantial compressive forces so that the tubular springs take a compression set and thereafter perform as near-ideal springs.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.