Patent · US Expired

Midsole for shoe

US5461800A · kind A · utility

219Cited by

14References

2Claims

0Family size

Assignee

adidas AG · DE

Inventors

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

Key dates

Filing date	Jul 25, 1994
Grant date	Oct 31, 1995
Priority date	—
Expiry date	Jul 25, 2014

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 is 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.