Spring-action running and jumping shoe

US4534124A · kind A · utility

Inventor

• Joachim Schnell · Bad Boll, DE

Key dates

• Filing date: Sep 12, 1983
• Grant date: Aug 13, 1985
• Expiry date: Sep 12, 2003

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A63B25/10
• WIPO field: Other consumer goods
• WIPO sector: Other fields

Abstract

An athletic shoe, particularly for running and jumping, including an upper sole, a separate lower sole beneath the upper sole and a leaf spring of approximately the width of the shoe connecting the upper and lower soles. One end of the leaf spring is fastened to one end of the upper sole, such as the front end, while the other end of the leaf spring is fastened to the opposite end of the lower sole. The opposite surfaces of the upper and lower soles facing the spring may be arcuately curved. The spring may be arcuately curved. The upper sole may be fastened to the shoe over the entire length of the upper sole or only at the front of the shoe, e.g. at a joint. Additional springs may be disposed between the upper and lower soles.