U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Reduced torsion resistance athletic shoe sole

Patent 4689901 Issued on September 1, 1987. Estimated Expiration Date: Icon_subject October 19, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

1422716

1876195

3466763

3707047

3739497

Golf shoe
Patent #: 4167071
Issued on: 09/11/1979
Inventor: Koransky

Outer sole structure for athletic shoe
Patent #: 4327503
Issued on: 05/04/1982
Inventor: Johnson

Athletic shoe
Patent #: 4347674
Issued on: 09/07/1982
Inventor: George

Athletic shoe with improved pivot cleating
Patent #: 4577422
Issued on: 03/25/1986
Inventor: Tanel

Forefoot compensated footwear Patent #: 4578882
Issued on: 04/01/1986
Inventor: Talarico, II

Inventor

Application

No. 06/662894 filed on 10/19/1984

US Classes:

36/126, For baseball36/114, Athletic shoe or attachment therefor36/59CModified tread surface

Examiners

Primary: Marcus, Stephen
Assistant: Graveline, T.

Attorney, Agent or Firm

International Classes

A43B 13/14 (20060101)
A43B 13/22 (20060101)
A43B 5/00 (20060101)

Abstract

A shoe sole for enhanced turning traction and release characteristics with an instep and an out step and further having a toe section and a heel section, the toe section bearing from two to a plurality of downwardly asymmetrically extending vacuum limiting traction arrays. Toe traction arrays are of generally circular basis, generally concentric with a point in a vertical axis with the balance point of the shoe sole and with the asymmetric extension from a plane comprising the shoe sole affording greater angle to the instep than the out step. This differential of angle allows improved turning characteristics with less turning strain for the wearer. In a further aspect of the invention, the heel section of the shoe bears vacuum limiting traction arrays to enhance the traction characteristics of the shoe when the shoe sole is applied generally flush with the traction surface.

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