The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
May. 07, 2013

Filed:

Jan. 09, 2009
Applicants:

Paul E. Litchfield, Westborough, MA (US);

Matthew J. Montross, Quincy, MA (US);

Steven F. Smith, Taunton, MA (US);

J. Spencer White, N. Easton, MA (US);

Alexander W. Jessiman, Scituate, MA (US);

Inventors:

Paul E. Litchfield, Westborough, MA (US);

Matthew J. Montross, Quincy, MA (US);

Steven F. Smith, Taunton, MA (US);

J. Spencer White, N. Easton, MA (US);

Alexander W. Jessiman, Scituate, MA (US);

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A43B 5/00 (2006.01); A43B 13/18 (2006.01);
U.S. Cl.
CPC ...
Abstract

A cushioning member for an article of footwear. The cushioning member is a flexible bladder having a fluidly interconnected heel chamber and forefoot chamber. The bladder is disposed above the sole and beneath the wearer's foot to provided added cushioning to the wearer. The bladder contains air at slightly above ambient pressure and can be formed by thermoforming or by welding two sheets of resilient, flexible material together. A connecting passage fluidly connects the heel chamber and the forefoot chamber. The connecting passage is narrow to control the flow of air between the two chambers.


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