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.
Patent No.:
Date of Patent:
Dec. 06, 2011
Filed:
Nov. 20, 2008
Applicants:
Scott M. Purrington, Grant, MN (US);
Frank Roppolo, Bridgewater, MA (US);
Inventors:
Scott M. Purrington, Grant, MN (US);
Frank Roppolo, Bridgewater, MA (US);
Assignee:
3M Innovative Properties Company, St. Paul, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A43B 13/38 (2006.01);
U.S. Cl.
CPC ...
Abstract
A shoe footbedmade by first molding a shape-retaining layerinto a contoured condition. After the shape-retaining layerhas been molded, a layer of thermal insulationis placed on top of the molded layer. A conforming layerand a fabric top layermay be placed over the thermal insulationand the shape-retaining layer. The inventive method of manufacture is particularly suited for making insulated footbeds that contain nonwoven webs of polymeric microfiber because damage to the fibrous web from heat and compression may be avoided.