Fluid-filled chamber with a tensile element

Patent metadata

Field	Value
Publication number	US-9603415-B2
Application number	US-201514713157-A
Country	US
Kind code	B2
Filing date	May 15, 2015
Priority date	Mar 15, 2013
Publication date	Mar 28, 2017
Grant date	Mar 28, 2017

Abstract

A fluid-filled chamber, which may be incorporated into articles of footwear and other products, may include an outer barrier and a tensile element. The outer barrier may have a first portion, an opposite second portion, and an interior surface defining an interior void. The tensile element may be secured to the first portion of the outer barrier in a plurality of first bond areas and may be secured to the second portion of the outer barrier in a plurality of second bond areas. Each of the bond areas may be connected to portions of the tensile element spaced from the interior surface.

First claim

What is claimed is:

1. A method of manufacturing an article of footwear, the method comprising:
locating a first polymer layer, a second polymer layer, and a tensile layer between two mold portions, the tensile layer being positioned between the first polymer layer and the second polymer layer;
locating a bond inhibiting sheet between the tensile layer and the first polymer layer, the bond inhibiting sheet defining voids where the tensile layer and the first polymer layer oppose one another, the voids defined by a plurality of apertures formed through the sheet;
locating an additional bond inhibiting sheet between the tensile layer and the second polymer layer, the additional bond inhibiting sheet defining voids where the tensile layer and the second polymer layer oppose one another, the voids of the additional bond inhibiting sheet being defined by a plurality of apertures formed through the additional bond inhibiting sheet and being offset from the apertures of the bond inhibiting sheet;
compressing the first polymer layer, the second polymer layer, and the tensile layer between the mold portions to form a plurality of discrete and spaced bonds between the tensile layer and the first polymer layer within the voids defined by the bond inhibiting sheet and between the tensile layer and the second polymer layer;
bonding the first polymer layer to the second polymer layer around a periphery spaced from the tensile layer to form a chamber having an interior void;
pressurizing the interior void to space areas of the tensile layer located between the bonds from the first polymer layer and the second polymer layer; and
incorporating the chamber into a sole structure of the article of footwear.

2. The method of claim 1 , wherein the tensile layer has a substantially planar configuration.

3. The method of claim 1 , wherein the tensile layer includes a textile material.

4. The method of claim 3 , wherein the textile material is selected from a group consisting of a textile webbing and a textile mesh.

5. The method of claim 1 , wherein the plurality of bonds include thermal bonds.

6. The method of claim 1 , wherein the bond inhibiting sheet is integrated with one of the first polymer layer and the tensile layer.

7. The method of claim 1 , wherein the step of compressing additionally forms an unbonded portion of the tensile layer substantially surrounding the plurality of bonds.

8. The method of claim 1 , further comprising forming the tensile layer from a sheet having a single layer including a first side that engages the first polymer layer and a second side that engages the second polymer layer, the second side being disposed on an opposite side of the sheet forming the tensile layer than the first side.

9. The method of claim 1 , wherein incorporating the chamber into a sole structure of the article of footwear includes incorporating the bond inhibiting sheet into the sole structure of the article of footwear.

10. A method of manufacturing an article of footwear, the method comprising:
locating a first polymer layer, a second polymer layer, and a tensile layer between two mold portions;
locating a first bond inhibiting sheet between the first polymer layer and the tensile layer;
locating a second bond inhibiting sheet between the second polymer layer and the tensile layer;
extending one of the first polymer layer and the tensile layer through at least one first aperture formed through the first bond inhibiting sheet;
extending one of the second polymer layer and the tensile layer through at least one second aperture formed through the second bond inhibiting sheet, the at least one second aperture being offset from the at least one first aperture;
bonding the first polymer layer to the tensile layer at the at least one first aperture to form a first bond between the tensile layer and the first polymer layer;
bonding the second polymer layer to the tensile layer at the at least one second aperture to form a second bond between the tensile layer and the second polymer layer;
bonding the first polymer layer to the second polymer layer around a periphery spaced from the tensile layer to form a chamber having an interior void;
pressurizing the interior void; and
incorporating the chamber into a sole structure of the article of footwear.

11. The method of claim 10 wherein pressurizing the interior void includes creating a first gap between the first polymer layer and the tensile layer adjacent to the first bond and a second gap between the second polymer layer and the tensile layer adjacent to the second bond.

12. The method of claim 10 , wherein locating the second bond inhibiting sheet includes offsetting the at least one second aperture from the at least one first aperture of the first bond inhibiting sheet in a direction extending substantially parallel to a longitudinal axis of the tensile layer.

13. The method of claim 10 , wherein pressurizing the interior void includes creating a first gap between the first polymer layer and the tensile layer adjacent to the first bond.

14. The method of claim 10 , further comprising compressing the first polymer layer, the second polymer layer, and the tensile layer between the mold portions.

15. The method of claim 14 , wherein compressing the first polymer layer, the second polymer layer, and the tensile layer between the mold portions extends the one of the first polymer layer and the tensile layer through the at least one first aperture formed through the first bond inhibiting sheet and bonds the first polymer layer to the tensile layer to form the first bond.

16. The method of claim 10 , wherein locating the first bond inhibiting sheet includes integrating the first bond inhibiting sheet with the first polymer layer.

17. The method of claim 10 , wherein incorporating the chamber into a sole structure of the article of footwear includes incorporating the bond inhibiting sheet into the sole structure of the article of footwear.

Assignees

• Nike Inc

Inventors

• Taylor Danielle L
• Meschter James C

Classifications

• A43B13/122

  characterised by the outsole or external layer · CPC title

• A43B21/265

  filled with a non-compressible fluid, e.g. gel, water · CPC title

• B32B3/266

  characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12 · CPC title

• A43B13/20 Primary

  Pneumatic soles {filled with a compressible fluid, e.g. air, gas (inflatable linings for skiboots A43B5/0407)} · CPC title

• A43B13/12

  Soles with several layers of different materials · CPC title