Article of footwear having a fluid-filled bladder with a reinforcing structure

• US 7,665,230 B2
• Filed: 05/09/2008
• Issued: 02/23/2010
• Est. Priority Date: 12/23/2003
• Status: Active Grant

• Current Assignee: Nike, Inc.
• Original Assignee: Nike, Inc.
• Inventors: Foxen, Thomas, Dojan, Frederick J., Lindner, Troy C., Holt, Scott C.
• Primary Examiner(s): KAVANAUGH, JOHN T
• Application Number:
  US12/118,000
• Publication Number:
  US 20080201985A1
• Time in Patent Office: 655 Days
• Field of Search: 36/29, 36/28, 36/35.B, 361/53, 361/54
• US Class Current: 36/29
• CPC Class Codes: A43B 13/146 Concave end portions, e.g. with a cavity or cut-out portion
• CPC Class Codes: A43B 13/20 Pneumatic soles filled with a compressible fluid, e.g. air, gas inflatable linings for skiboots A43B5/0407
• CPC Class Codes: A43B 13/223 Profiled soles
• CPC Class Codes: A43B 15/00 Welts for footwear
• CPC Class Codes: A43B 21/28 Pneumatic heels filled with a compressible fluid, e.g. air, gas
• CPC Class Codes: B29D 35/122 Soles

Abstract

A sole component and a method of manufacturing the sole component are disclosed. In general, the sole component includes a fluid-filled bladder and a reinforcing structure extending around the bladder. The reinforcing structure is bonded to the exterior of the bladder, and may be recessed into the bladder. In some embodiments, the reinforcing structure extends along the side surfaces of the bladder and between upper and lower surfaces of bladder. In manufacturing the sole component, the reinforcing structure may be located within a mold, and the polymer material forming the bladder may be bonded to the reinforcing structure during the molding process.

Claims

1. An article of footwear having an upper and a sole structure secured to the upper, a midsole of the sole structure comprising:

a bladder formed from a barrier that encloses a fluid, the bladder having at least an upper surface and an opposite lower surface; and

a reinforcing structure secured to an exterior of the bladder and at least partially recessed into the barrier,

the bladder and reinforcing structure being located in a heel region of the footwear, the bladder forming a tapered area in a midfoot region of the footwear, the upper surface approaching the lower surface to decrease a thickness of the bladder in the tapered area, and the bladder tapering downward to a lower surface of the midsole in the tapered area.

2. The article of footwear recited in claim 1, wherein the tapered area interfaces with a foam element, the foam element extending from the tapered area to a forefoot region of the footwear.

3. The article of footwear recited in claim 1, wherein a portion of the foam element extends above the tapered area and contacts the upper surface.

4. The article of footwear recited in claim 1, wherein the bladder and the reinforcing structure are exposed to an exterior of the footwear on both a lateral side and an opposite medial side of the sole structure.

5. The article of footwear recited in claim 1, wherein the bladder includes a sidewall extending between the upper surface and the lower surface, the reinforcing structure being at least partially recessed into the sidewall, and the reinforcing structure defining a plurality of apertures that expose portions of the sidewall.

6. The article of footwear recited in claim 1, wherein the bladder includes a sidewall extending between the upper surface and the lower surface, the reinforcing structure being at least partially recessed into the sidewall and extending from the upper surface to the lower surface.

7. An article of footwear having an upper and a sole structure secured to the upper, the sole structure comprising:

a bladder formed of a barrier material that encloses a fluid, the bladder including an upper bladder surface, an opposite lower bladder surface, and a sidewall extending between the upper bladder surface and the lower bladder surface, the bladder being located in a heel region and a portion of a midfoot region of the footwear, and the bladder having a tapered area in the midfoot region, the upper bladder surface tapering downward to the lower bladder surface in the tapered area;

a reinforcing structure secured to an exterior of the bladder and at least partially recessed into the sidewall;

an outsole located below the bladder and forming a ground-contacting element of the sole structure; and

a polymer foam element including an upper foam surface, an opposite lower foam surface, and a sidewall extending between the upper foam surface and the lower foam surface, the foam element being located in a forefoot region and a portion of the midfoot region, a first portion of the lower foam surface being adjacent to and extending above the upper bladder surface in the tapered area, and a second portion of the lower foam surface being adjacent to and extending above the outsole in a forefoot region of the footwear.

8. The article of footwear recited in claim 7, wherein the sidewall and the reinforcing structure are exposed to an exterior of the footwear on both a lateral side and an opposite medial side of the sole structure.

9. The article of footwear recited in claim 7, wherein at least a portion of the reinforcing structure extends along an interface between the upper bladder surface and the sidewall.

10. The article of footwear recited in claim 7, wherein the reinforcing structure defines a plurality of apertures that expose portions of the sidewall.

11. The article of footwear recited in claim 7, wherein the reinforcing structure extends from the upper bladder surface to the lower bladder surface.

12. An article of footwear having an upper and a sole structure secured to the upper, the sole structure comprising:

a bladder formed from a barrier that encloses a fluid, the bladder having an upper bladder surface, an opposite lower bladder surface, and a sidewall extending between the upper bladder surface and the lower bladder surface, the bladder having a tapered area where the upper bladder surface tapers downward to the lower bladder surface, the bladder being exposed to an exterior of the footwear on both a medial side and an opposite lateral side of the sole structure; and

a polymer foam element including an upper foam surface and an opposite lower foam surface, a portion of the lower foam surface contacting and extending above the upper bladder surface in the tapered area, and the foam element tapering upward to an upper surface of the sole structure in the tapered area.

13. The article of footwear recited in claim 12, wherein a reinforcing structure is secured to an exterior of the bladder and at least partially recessed into the barrier.

14. The article of footwear recited in claim 13, wherein the reinforcing structure is exposed to the exterior of the footwear on both the lateral side and the medial side of the sole structure.

15. The article of footwear recited in claim 13, wherein the reinforcing structure defines a plurality of apertures that expose portions of the sidewall.

16. The article of footwear recited in claim 13, wherein the reinforcing structure extends from the upper bladder surface to the lower bladder surface.

17. The article of footwear recited in claim 12, wherein the sole structure further includes an outsole secured to the lower bladder surface and the lower foam surface.