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

• US 7,401,420 B2
• Filed: 05/12/2006
• Issued: 07/22/2008
• Est. Priority Date: 12/23/2003
• Status: Expired due to Term

• Current Assignee: Nike, Inc.
• Original Assignee: Nike, Inc.
• Inventors: Foxen, Thomas, Dojan, Frederick J., Swigart, John F., Schindler, Eric Steven
• Primary Examiner(s): KAVANAUGH, JOHN T
• Application Number:
  US11/434,301
• Publication Number:
  US 20060201029A1
• Time in Patent Office: 802 Days
• Field of Search: 36/29, 361/53, 361/54, 36/35.B
• US Class Current: 36/29
• 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 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, the sole structure comprising:

a bladder that defines a first surface, an opposite second surface, and a sidewall, the bladder enclosing a fluid that exerts an outward force upon the first surface, the second surface, and the sidewall; and

a reinforcing structure extending around at least a portion of the bladder, the reinforcing structure having a first portion that is at least partially recessed into the sidewall and bonded to the sidewall, the first portion being at least partially recessed into the first surface and bonded to a periphery of the first surface to expose a central area of the first surface,

wherein the first surface and the first portion of the reinforcing structure define a lasting surface, and the upper is secured to the lasting surface.

2. The article of footwear recited in claim 1, wherein the reinforcing structure has a plurality of connecting portions extending between the first portion and a second portion of the reinforcing member, the connecting portions extending along the sidewall.

3. The article of footwear recited in claim 2, wherein the connecting portions are at least partially recessed into the sidewall and bonded to the sidewall.

4. The article of footwear recited in claim 3, wherein the connecting portions are placed in tension by the outward force upon the barrier material.

5. The article of footwear recited in claim 4, wherein at least one of the connecting portions is inclined.

6. The article of footwear recited in claim 2, wherein a space between two adjacent connecting portions is positioned in a rear-lateral region of the sole structure.

7. The article of footwear recited in claim 1, wherein a plurality of interior bonds join the first surface with the second surface, the interior bonds being spaced inward from the sidewall to restrain distension of the first surface and the second surface.

8. The article of footwear recited in claim 1, wherein a material forming the reinforcing structure is has a greater modulus of elasticity than a material forming the bladder.

9. The article of footwear recited in claim 1, wherein the bladder and reinforcing structure are secured directly to the upper.

10. The article of footwear recited in claim 1, wherein at least one flexion indentation is formed in the second surface, and a space that includes the fluid extends between the indentation and the first surface.

11. The article of footwear recited in claim 10, wherein at least one interior bond joins the first surface with the indentation, the at least one interior bond being spaced inward from the sidewall.

12. The article of footwear recited in claim 1, wherein the first portion of the reinforcing structure forms a ridge located on medial and lateral sides of the first surface, a portion of the lasting surface being an inclined surface of the ridge, and the lasting surface extends between portions of the ridge.

13. The article of footwear recited in claim 12, wherein the ridge extends around a heel region of the sole structure.

14. An article of footwear comprising:

a sole structure incorporating a fluid-filled bladder and a reinforcing structure secured to the bladder, the sole structure having an upper surface and an opposite lower surface, the upper surface forming a ridge that defines a first portion of a lasting surface, at least a portion of the ridge being an inclined surface formed by the reinforcing structure and located over the bladder, the bladder defining a second portion of the lasting surface; and

an upper secured directly to the first portion of the lasting surface and the second portion of the lasting surface.

15. The article of footwear recited in claim 14, wherein the bladder is a single chamber that extends through substantially all of a length of the sole structure.

16. The article of footwear recited in claim 14, wherein an adhesive directly bonds the bladder and the reinforcing structure to the upper.

17. The article of footwear recited in claim 14, wherein the ridge extends along a medial side of the sole structure, along a lateral side of the sole structure, and around a heel region of the sole structure.

18. The article of footwear recited in claim 14, wherein the upper surface of the sole structure forms a depression, and the ridge extends around the depression.

19. The article of footwear recited in claim 14, wherein a material of the reinforcing has greater stiffness than a material of the bladder.

20. The article of footwear recited in claim 14, wherein the reinforcing structure is recessed into a sidewall of the bladder, the sidewall extending between the upper surface and the lower surface.