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

• US 7,086,180 B2
• Filed: 01/28/2004
• Issued: 08/08/2006
• Est. Priority Date: 12/23/2003
• Status: Active Grant

• 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:
  US10/767,212
• Publication Number:
  US 20050132608A1
• Time in Patent Office: 923 Days
• Field of Search: 36/29, 36/35.B, 361/53
• 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. A sole component for an article of footwear, the sole component comprising:

a bladder formed of a barrier material that encloses a pressurized fluid, the bladder having a first surface, an apposite second surface, and a sidewall extending between the first surface and the second surface; and

a reinforcing structure bonded to the bladder, the reinforcing structure including;

a first portion positioned at an interface of the first surface and the sidewall,

a second portion spaced from the first portion and positioned at an interface of the second surface and the sidewall, and

a plurality of connecting portions extending adjacent to the sidewall and between the first portion and the second portion, the connecting portions being recessed into sidewall,

wherein the sidewall has a first area that is covered by the connecting portions and a second area that is exposed to an exterior of the sole component, the first area. being less than the second area.

2. The sole component recited in claim 1, wherein the first portion extends along a lateral side of the bladder, around a heel region of the bladder, and along a medial side of the bladder.

3. The sale component recited in claim 2, wherein at least one bridge member extends across the bladder and connects opposite sides of the first portion.

4. The sole component recited in claim 1, wherein at least one of the connecting portions is inclined.

5. The sole component recited in claim 1, wherein spaces are formed between the connecting portions.

6. The sole component recited in claim 5, wherein one of the spaces is positioned in a rear-lateral region of the sole structure.

7. The sole component recited in claim 1, wherein a material forming the reinforcing structure has a greater modulus of elasticity than the barrier material.

8. The sole component recited in claim 1, wherein a material forming the reinforcing structure has a greater stiffliess than the barrier material.

9. The sole component recited in claim 1, wherein the reinforcing structure includes extensions that extend outward from the bladder.

10. The sole component recited in claim 1, wherein the reinforcing structure includes vent apertures that release air from between the bladder and the reinforcing structure.

11. The sole component recited in claim 1, wherein the reinforcing structure extends between the first surface and the second surface only in a midfoot region and a heel region of the sole component.

12. The sole component recited in claim 1, wherein the barrier material includes a first barrier layer that forms the first surface and the sidewall, and the barrier material includes a second barrier layer that forms the second surface.

13. The sole component recited in claim 12, wherein the reinforcing structure is bonded only to the first barrier layer.

14. The sole component recited in claim 1, wherein edges of the reinforcing structure are beveled.

15. The sole component recited in claim 1, the connecting portions are in tension when the sole component is in an uncompressed state.

16. A sole component for an article of footwear, the sole component comprising:

a bladder formed of a barrier material that encloses a fluid; and

a reinforcing structure at least partially recessed into the barrier material and bonded to the barrier material,

wherein an exposed surface of the bladder is exposed to an exterior of the sole component, and an exposed surface of the reinforcing stmcture is exposed to the exterior of the sole component, the exposed surface of the bladder being substantially co-planar with the exposed surface of the reinforcing structure at an interface between the exposed surface of the bladder and the exposed surface of the reinforcing structure.

17. The sale component recited in claim 16, wherein at least a portion of the exposed surface of the bladder that is spaced from the interface bulges outward to form a convex area of the exposed surface of the bladder.

18. The sole component recited in claim 16, wherein the reinforcing structure has a first portion, a second portion, and a plurality of connecting portions extending between the first portion and the second portion.

19. The sole component recited in claim 18, wherein the first portion is secured to the bladder at an interface between a first surface end a sidewall, and the second portion is secured to the bladder at an interface between a second surface and the sidewall, the first surface being positioned opposite the second surface.

20. The sole component recited in claim 19, wherein the first portion extends along a lateral side of the bladder, around a heel region of the bladder, and along a medial side of the bladder.

21. The sole component recited in claim 20, wherein at least one bridge member extends laterally across the bladder and connects opposite sides of the first portion.

22. The sole component recited in claim 19, wherein at least one of the connecting portions is inclined.

23. The sole component recited in claim 19, wherein spaces arc formed between the connecting portions.

24. The sole component recited in claim 23, wherein one of the spaces is positioned in a rear-lateral region of the sole structure.

25. The sole component recited in claim 16, wherein a material forming the reinforcing structure has a greater modulus of elasticity than the barrier material.

26. The sole component recited in claim 16, wherein a material forming the reinforcing structure has a greater stiffness than the barrier material.

27. The sole component recited in claim 16, wherein the reinforcing structure includes extensions that extend outward from the bladder.

28. The sole component recited in claim 16, wherein the reinforcing structure includes vent apertures that release air from between the bladder and the reinforcing structure.

29. The sole component recited in claim 16, wherein the barrier material includes a first barrier layer that forms a first surface and a sidewall, and the baffler material includes a second barrier layer that forms a second surface, the first surface being opposite the second surface.

30. The sole component recited in claim 29, wherein the reinforcing structure is bonded only to the first barrier layer.

31. The sole component recited in claim 16, wherein edges of the reinforcing structure are beveled.

32. The sole component recited in claim 16, wherein a portion of the reinforcing structure is in tension when the sole component is m an uncompressed state.