A sole structure for an article of footwear includes a forefoot region disposed adjacent an anterior end, a heel region disposed adjacent a posterior end, and a mid-foot region disposed intermediate the forefoot region and the heel region. The sole structure further includes fluid-filled bladder having a first segment extending along a medial side in the heel region, a second segment extending along a lateral side in the heel region, and a web area disposed between the first segment and the second segment. Additionally, the sole structure includes an outer sole member having an upper portion extending from a first end in the forefoot region to a second end in the heel region. The second end of the outer sole member is received on a first side of the web area. The outer sole member also includes a rib extending downwardly from the upper portion and defining a cavity.

A sole structure for an article of footwear having an upper includes a heel region, a forefoot region, and a mid-foot region disposed between the heel region and the forefoot region. The sole structure also includes a fluid-filled chamber including a first barrier layer cooperating with a second barrier layer to define a segment extending along a medial side of the sole structure within the heel region, a second segment extending along a lateral side of the sole structure within the heel region, a third segment extending from one of the first segment and the second segment and terminating at a distal end intermediate the first segment and the second segment, and a web area disposed between and connecting the first segment and the second segment. The first barrier layer is attached to the second barrier layer within the web area.

A shock absorbing system for force attenuation, impact modification or reduction, employs an envelope having a chamber containing a first working fluid, the envelope deformable in response to the impulse to attenuate impact force. A plurality of resilient supplemental absorber elements dispersed within the chamber. The plurality of resilient supplemental absorber elements are deformable in response to the force to assist in attenuating impact force and provide additional resilient restoring force to return the envelope to a pre-impact shape. In alternative implementations, a unitary cell for energy dissipation employs an envelope having a chamber containing a first working fluid and an inner element contained within the chamber and having an inner chamber containing a second working fluid.

An adjustable multiple bladder system for an article of footwear is disclosed. The bladder system includes an outer bladder that may be inflated using an external pump. A valve member is disposed within the outer bladder and divides the outer bladder into two distinct inflation chambers. The inflation chambers may be inflated separately.

Multi-layered structures and methods for producing them are disclosed.

The disclosure id directed to an article of footwear including an upper and the sole structure, to the sole structure, and to a method for manufacturing the sole structure and a method for manufacturing the article of footwear. The sole structure includes a fluid-filled chamber and an outsole that at least partially surrounds the chamber.

A fluid-filled chamber includes first subchamber having a substantially U-shape. The fluid-filled chamber also includes a second subchamber having a substantially U-shape and being spaced apart from the first subchamber in a direction extending along a longitudinal axis of the fluid-filled chamber.

An article of footwear including an adaptive support system includes a plurality of support members. Each support member includes an outer chamber and an inner chamber, the inner chamber being filled with a magnetorheological fluid. An electromagnet is disposed adjacent to the inner chamber and can be used to vary the viscosity of the magnetorheological fluid.

A sole structure for an article of footwear includes a forefoot region disposed adjacent an anterior end, a heel region disposed adjacent a posterior end, and a mid-foot region disposed intermediate the forefoot region and the heel region. The sole structure further includes fluid-filled bladder having a first segment extending along a medial side in the heel region, a second segment extending along a lateral side in the heel region, and a web area disposed between the first segment and the second segment. Additionally, the sole structure includes an outer sole member having an upper portion extending from a first end in the forefoot region to a second end in the heel region. The second end of the outer sole member is received on a first side of the web area. The outer sole member also includes a rib extending downwardly from the upper portion and defining a cavity.

Articles of footwear can include an adaptive-height sole structure that includes a variable height bladder system. The sole structure can include one or more bladder systems positioned between a midsole and a banking plate. The banking plate can change its relative orientation to the midsole based on an inflation level of the bladder systems.