Adjustable Foot Support Systems Including Fluid-Filled Bladder Chambers

A foot support system for an article of footwear, comprising:

• a foot support bladder;
• a fluid reservoir;
• a pump including an inlet and an outlet, the outlet supplying fluid to the foot support bladder;
• a first fluid line placing the fluid reservoir in fluid communication with the inlet of the pump;
• a second fluid line placing the foot support bladder in fluid communication with the fluid reservoir;
• and
• a switch configured to change the second fluid line between an open configuration and a closed configuration, wherein when the second fluid line is in the closed configuration, the pump moves fluid from the fluid reservoir to the foot support bladder, and wherein movement of sufficient fluid from the fluid reservoir to the foot support bladder with the second fluid line in the closed configuration decreases a height dimension of the fluid reservoir.

A sole structure for an article of footwear, comprising:

• a foot support bladder;
• a fluid reservoir;
• a foot-activated pump including:
• (i) an inlet receiving fluid from the fluid reservoir and (ii) an outlet supplying fluid to the foot support bladder;
• a fluid line placing the foot support bladder in fluid communication with the fluid reservoir;
• and
• a switching system configured to change the foot support bladder between:
• (i) a high pressure foot support configuration in which the fluid line is closed and (ii) a low pressure foot support configuration in which the fluid line is open, wherein when the foot support bladder is in the high pressure foot support configuration, the foot-activated pump moves fluid from the fluid reservoir to the foot support bladder, and wherein movement of sufficient fluid from the fluid reservoir to the foot support bladder decreases a height dimension of the fluid reservoir.