Patent ID: 9743711
Date: 2017-08-29
CPC Classifications: A43B,B29C,B29D

Claim:
1. A method of making a sole structure having a chamber for an article of footwear, the method comprising: injecting a first material into a first cavity defined by a first mold and a second mold to form a first sole portion having a first base and a first projection extending from and surrounding a periphery of the first base, the first base including an inner surface, a first chamber surface disposed on an opposite side of the first base than the inner surface, at least one first rail projecting from the first chamber surface between a lateral side of the first base and a medial side of the first base and comprising an integral projection, and a valve extending through the integral projection and operable to selectively permit fluid flow through the first base between the inner surface and the chamber; injecting a second material different than the first material into a second cavity defined by the second mold and a third mold to form a second sole portion having a second base and a second projection extending from and surrounding a periphery of the second base, the second cavity disposed on an opposite side of the second mold than the first cavity; attaching the first sole portion and the second sole portion to define the chamber between the first sole portion and the second sole portion; and supplying fluid to the chamber through the valve.