Patent ID: 8241450

Claim:
A method of manufacturing an article of footwear including an upper with a void for receiving a foot of a wearer of the article of footwear and a sole structure having a ground engaging surface, the method comprising: forming a chamber to include a first surface, an opposite second surface, and a sidewall surface extending between the first surface and the second surface; defining a depression in the first surface and the second surface, the depression being spaced inward from the sidewall surface, and the depression being located between lateral subchamber portions; shaping the lateral subchamber portions to extend upwards in a direction towards the upper to a greater extent than the depression and to extend downwards in a direction towards the ground engaging surface to a greater extent than the depression; defining an aperture in the first surface and in the depression, the aperture being within the depression; locating a pressurization apparatus adjacent to the first surface and around the aperture; utilizing the pressurization apparatus to (a) inject a fluid into the chamber through the aperture, (b) compress the first surface against the second surface, and (c) form a bond around the aperture and between the first surface and the second surface; and incorporating the chamber into a sole structure of the article of footwear.