| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve a fitted feeling by providing chambers having at least six layers of nearly annular air chambers surrounding the neck, and forming the junctions communicating the air chambers of the chambers large in width at the portion located in the front of the neck and gradually smaller in width toward the rear of the neck. SOLUTION: A valve 2 is provided at the outlet of an air feed pump 1, and a neck fitting section 5 is connected to the valve 2 via a tube 3 having a stopper 4 in the middle. The neck fitting section 5 is provided with a fitting section constituted of a hook-and-loop fastener removable in the vertical direction and located at the rear section of the neck, and the neck fitting section 5 is provided with chambers having at least six layers of nearly annular air chambers surrounding the neck. Junctions communicating the air chambers of the chambers are formed large in width at the portion located in the front of the neck and gradually smaller in width toward the portion located at the rear of the neck, and the fitted feeling of the neck fitting section 5 to the neck is improved.</p> |
