Self-inflating mattress

Abstract

A self-inflating mattress has a hollow body, an inflating valve, a deflating valve, a unidirectional valve and a foam material. The body has at least two chambers respectively serving as a primary chamber with a supporting chamber and a secondary chamber. The inflating and deflating valves are mounted on the body and communicate respectively with the primary and secondary chambers. The unidirectional valve is mounted on the supporting chamber, communicates with the supporting and secondary chambers and only allows air to flow from the primary chamber to the secondary chamber when open. The foam material is mounted in the primary chamber. The operation of the inflation/deflation of the primary and secondary chambers is implemented without an air pump and is convenient. Furthermore, the supporting chamber provides convenience for tightly fitting of the unidirectional valve without any leakage.

Dependencies are inferred from the claim text.