US Patent 9850047 Airtight container

An airtight container, comprises a container body, a lid member covering the container body, a sieve disposed on the container body and facing the lid member, and a seal control member movable disposed in a channel of the lid member, operable sealing an opening on the channel of the lid member. Wherein the opening is uncovered when pressing the control member, and covering the lid member on the container body such that forming the negative air pressure in the container after releasing the button.