| 摘要 |
PROBLEM TO BE SOLVED: To provide a vacuum container having a vacuum indicating function. SOLUTION: The vacuum container is composed of a container main body 1 and a cover body 2, and the cover body is placed at the upside of the container main body and composed of a base sheet 20, an upper cover 21 having a cavity 29 at its upper edge and connected to the upside of the base sheet, a suction unit 22 installed at a space between the base sheet and the upper cover for drawing air in the container toward one direction, and an indication unit 23 for which an extensile/contractile cylinder 37 having one end thereof connected to the base sheet while communicating with the inside of the container main body and having a rack 39 at the other end thereof is provided, and the rack meshes with a pinion 40 pivoted at the base sheet with an indicating needle fixed thereon so as to be put inside the cavity having the graduations put thereon at the upper cover. |
