Patent ID: 7204383

Claim:
A seal container, comprising a lid, the lid having a central hole, and an annular portion on a lower side thereof, which defines a holding room facing the central hole; the annular portion having a plurality of guide bumps spaced apart on an inner side thereof; a knob member having a central raised portion, and a rim around the central raised portion; the knob member having a plurality of touching projections spaced apart on an edge of a lower side thereof; the knob member being passed through the central hole of the lid at the central raised portion with the central raised portion facing up and with the rim being confined in the holding room of the lid; an annular depressing member, the depressing member having a plurality of upwards facing slopes of same shape formed thereon; the depressing member having a plurality of cavities spaced apart on an outer side thereof; the depressing member being held in the holding room of the lower side of the lid with the slopes thereof touching respective ones of lower ends of the touching projections of the knob member; the guide bumps of the lid being respectively held in the cavities of the depressing member such that the depressing member is prevented from turning relative to the lid, and such that the depressing member is allowed to move up and down relative to the lid; a container body having an inner touching portion around an upper opening thereof; and a soft seal member for sealing the container body with; the soft seal member being fitted over the lower side of the lid, and connected with the lower side of the depressing member at a substantially middle portion thereof; whereby the seal member will be depressed at the middle portion thereof by the depressing member, and reduced in circumference as soon as the knob member is turned to such a position that the touching projections thereof touch higher ends of the slopes of the depressing member; and whereby the seal member will stretch to a normal shape and closely touch the inner touching portion of the container body to seal the container body as soon as the knob member is turned to such a position that the touching projections thereof touch lower ends of the slopes of the depressing member.