| CPC B65D 41/3428 (2013.01) [B65D 55/16 (2013.01)] | 9 Claims | 

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               4. A cap for a container, comprising: 
            a main body having a top plate and a circular sidewall, the top plate having a top surface, wherein two opposite sides of the circular sidewall circularly connect to each other, one periphery of the circular sidewall connects to one surface of the top plate forming a closed end, and the other periphery of the circular sidewall at the opposite side of the closed end forms an opened end; 
                a ring member, which is located at the opened end of the main body; 
                a first incision between the opened end of the main body and the ring member, the first incision having a first end and a second end, the first end being separated from the second end, the first incision comprising a first plurality of incision sections, connected in series; and 
                a second incision located on the main body or the ring member, the second incision having a first end and a second end, the first end of the second incision being separated from the second end of the second incision, the second incision including a second plurality of incision sections, connected in series; 
                wherein the first incision and the second incision do not intersect and are configured so that when the cap is on the container and the cap is unscrewed, the main body separates from the ring member except for a first connection portion formed between a first incision section from the first plurality of incision sections and a first incision section from the second plurality of incision sections and except for a second connection portion formed between a second incision section from the first plurality of incision sections and a second incision section from the second plurality of incision sections; 
                wherein the first incision section from the first plurality of incision sections and the second incision section from the second plurality of incision sections are located on a first incision plane; 
                wherein the second incision section from the first plurality of incision sections and the first incision section from the second plurality of incision sections are located on a second incision plane; 
                wherein the first incision plane is parallel to the second incision plane; and 
                wherein the first incision includes a portion that penetrates the ring member so that when the cap is unscrewed, a tab connected to the circular sidewall juts out from the circular sidewall and the ring member includes a notch that was formerly occupied by the tab, and when the cap is screwed shut, the tab is located within the notch, the tab having a diagonal sidewall shaped to not interfere with unscrewing the cap. 
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