초록

A milk bottle has an antitamper cap having a plug adapted to fit into the mouth of the bottle. The neck of the bottle is tapered toward the mouth and the cap has means for restraining the top of the neck to keep the mouth in good sealing contact with the plug when the cap is screwed on.

대표청구항 ▼

A combination of a blow molded plastic bottle and a plastic cap, comprising (a) a bottle neck having a mouth, an external screw thread below said mouth and an inwardly directed portion at said mouth, (b) said plastic cap adapted to be screwed onto said neck to cover said mouth and having an upper wa

A combination of a blow molded plastic bottle and a plastic cap, comprising (a) a bottle neck having a mouth, an external screw thread below said mouth and an inwardly directed portion at said mouth, (b) said plastic cap adapted to be screwed onto said neck to cover said mouth and having an upper wall, a side wall with an internal thread corresponding to said external thread, and a downwardly directed circular plug for engaging said inwardly directed portion when said cap is screwed onto said neck and to form an anti-leak seal with said inwardly directed portion, (c) cooperating antitamper means on said cap and bottle and including a permanently deformable element, said antitamper means permitting said cap to be rotated in one direction to screw said cap onto said neck to bring said plug into sealing relation to said mouth and then preventing rotation in an unscrewing direction unless said element is visibly deformed. said inwardly directed portion having an inner surface and an outer surface, said inner and outer surface each extending upwardly and inwardly above said threads at an angle of at least about 30°to the horizontal, said plug having a circular outer surface for engaging said mouth, said outer surface of said plug being tapered to increase in diameter upwardly and to exert an outward force on said mouth and a corresponding inward force on said plug outer surface when said cap is screwed onto said neck.