Bottle cap with a flip lid

Abstract

A bottle cap with a flip top is provided that allows easier access to contents of a bottle than conventional twist-off caps. The bottle cap can be made from plastic materials including PET, HDPE, LDPE, or polypropylene. The cap includes a hole through its top surface, and a flip top that conforms to the shape of the hole and can be attached to the cap body by a flexible hinge. The perimeters of the flip top and the opening are provided with a plurality of ridges that interlock to form a mechanical seal when the flip top is pressed down. The area-to-perimeter ratio of the cap opening can be less than about 3/16 inches, to provide a seal that resists internal pressure from carbonated beverages. The cap can be affixed to a bottle using screw threads, an interlocking clamp, or adhesives. Tamper-resistant seals can also be provided on the cap.

Dependencies are inferred from the claim text.