US Patent 11787609 Hinged flip-top cap with tamper-evident inner ring

A hinged flip-top cap with a tamper-evident inner ring includes a base portion, which extends into a pourer portion, and a flip-top lid. A hinge arrangement connects the flip-top lid to the base portion and is foldable with respect to said base portion, so that flip-top lid can be tilted with respect to the base portion and moved between a closed position above the base portion and an open position detached and rotated from the base portion. The inner ring is position inwardly of the flip-top lid and the base portion and operates as a tamper-evident element that reveals whether a first opening between the flip-top lid and the base portion has been made.