Closure device for containers

Details Closure device for containers Closure device for containers

B - Operations, Transporting

65

D

206/26

B65D 55/02 (2006.01) B65D 50/04 (2006.01)

Patent

CA 1291722

ABSTRACT OF THE DISCLOSURE The invention relates to a closure device for mounting on the screw-threaded cylindrical opening of a container, comprising inner and outer closure members and which have first drive means for turning the device in the clockwise sense to mount the device on the opening and second drive means comprising a hexaganol projection and a hexagonal orifice which are engaged on applying axial pressure on the device and which, on applying an anti- clockwise torque cooperate to unscrew the device from the opening. The orifice may be initially closed, or partly so, by a cover secured to the boundary of the orifice by frangible connectors which are fractured by the projection on initial axial pressure being applied. This provides a tamper evident feature. In other embodiments, a cover has a manually graspable tab for tearing it from the opening before axial pressure is applied.

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