Plastic closing device with a piercing element

Details Plastic closing device with a piercing element Plastic closing device with a piercing element

2006-05-02

2006-05-02

Keasel, Eric (Department: 3754)

Dispensing

With cutter and/or punch

To form dispensing opening in container

Reexamination Certificate

active

07036683

ABSTRACT:
A closing device for a container having a bung-type lower part with a cylindrical pour spout. The cylindrical pour spout has a female thread in which a cylindrical piercing element that is open to both sides and that has a male thread is retained by a screw connection. A screw cap can be placed on the lower part. The screw cap has a driver that interacts with a driver in the piercing element. A fine-pitch thread is between the screw cap and the lower part and a coarse-pitch thread is between the lower part and the piercing element. The combined screw/translational motion of the piercing element and the selected threads produce a highly effective cutting motion.

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