Patent ID: 7246713

Claim:
A threaded container closure assembly, said assembly comprising: a container neck having an opening; a closure for said neck, the closure having a base portion and a skirt portion; a first screw thread on the neck, said first screw thread comprising one or more first thread segments; a second screw thread on an inner surface of the skirt of the closure, said second screw thread comprising one or more second thread segments; said first and second screw threads being configured to enable a user to secure, remove and resecure the closure into a sealing position on the neck by rotation of the closure on the neck by a continuous smooth rotation through about 90° or less; wherein said first thread segments are shorter than said second thread segments; and wherein the second thread segments are each made up of one or more circumferentially spaced projecting portions, each said portion extending radially no more than about 60° around the closure skirt, the second thread segments forming a substantially continuous helical thread path.