Patent Number: 6,308,849

Title: Cap for containers used on drinking water dispensers

Abstract: The cap snaps onto the neck of a container used on a water dispenser and has an inner cylinder, which engages a probe in the dispenser when the container is installed on a dispenser. The end of the inner cylinder is closed by a membrane which is frangible and grooved such that the probe breaks the membrane into a plurality of petals which are displaced and deformed as the probe moves through the cap. The membrane extends into the inner cylinder and is turned inside out as the probe passes through. In a preferred embodiment the membrane has an outer rim, a first frusto-conical portion, a second rim, a second, smaller frusto-conical portion extending in a direction opposite the direction of the first frusto-conical portion and a flat end.

Inventors: Kim; Charles Y. J. (Vancouver, BC, CA)


International Classification: B67D 3/00 (20060101); B65D 051/00 ()

Expiration Date: 10/30/2018