PRESSURISED CONTAINER WITH PRESSURE RELIEF VALVE
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United States of America Patent
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Issued Date -
Jun 29, 2017
app pub date -
Apr 2, 2015
filing date -
Apr 4, 2014
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Abstract
A stretch blow moulded container such as a keg has a neck 3 fitted with a cap 4 to retain pressurised contents within the container. A miniature pressure relief valve (PRV) 30-33 is contained within the wall thickness of the neck to release gases on the occurrence of an overpressure event. The PRV may incorporate a bursting element, which renders the containers unusable, or a spring-loaded seal 30 which re-seals after the release of excess pressure. The PRV may also be permanently changed to an open condition by removal of the cap, preventing re-use of the container.
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