A vent system for an infusion drip chamber is provided according to the invention. The vent system includes an automatic air eliminator communicating with an interior and an exterior of the infusion drip chamber. The automatic air eliminator is capable of automatically venting air from the infusion drip...http://www.google.co.uk/patents/US7828769?utm_source=gb-gplus-sharePatent US7828769 - Manual/auto-prime air eliminator
