A system for evacuating containers. The system includes a base housing defining a recess having a vacuum inlet port in communication with a vacuum source. An inner door is hinged to the base housing and is sized to cover the recess when in a closed position, and an outer door having a sealing member...http://www.google.co.uk/patents/US7231753?utm_source=gb-gplus-sharePatent US7231753 - Appliance for vacuum sealing food containers
