A flexible storage and dispensing package for fluid material. The package has a first mode of operation capable of storing the fluid material without leakage when the package is subjected to unintentional external forces and a second mode of operation capable of dispensing the fluid material when the...http://www.google.com.au/patents/US4749108?utm_source=gb-gplus-sharePatent US4749108 - Bimodal storage and dispensing package including self-sealing dispensing valve to provide automatic shut-off and leak-resistant inverted storage
