US Patent 9199784 Spring-biased flip top case for an aerosol canister

A spring mechanism comprising a spring element having a pair of arms separated by a gap, a tapered flexible tongue with an enlarged tip, and a tapered slot extending longitudinally through the tongue, wherein the tapered flexible tongue is operatively arranged to bend such that the tip enters the gap and engages the pair of arms. A case for a canister capable of dispelling material is also disclosed using the spring mechanism to bias a lid in a closed position.