Patent ID: 9056689
Filing Date: 2015-06-16
Classification: B65B,B67D

Abstract:
1. A method of filling a canister with propellant gas, comprising: (a) providing a canister having a specific volume filled with activated carbon having a first temperature, wherein the canister comprises: (b) providing a volume of liquefied propellant gas at a second temperature and a first elevated pressure preventing the liquefied propellant gas from evaporating; (c) evacuating the canister to create a state of vacuum within the canister, thereby cooling the activated carbon to a third temperature lower than the second temperature; (d) injecting the volume of liquefied propellant gas into the canister through the pressure relief vent at a second elevated pressure preventing the liquefied propellant gas from evaporating; (e) allowing the liquefied propellant gas to evaporate, and, in doing so, consuming energy as evaporation heat, the energy being generated due to the propellant gas being adsorbed by the activated carbon, thereby reducing the heating of the activated carbon; and (f) fastening the lid onto the neck part in a sealed position by allowing the first and second screw threads to engage further for causing the lid to seal the opening and preventing gaseous communication between the inner space of the canister and the outside.