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AssigneesMartin Berube, Julien Bilodeau, Marlene Paul, Ronald Gaucher
InventorsMartin Berube, Julien Bilodeau, Marlene Paul, Ronald Gaucher, Germain Cote, Guy Boudreault
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A liquid dispensing apparatus comprises a container having a peripheral sidewall, a bottom wall mounted at a lower end of the sidewall and a closure removably mounted to an upper end of the sidewall. A flexible tight plastic bag is mounted at an upper end thereof between the closure and the sidewall in order to hang in the container. The bag thus defines in the container a first and a second chamber which respectively contain the liquid to be dispensed and compressed air. A nozzle extends through the closure into the first chamber. A pressure regulating valve is mounted in the second chamber and defines therein an upper and a lower sub-chamber, with the bag being submitted to forces exerted by the compressed air contained in the upper sub-chamber. The pressure regulating valve ensures a constant pressure in the upper sub-chamber and thus on the bag, whereas the lower sub-chamber acts as a reservoir for the upper sub-chamber. An admission valve extends through the bottom wall into the lower sub-chamber for filling the container with compressed air. Safety valves are also provided in the upper and lower sub-chambers. Therefore, upon actuation of the nozzle, liquid contained in the first chamber is atomized and discharged from the container through the nozzle as the liquid is submitted to the pressure of the compressed air contained in the upper sub-chamber.
A fluid dispensing apparatus comprising a container, a displaceable partition means in said container for defining therein first and second separate variable volume chamber means containing respectively a fluid and a propellant means, said second chamber means comprising first and second sub-chambers and a pressure regulating means provided therebetween;
A fluid dispensing apparatus comprising a container which includes an upstanding tubular sidewall and a bottom wall mounted at a lower end of said sidewall, said container also comprising a removable closure mounted to an upper end of said sidewall, a flexible tight bag having an upper peripheral open end and hanging in said container with said upper open end thereof being peripherally mounted between said closure and said upper end of said sidewall, said bag defining first and second chambers in said container containing respectively a fluid and compressed air, a fluid dispensing means extending through said closure into said first chamber, a partition wall means extending inwards from said sidewall in said container lower than said bag and a pressure regulating means mounted to said partition wall means defining in said second chamber an upper and a lower sub-chamber, said pressure regulating means being adapted to provide a substantially constant air pressure in said upper sub-chamber and thus on said bag, an admission means extending through said container into said lower sub-chamber for filling said container with compressed air, said pressure regulating means comprising bleeding means to allow compressed air to flow therethrough from said upper sub-chamber to said lower sub-chamber when said lower sub-chamber is substantially unpressurized, whereby depressurization of said lower sub-chamber also results in the depressurization of said upper sub-chamber.
Dependencies are inferred from the claim text.