Apparatus for discharging a fluid, and, more particularly,...

Details Apparatus for discharging a fluid, and, more particularly,... Apparatus for discharging a fluid, and, more particularly,...

B - Operations, Transporting

65

D

222/51, 222/54

B65D 83/42 (2006.01) B65B 31/00 (2006.01) B65D 83/14 (2006.01) B65D 83/62 (2006.01) B65D 83/00 (2006.01)

Patent

CA 2011406

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 and hangs in the container . The bag thus defines in the container first and second chambers which respectively contain a 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 upper and lower sub-chambers, with the bag being submitted to forces exerted by the compressed air contained in the upper sub-chamber. The pressure regulating valve ensures a substantially 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 discharged from the container through the nozzle as the liquid is under pressure from the compressed air contained in the upper sub-chamber.

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