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US 7,621,468 B2Granted
System for pressurized delivery of fluids
AssigneeThe Procter & Gamble Company
InventorsScott Edward Smith, William Michael Cannon, Wim Wintmolders
Life of this patent
Estimating the term…
Abstract
A pressurized spray system. The spray system has a flow path through which contents must pass to be dispensed from the system to the atmosphere. By maintaining the proper proportions of restrictions in the flow path to the spray nozzle exit orifice, a relatively constant mean particle size distribution may be obtained throughout the life of the spray system as the pressure decays.
Claims16
A package for dispensing contents therefrom over a predetermined pressure range and comprising:
- a container for containing product therein, said container being internally pressurized, to a pressure ranging from 8.8-5.6 kg/square centimeters;
- a reservoir for containing said product;
- a valve stem for removing said product from said reservoir, said valve stem having an upstream flow restriction therein, said valve stem being movable from a closed first position to an open second position, said flow restriction having an area ranging from 0.006-0.016 square millimeters;
- one or more tangentials for receiving product from said valve stem, said tangentials having a combined tangential flow area;
- and
- a swirl chamber for receiving a confluence of product from said tangentials and air to be mixed therewith;
- a nozzle for dispensing contents from said container to the ambient in an axial direction, said nozzle being in fluid communication with said swirl chamber wherein the ratio of the combined flow area of said tangentials to said upstream flow restriction ranges from 0.8-7.5.
4 more elements
A package for dispensing contents therefrom over a predetermined pressure range and comprising:
- a container for containing product therein, said container being internally pressurized, to a pressure ranging from 5.6 to 2.3 kg/square centimeters;
- a reservoir for containing said product;
- a valve stem for removing said product from said reservoir, said valve stem having an upstream flow restriction therein, said valve stem being movable from a closed first position to an open second position, said flow restriction having an area ranging from 0.010-0.016 square millimeters;
- one or more tangentials for receiving product from said valve stem, said tangentials having a combined tangential flow area;
- and
- a swirl chamber for receiving a confluence of product from said tangentials and air to be mixed therewith;
- a nozzle for dispensing contents from said container to the ambient in an axial direction, said nozzle being in fluid communication with said swirl chamber
- wherein the ratio of the combined flow area of said tangentials to said upstream flow restriction ranges from 1.5-4.4.
5 more elements
Dependencies are inferred from the claim text.