Dispensing – Collapsible wall-type container – With wall-collapsing means
Patent
1995-07-25
1998-03-24
Huson, Gregory L.
Dispensing
Collapsible wall-type container
With wall-collapsing means
2224021, 22240218, B65D 8300
Patent
active
057303266
DESCRIPTION:
BRIEF SUMMARY
The present invention concerns a rechargeable aerosol can using air as the propellant, comprising: element and a movable element, said fixed hollow element defining a substance outlet chamber and comprising at least one lateral opening and having a narrow portion in its lower section, and said movable element being formed of a button sliding with some play in the outlet chamber, and comprising an outlet with at least one radial opening, a stopper sliding without play in the narrow portion of the substance outlet chamber, and a rod connecting the button to the stopper; a lateral passage for pressurized air, one extremity of which opens into the rigid housing outside the flexible bag, and the other extremity of which opens into said substance evacuation inlet, said valve being designed to be successively displaceable between a first position, called the closed position, in which said inlet and said channel are blocked, a second position, called the flushing position, in which said inlet is open and the channel is blocked, and a third position, called the operative position, in which said inlet and said channel are simultaneously open.
There is a range of aerosol containers on the market for dispensing all sorts of substances such as paint, varnish, glue, oil, synthetic foam, food products, and the like. One disadvantage of the aerosol containers is that when one stops applying the substance, product residue often remains in the nozzle. If the substance is glue, paint, varnish or synthetic foam, it dries in the nozzle, plugs it and renders it utterly useless.
The spray valve described in Patent Application GB-A-2 209 805 attempts to overcome this disadvantage. This valve is attached to an aerosol container which also includes a flexible pouch, but it is not rechargeable and uses a gas other than air as a propellant. The valve which is the subject of the invention comprises a movable rod designed to assume three different positions. In the first position, the valve is closed. In the second position, only the gas propellant can pass through the valve, expelling product residue. In the third position, the valve is open and the gas propellant expels the substance to be dispensed. When the valve is reclosed, that is when it resumes the first position, it automatically passes to the second position, thereby evacuating any product residue.
A current trend in aerosol containers is using rechargeable containers with air as the gas propellent, primarily for ecological reasons. For some products, this has no particular effect However, for others, such as paint, synthetic foam or cosmetic sprays, for example, which must be mixed with the gas propellant, using air prevents uniform mixture of the substance with the gas propellant and causes it to be dispensed in irregular layers.
Aerosol containers presently in use for such substances have an opening located near the spray nozzle. When the nozzle is pressed, the opening is freed to eject the gas-substance mixture. However, this type of aerosol container has various disadvantages. If one wishes to use the container in a position where the spray nozzle is not located at the highest point, for example, horizontally, slanted, or upside down, with the nozzle at the bottom, the substance to be sprayed clogs the opening and the gas-substance mixture either ceases to spray or sprays poorly. More specifically, the product may come out in a stream. Or it may be impossible to spray the substance while holding the aerosol container vertically, with the nozzle at the top. In this case, such containers are impossible to use.
The present invention proposes to overcome the deficiencies of the prior art by achieving a rechargeable aerosol container which uses air as the gas propellant, which may be used in any position, which has a nozzle that does not become clogged with dried product residue, and which also mixes any substance so that it sprays uniformly.
This goal is realized by the aerosol container defined in the preamble, characterized in that it comprises a mixing device designed to
REFERENCES:
patent: 4405064 (1983-09-01), Stoody
LandOfFree
Rechargeable aerosol can and spray valve with integral mixing de does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Rechargeable aerosol can and spray valve with integral mixing de, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rechargeable aerosol can and spray valve with integral mixing de will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2283137