Dispensing – With discharge assistant – Fluid pressure
Patent
1996-04-11
1998-06-23
Shaver, Kevin P.
Dispensing
With discharge assistant
Fluid pressure
B65D 8314
Patent
active
057692831
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a fixed-amount spray type aerosol container. More specifically, the present invention relates to a fixed-amount spray type aerosol container which is filled with compressed air and which can inject the contents therein at a nearly fixed amount almost every time, even if fixed amount spray type aerosol container is used repeatedly.
BACKGROUND OF THE INVENTION
Hitherto, in order to allow the active ingredients that give tastes, drug effects and similar to directly act on a desired portion such as nasal cavity, palate, oral cavity, pharynx and tongue, such process is designed so that the active ingredients are liquefied and filled in a so-called nebulizer type finger-pressing air pump, and the liquefied active ingredient is sprayed over a desired portion in the oral cavity.
However, the nebulizer type finger-pressing air pump has problems that, because a nozzle moves vertically in operating the air pump, it is extremely difficult to precisely spray the active ingredient onto a specific portion only, and in addition, when the nozzle is restored to the original position, the external air is sucked into the air pump, creating a fear that the inside of the air pump is contaminated by various germs present in air.
Therefore, for a method to allow active ingredients to directly act on a specific portion, investigation has been made on a method for filling active ingredients in an aerosol container and spraying the active ingredients over the specific portion. However, since the active ingredients are continuously sprayed when an aerosol container is used, the active ingredients attach to the specific portion in large quantities, whereby generating side effects or wasting the active ingredients.
Therefore, under these circumstances, the present inventors made earnest efforts to develop products which can precisely give active ingredients to a desired portion, and at the same time is free from entry of air outside the product into the inside thereof and ensures high sanitation, and further is able to spray the active ingredients of a fixed amount using compressed gas, and finally have found such products and have completed the present invention.
SUMMARY OF THE INVENTION
That is, the present invention relates to a fixed-amount spray type aerosol container in which a stem rubber is pressed against a mounting cap by a spring provided below a stem connected to a nozzle, and a tank is fixed between a guide bushing that fixes the stem rubber and a housing, the container including a shape stabilizer installed between the guide bushing and the tank.
The fixed-amount spray type aerosol container of the present invention, includes the combination of: a container body having an opening therethrough leading to a chamber therein; a housing having a main body portion and a flange, wherein the flange is supported on the opening of the container body and the main body portion hangs suspendedly through the opening in the chamber of the container body; a gasket between an outer surface of the housing and an inner surface of the container body; mounted over the opening in the container body so as to be in contact with the flange of the housing; a stem having first and second ends, wherein the first end projects out of the container body through an opening in the mounting cap and the second end projects into the container body within the housing; a stem rubber fitted around the stem; a spring fitted around the second end of the stem and pressing the stem rubber to the mounting cap; a nozzle attached to the first end of the stem; a dip tube connected to the housing within the chamber of the container body; a guide bushing located between the stem and the housing; a tank, having a bottom portion and a side wall, is located between the guide bushing and the housing, wherein the tank is supported by the housing so that the bottom portion of the tank makes sealing contact with the housing and the side wall of the tank is pressed radially inwardly by a pressure of a gas charged in
REFERENCES:
patent: 3104785 (1963-09-01), Beard, Jr.
patent: 3185356 (1965-05-01), Venus, Jr.
patent: 3405846 (1968-10-01), Klun
patent: 5037013 (1991-08-01), Howlett
Mekata Satoshi
Owada Ryoichi
Osaka Shipbuilding Co., Ltd.
Shaver Kevin P.
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