US3995666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for filling aerosol spray dispensers
Assignee: VCA Corp
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Filing: 1975-12-24
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Granted: 1976-12-07
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Expires: 1995-12-24
Abstract
Abstract A method for rapidly filling an aerosol spray dispenser containing a liquid with a soluble gas propellant including lifting the cap off the container and injecting the propellant into the container at a velocity sufficient to substantially saturate the liquid with the propellant.
Inventors
- 👤 Robert E. Michaels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:16
CPC Classifications
B; B65; B65B; B65B31/00; B65B31/003
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
119 words
In a method for rapidly pressurizing an aerosol spray container having a liquid product therein, wherein a dispensing assembly is loosely positioned on the rim of the top of the container, air is evacuated from the container, the dispensing assembly is raised from the rim, a propellant gas under pressure is introduced into the container, and the dispensing assembly is fixedly attached to the container, the improvement comprising positioning the dispensing assembly at a distance above the rim of the top of the container which will cause the pressurizing gas to enter the container at a velocity sufficient to cause intense agitation of the liquid thereby substantially saturating the liquid with the propellant gas in a very short time.
Claim 2
Dependent Claim
119 words
In a method for rapidly pressurizing an aerosol spray container having a liquid product therein, wherein a dispensing assembly is loosely positioned on the rim of the top of the container, air is evacuated from the container, the dispensing assembly is raised from the rim, a propellant gas under pressure is introduced into the container, and the dispensing assembly is fixedly attached to the container, the improvement comprising positioning the dispensing assembly at a distance above the rim of the top of the container which will cause the pressurizing gas to enter the container at a velocity sufficient to cause intense agitation of the liquid thereby substantially saturating the liquid with the propellant gas in a very short time.
Claim 3
Dependent Claim
12 words
The method of claim 1 wherein said propellant gas is carbon dioxide.
Claim 4
Dependent Claim
12 words
The method of claim 1 wherein said propellant gas is nitrous oxide.
References Cited (Backward Citations)
US3234707A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-12-07 | 1980-06-07 | 1980-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-07 | 1984-06-07 | 1984-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-07 | 1988-06-07 | 1988-12-07 | $7700.00 | Window Closed / Lapsed |