US3749378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Producing a foamed liquid
Assignee: Mondelez UK Ltd
•
Filing: 1971-05-28
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Granted: 1973-07-31
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Expires: 1991-05-28
Abstract
Abstract An apparatus for foaming liquids such as coffee extract, tea extract, juices and mixes of emulsions capable of controlling the fineness and density of the foamed liquid consisting of a mixing zone in which gas is introduced into the liquid under pressure and a second zone containing a plurality of spaced, flat annular plates which define numerous paths through which the foam must pass. The foamed liquid may be dried by freeze drying or spray drying. The apparatus is particularly useful in a process for producing a spray dried product.
Inventors
- 👤 D Rhodes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:53
CPC Classifications
A; A23; A23F; A23F5/00; A23F5/24; A23F5/28; A23F5/285; B; B01; B01F; B01F25/00; B01F25/40; B01F25/44; B01F25/441; B01F25/4412; B01F25/44121; A23F5/32; A23F5/34; A23G; A23G3/00; A23G3/02; A23G3/0205; A23G3/0215; A23G3/0221; B01F23/00; B01F23/20; B01F23/23; B01F23/235; Y; Y10; Y10S; Y10S261/00; Y10S261/26; Y10S261/75
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
125 words
An apparatus for foaming aqueous solutions and emulsions comprising a mixing zone, means for introducing a liquid and a gas into said mixing zone under pressure, thus forming a coarse foamed liquid; means for passing said coarse foamed liquid into a second zone under pressure wherein the coarse foamed liquid is converted into a finer foamed liquid with uniformly dispersed gas bubbles; said second zone having flat, spaced plates and means for directing the coarse foamed liquid through the spaces between the plates, the plates in said second zone being annular and having a thickness of from 0.01 to 0.1 inches and the space between said plates being from 0.005 to 0.1 inches; and means for discharging the finer foamed liquid from said second zone.
Claim 2
Independent Claim
125 words
An apparatus for foaming aqueous solutions and emulsions comprising a mixing zone, means for introducing a liquid and a gas into said mixing zone under pressure, thus forming a coarse foamed liquid; means for passing said coarse foamed liquid into a second zone under pressure wherein the coarse foamed liquid is converted into a finer foamed liquid with uniformly dispersed gas bubbles; said second zone having flat, spaced plates and means for directing the coarse foamed liquid through the spaces between the plates, the plates in said second zone being annular and having a thickness of from 0.01 to 0.1 inches and the space between said plates being from 0.005 to 0.1 inches; and means for discharging the finer foamed liquid from said second zone.
Claim 3
Dependent Claim
38 words
The apparatus of claim 1 wherein the gas is introduced into the mixing zone through openings in a dispersion ring, said dispersion ring being a perforated plate shaped to form part of the wall of said mixing zone.
References Cited (Backward Citations)
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US2788276A
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US2976158A
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US3388868A
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US3620306A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |