Patent US3634128A successfully refreshed from Google Patents.
US3634128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for concentrating liquid foods
Assignee: United States Department of Agriculture
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Filing: 1969-09-18
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Granted: 1972-01-11
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Expires: 1989-09-18
Abstract
Abstract I. A juice which contains undissolved material is subjected to a separation treatment, e.g., screening, filtration, or centrifugation. II. The resulting clarified juice is applied to one side of a membrane while heated air is applied to the other side thereof to evaporate water which diffuses through the membrane. Concomitantly cooling is applied to the juice to prevent damage thereof. III. The concentrated juice formed in the diffusion process is then blended with the undissolved material separated from the original juice in step I.
Inventors
- 👤 Harold R Bolin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:31
CPC Classifications
A; A23; A23L; A23L2/00; A23L2/02; A23L2/08; A23L2/082; Y; Y10; Y10S; Y10S159/00; Y10S159/23; Y10S159/27
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
82 words
A JUICE WHICH CONTAINS UNDISSOLVED MATERIAL IS SUBJECTED TO A SEPARATION TREATMENT, E.G., SCREENING, FILTRATION, OR CENTRIFUGATION.II. THE RESULTING CLARIFIED JUICE IS APPLIED TO ONE SIDE OF A MEMBRANE WHILE HEATED AIR IS APPLIED TO THE OTHER SIDE THEREOF TO EVAPORATE WATER WHICH DIFFUSES THROUGH THE MEMBRANE. CONCOMITANTLY COOLING IS APPLIED TO THE JUICE TO PREVENT DAMAGE THEREOF. III. THE CONCENTRATED JUICE FORMED IN THE DIFFUSION PROCESS IS THEN BLENDED WITH THE UNDISSOLVED MATERIAL SEPARATED FROM THE ORIGINAL JUICE IN STEP 1.
Claim 2
Dependent Claim
82 words
A JUICE WHICH CONTAINS UNDISSOLVED MATERIAL IS SUBJECTED TO A SEPARATION TREATMENT, E.G., SCREENING, FILTRATION, OR CENTRIFUGATION.II. THE RESULTING CLARIFIED JUICE IS APPLIED TO ONE SIDE OF A MEMBRANE WHILE HEATED AIR IS APPLIED TO THE OTHER SIDE THEREOF TO EVAPORATE WATER WHICH DIFFUSES THROUGH THE MEMBRANE. CONCOMITANTLY COOLING IS APPLIED TO THE JUICE TO PREVENT DAMAGE THEREOF. III. THE CONCENTRATED JUICE FORMED IN THE DIFFUSION PROCESS IS THEN BLENDED WITH THE UNDISSOLVED MATERIAL SEPARATED FROM THE ORIGINAL JUICE IN STEP 1.
Claim 3
Dependent Claim
22 words
The process of claim 1 wherein the juice is tomato juice which contains a pulp of undissolved fibrous particles, pigments, and pectin.
Claim 4
Dependent Claim
138 words
Apparatus for concentrating juices comprising, in combination a. a first header, b. a second header disposed beneath the first header, c. a plurality of tubular membranes mounted vertically between said headers and supported solely at their tops and bottoms by said headers, d. an enclosure about the tubular membranes but spaced therefrom, e. means for impelling a current of gas heated to 90* to 165* F., through the enclosure and against the outer surfaces of the tubular membranes, f. means for feeding a juice into the first header for passage through the tubular membranes, g. means for withdrawing concentrated juice from the second header, and h. a circulation loop communicating with the first and second header, the loop including a circulating pump and a cooler for maintaining the juice at a predetermined temperature of 50* to 85* F.
Claim 5
Dependent Claim
138 words
Apparatus for concentrating juices comprising, in combination a. a first header, b. a second header disposed beneath the first header, c. a plurality of tubular membranes mounted vertically between said headers and supported solely at their tops and bottoms by said headers, d. an enclosure about the tubular membranes but spaced therefrom, e. means for impelling a current of gas heated to 90* to 165* F., through the enclosure and against the outer surfaces of the tubular membranes, f. means for feeding a juice into the first header for passage through the tubular membranes, g. means for withdrawing concentrated juice from the second header, and h. a circulation loop communicating with the first and second header, the loop including a circulating pump and a cooler for maintaining the juice at a predetermined temperature of 50* to 85* F.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |