US3633283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drying apparatus
Assignee: Societe des Produits Nestle SA
•
Filing: 1970-01-06
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Granted: 1972-01-11
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Expires: 1990-01-06
Abstract
Abstract Drying of liquids is disclosed in which the liquid is sprayed, together with a gaseous fluid such as steams, into a low-pressure zone to cause freezing of the liquid in small particle form, and the frozen particles are then freeze-dried. The liquid may be a biological solution, fruit juice or tea or coffee extract. Apparatus for effecting such drying comprises a freezing chamber, a two fluid nozzle simultaneously spraying liquid and gas into the chamber, a vacuum system with condensers for maintaining a low pressure within the chamber and a freeze-drying chamber.
Inventors
- 👤 Abraham Rudolph Mishkin
- 👤 William Stephen Symbolik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:24
CPC Classifications
F; F26; F26B; F26B5/00; F26B5/04; F26B5/06; F26B5/065; A; A23; A23B; A23B2/00; A23B2/90; A23B2/92; A23F; A23F5/00; A23F5/24; A23F5/28; A23F5/32; A23F5/34; B; B01; B01D; B01D9/00; B01D9/0004; B01D9/0009; B01D9/0018; B01D9/0027; B01D9/0059
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
57 words
The apparatus according to claim 1 In which the means for simultaneously spraying the liquid and the gaseous fluid into said freezing chamber includes a two-fluid nozzle of the suction type, said nozzle having a central aperture therein for discharge of said liquid, and an annular orifice encircling said central aperture for discharge of said gaseous fluid.
Claim 2
Dependent Claim
41 words
The apparatus according to claim 2 in which the central opening and annular orifice in said nozzle are arranged such that the paths of discharge of said liquid and said gaseous fluid intersect at a short distance downstream of said nozzle.
Claim 3
Dependent Claim
43 words
The apparatus of claim 1 further comprising a flexible permeable membrane disposed within said freezing chamber and defining an inner lining therefor, said membrane being made flexible to be subjected to a shaking action for dislodging any particles of frozen liquid attaching thereto.
References Cited (Backward Citations)
US1104920A
Cited
US3431655A
Cited
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 |