US3243892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Freeze drying apparatus
Assignee: BEVERLY REFRIGERATION Inc
•
Filing: 1964-02-24
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Granted: 1966-04-05
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Expires: 1984-02-24
Abstract
No abstract record available.
Inventors
- 👤 William R Ullrich
- 👤 Wilburn E Christison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:16
CPC Classifications
F; F26; F26B; F26B5/00; F26B5/04; F26B5/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
1. FREEZE-DRYING APPARATUS FOR REMOVING ICE FROM A FROZEN PRODUCT BY SUBLIMATION INCLUDING: AN UPRIGHT DRYING CHAMBER HAVING AN ENTRANCE AT THE UPPER END THEREOF AND HAVING AN EXIT AT THE LOWER END THEREOF, A PLURALITY OF GROUPS OF INCLINED PLATENS MOUNTED IN SAID DRYING CHAMBER, SAID GROUPS BEING MOUNTED IN DISPLACED POSITIONS IN SAID DRYING CHAMBER ONE ABOVE THE OTHER FOR TRANSPORTING THE PRODUCT BY GRAVITY FROM SAID ENTRANCE TO SAID EXIT IN SAID DRYING CHAMBER, SAID PLATENS BEING INCLINED IN OPPOSITE DIRECTIONS IN SUCCESSIVE ONES OF SAID GROUPS, GATE MEANS INTERPOSED BETWEEN EACH OF SAID GROUPS OF PLATENS FOR CONTROLLING THE TRANSPORTATION OF THE PRODUCT BY SAID GROUPS, CONTROL MEANS FOR ACTUATING SAID GATE MEANS, TUBULAR MEANS INCLUDED IN THE PLATENS OF SAID GROUPS, AND PUMPING MEANS FOR CIRCULATING HOT FLUID THROUGH SAID TUBULAR MEANS.
Claim 2
Dependent Claim
137 words
1. FREEZE-DRYING APPARATUS FOR REMOVING ICE FROM A FROZEN PRODUCT BY SUBLIMATION INCLUDING: AN UPRIGHT DRYING CHAMBER HAVING AN ENTRANCE AT THE UPPER END THEREOF AND HAVING AN EXIT AT THE LOWER END THEREOF, A PLURALITY OF GROUPS OF INCLINED PLATENS MOUNTED IN SAID DRYING CHAMBER, SAID GROUPS BEING MOUNTED IN DISPLACED POSITIONS IN SAID DRYING CHAMBER ONE ABOVE THE OTHER FOR TRANSPORTING THE PRODUCT BY GRAVITY FROM SAID ENTRANCE TO SAID EXIT IN SAID DRYING CHAMBER, SAID PLATENS BEING INCLINED IN OPPOSITE DIRECTIONS IN SUCCESSIVE ONES OF SAID GROUPS, GATE MEANS INTERPOSED BETWEEN EACH OF SAID GROUPS OF PLATENS FOR CONTROLLING THE TRANSPORTATION OF THE PRODUCT BY SAID GROUPS, CONTROL MEANS FOR ACTUATING SAID GATE MEANS, TUBULAR MEANS INCLUDED IN THE PLATENS OF SAID GROUPS, AND PUMPING MEANS FOR CIRCULATING HOT FLUID THROUGH SAID TUBULAR MEANS.
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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) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |