US2832690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of cooling and preserving lettuce and leafy vegetables
Assignee: WESTERN VEGETABLE INDUSTRIES Inc
•
Filing: 1955-08-08
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Granted: 1958-04-29
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Expires: 1975-08-08
Abstract
No abstract record available.
Inventors
- 👤 Brunsing Rex Louis
- 👤 Wells A Webb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:28
CPC Classifications
A; A23; A23B; A23B7/00; A23B7/04; A23B7/0425; A23B7/0433; A23B2/00; A23B2/10; A23B2/103; A23B7/14; A23B7/144; A23B7/148
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
THE METHOD OF COOLING OF ALOAD OF FRUIT AND VEGETABLE PRODUCTS HAVING UNEQUAL DISTRIBUTION OF SUFFICIENT VAPORIZABLE MOISTURE ON ACCESSIBLE SURFACES ON AND WITHIN THE BODIES OF SAID PRODUCTS, SAID METHOD COMPRISING THE STEPS OF: PLACING SAID LOAD WITHIN AN ENCLOSED SPACE AT ATMOSPHERIC-PRESSURE, WITHDRAWING AIR AND VAPORS FROM WITHIN SAID SPACE UNTIL A FIRST PRESSURE IS REACHES WHICH WOULD CAUSE THE BODIES OF SAID PRODUCTS ULTIMATELY TO FALL BELOW 32*F., THE PRESSURE IN SAID SPACE BEING REDUCED TO SAID FIRST PRESSURE TO CAUSE SAID LOADS TO COOL VERY RAPIDLY, MAINTAINING SAID PRESSURE WITHIN SAID SPACE ONLY UNTIL THE COLDEST PORTION OF SAID LOAD FIRST REACHES 32*F. AND WARMER PORTIONS REACH TEMPERATURES HGHER THAN 32*F., RAISINING THE PRESSURE IN SAID SPACE TO A SECOND VALUE TO PREVENT SAID COLDEST PORTION OF SAID LOAD FROM FALLING BELOW 32*F., MAINTAINING SAID SECOND PRESSURE IN SAID SPACE UNTIL ALL PORTIONS OF SAID LOAD HAVE THE SAME TEMPERATURE, AND REPEATING EACH OF SAID STEPS UNTIL ALL PORTIONS OF SAID LOAD ARE AT 32*F.
Claim 2
Independent Claim
169 words
THE METHOD OF COOLING OF ALOAD OF FRUIT AND VEGETABLE PRODUCTS HAVING UNEQUAL DISTRIBUTION OF SUFFICIENT VAPORIZABLE MOISTURE ON ACCESSIBLE SURFACES ON AND WITHIN THE BODIES OF SAID PRODUCTS, SAID METHOD COMPRISING THE STEPS OF: PLACING SAID LOAD WITHIN AN ENCLOSED SPACE AT ATMOSPHERIC-PRESSURE, WITHDRAWING AIR AND VAPORS FROM WITHIN SAID SPACE UNTIL A FIRST PRESSURE IS REACHES WHICH WOULD CAUSE THE BODIES OF SAID PRODUCTS ULTIMATELY TO FALL BELOW 32*F., THE PRESSURE IN SAID SPACE BEING REDUCED TO SAID FIRST PRESSURE TO CAUSE SAID LOADS TO COOL VERY RAPIDLY, MAINTAINING SAID PRESSURE WITHIN SAID SPACE ONLY UNTIL THE COLDEST PORTION OF SAID LOAD FIRST REACHES 32*F. AND WARMER PORTIONS REACH TEMPERATURES HGHER THAN 32*F., RAISINING THE PRESSURE IN SAID SPACE TO A SECOND VALUE TO PREVENT SAID COLDEST PORTION OF SAID LOAD FROM FALLING BELOW 32*F., MAINTAINING SAID SECOND PRESSURE IN SAID SPACE UNTIL ALL PORTIONS OF SAID LOAD HAVE THE SAME TEMPERATURE, AND REPEATING EACH OF SAID STEPS UNTIL ALL PORTIONS OF SAID LOAD ARE AT 32*F.
References Cited (Backward Citations)
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US2621492A
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US2634590A
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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) | 1961-04-28 | 1961-10-28 | 1962-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-28 | 1965-10-28 | 1966-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-28 | 1969-10-28 | 1970-04-29 | $7700.00 | Window Closed / Lapsed |