US3221415A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for crop drying
Assignee: RA Lister and Co Ltd
•
Filing: 1962-06-04
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Granted: 1965-12-07
•
Expires: 1982-06-04
Abstract
No abstract record available.
Inventors
- 👤 Murray Patrick Anthony Molteno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:14
CPC Classifications
F; F26; F26B; F26B21/00; F26B21/001; F26B9/00; F26B9/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A METHOD FOR DRYING STEM CROPS INCLUDING GRAIN AND HAY COMPRISING (A) STACKING THE CROP FOR DRYING INTO A STACK OF A SINGLE HEAVY THICKNESS OF ABOUT 15 TO 20 FEET THUS PRESENTING STATIC PRESSURE RESISTANCE TO AIR BLOWN INTO THE STACK OF UP TO 7 INCHES WATER GAUGE, (B) BLOWING MASSIVE QUANTITIES OF AIR ON THE ORDER OF 12,000 TO 39,000 CUBIC FEET PER MINUTE INTO AND THROUGHOUT THE STACK AT A VELOCITY RATE OF AT LEAST 25 TO 40 FEET PER MINUTE, (C) ELEVATING THE TEMPERATURE OF THE AIR BEING BLOWN FROM 4 TO 15 DEGREES FAHRENHEIT ABOVE AMBIENT TEMPERATURE; AND (D) BLOWING THE AIR AT A FORCE SUFFICIENT TO OVERCOME PRESSURE RESISTANCE IN THE STACK OF UP TO 7 INCHES WATER GAUGE.
Claim 2
Independent Claim
125 words
A METHOD FOR DRYING STEM CROPS INCLUDING GRAIN AND HAY COMPRISING (A) STACKING THE CROP FOR DRYING INTO A STACK OF A SINGLE HEAVY THICKNESS OF ABOUT 15 TO 20 FEET THUS PRESENTING STATIC PRESSURE RESISTANCE TO AIR BLOWN INTO THE STACK OF UP TO 7 INCHES WATER GAUGE, (B) BLOWING MASSIVE QUANTITIES OF AIR ON THE ORDER OF 12,000 TO 39,000 CUBIC FEET PER MINUTE INTO AND THROUGHOUT THE STACK AT A VELOCITY RATE OF AT LEAST 25 TO 40 FEET PER MINUTE, (C) ELEVATING THE TEMPERATURE OF THE AIR BEING BLOWN FROM 4 TO 15 DEGREES FAHRENHEIT ABOVE AMBIENT TEMPERATURE; AND (D) BLOWING THE AIR AT A FORCE SUFFICIENT TO OVERCOME PRESSURE RESISTANCE IN THE STACK OF UP TO 7 INCHES WATER GAUGE.
References Cited (Backward Citations)
US1781473A
Cited
US2036127A
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US2562405A
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US2706506A
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US2653754A
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US3086533A
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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) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |