Patent US6411142B1 successfully refreshed from Google Patents.
US3129073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous grain dryer
Assignee: Individual
•
Filing: 1961-07-25
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Granted: 1964-04-14
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Expires: 1981-07-25
Abstract
No abstract record available.
Inventors
- 👤 Bernard C Mathews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:40
CPC Classifications
F; F26; F26B; F26B17/00; F26B17/12; F26B17/122
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A CONTINUOUS GRAIN DRYER, COMPRISING MEANS FEDINING A PAIR OF OPPOSED GRAIN COLUMNS EACH HAVING PERFORATED SIDE WALLS AND TERMINATING IN A LOWER DISCHARGE OPENING, HEATING MEANS FOR HEATING AIR, MEANS DIRECTING HEATED AIR THROUGH ONE PORTION OF SAID COLUMNS SO THAT GRAIN PASSING DOWNWARDLY THROUGH SAID COLUMNS IS DRIED, A VANED METERING SHAFT POSITIONED ADJACENT EACH OF SAID DISCHARGE OPENINGS, MEANS INCLUDING A PAWL AND RATCHET WHEEL FOR ROTATING EACH OF SAID METERING SHAFTS TO DISCHARGE GRAIN FROM SAID COLUMNS AT A PREDETERMINED RATE, AND MEANS RESPONSIVE TO THE TEMPERATURE OF THE GRAIN IN EACH OF SAID COLUMNS AND ARRANGED TO CONTROL THE PERIODS OF ENGAGEMENT OF EACH PAWL AND RATCHET WHEEL INDEPENDENTLY IN ACCORDANCE WITH THE TEMPERATURE OF THE GRAIN IN THE ASSOCIATED COLUMN.
Claim 2
Dependent Claim
126 words
A CONTINUOUS GRAIN DRYER, COMPRISING MEANS FEDINING A PAIR OF OPPOSED GRAIN COLUMNS EACH HAVING PERFORATED SIDE WALLS AND TERMINATING IN A LOWER DISCHARGE OPENING, HEATING MEANS FOR HEATING AIR, MEANS DIRECTING HEATED AIR THROUGH ONE PORTION OF SAID COLUMNS SO THAT GRAIN PASSING DOWNWARDLY THROUGH SAID COLUMNS IS DRIED, A VANED METERING SHAFT POSITIONED ADJACENT EACH OF SAID DISCHARGE OPENINGS, MEANS INCLUDING A PAWL AND RATCHET WHEEL FOR ROTATING EACH OF SAID METERING SHAFTS TO DISCHARGE GRAIN FROM SAID COLUMNS AT A PREDETERMINED RATE, AND MEANS RESPONSIVE TO THE TEMPERATURE OF THE GRAIN IN EACH OF SAID COLUMNS AND ARRANGED TO CONTROL THE PERIODS OF ENGAGEMENT OF EACH PAWL AND RATCHET WHEEL INDEPENDENTLY IN ACCORDANCE WITH THE TEMPERATURE OF THE GRAIN IN THE ASSOCIATED COLUMN.
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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) | 1967-04-14 | 1967-10-14 | 1968-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-14 | 1971-10-14 | 1972-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-14 | 1975-10-14 | 1976-04-14 | $7700.00 | Window Closed / Lapsed |