US3300873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grain dryer
Assignee: Hart Carter Co
•
Filing: 1964-05-12
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Granted: 1967-01-31
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Expires: 1984-05-12
Abstract
No abstract record available.
Inventors
- 👤 Jack D Bussell
- 👤 Walter P Dickens
- 👤 Frank N Eidsvoog
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:24
CPC Classifications
F; F26; F26B; F26B17/00; F26B17/12; F26B17/14; F26B17/1408; F26B17/1416
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
200 words
A DRYER FOR GRANULAR MATERIAL HAVING A TOWER WITH AN INLET PORT AT THE TOP THEREOF AND AN OUTLET PORT AT THE BOTTOM THEREOF AND A PLURALITY OF RACKS OF TUBULAR MEMBERS UNIFORMLY SPACED BETWEEN SAID INLET AND OUTLET PORTS AND ADAPTED TO CONVEY DRYING AIR INTO AND OUT OF SAID TOWER AND THROUGH THE GRANULAR MATERIAL WHICH IS MOVED IN THE TOWER FROM THE INLET PORT TO OUTLET PORT, THE IMPROVEMENT COMPRISING DUCT MEMBERS IN CERTAIN OF SAID RACKS FORMING EXHAUST DUCTS FOR THE DRYING AIR CIRCULATED THROUGH SAID TOWER, SAID DUCT MEMBERS IN SAID EXHAUST RACKS BEING FORMED OF A PAIR OF V SHAPED ELONGATED MEMBERS POSITIONED TO FORM V SHAPED TOPS AND BOTTOM AND WITH PARALLEL SIDES, A PLURALITY OF APERTURES POSITIONED ALONG THE BOTTOM V SHAPED ELONGATED MEMBERS WHICH APERTURES ARE SMALLER THAN THE SIZE OF THE GRANULAR MATERIAL WHICH FLOWS THROUGH SAID TOWER FROM THE INLET TO THE OUTLET PORT THEREOF, AND APERTURE MEANS AT ONE END OF EACH OF SAID DUCT MEMBERS FORMING EXHAUST PORTS IN WHICH THE CROSS SECTIONAL AREA OF THE APERTURE IS LESS THAN THE TOTAL CROSS SECTIONAL AREA OF ALL OF THE APERTURES IN A BOTTOM V SHAPED ELONGATED MEMBER.
Claim 2
Dependent Claim
200 words
A DRYER FOR GRANULAR MATERIAL HAVING A TOWER WITH AN INLET PORT AT THE TOP THEREOF AND AN OUTLET PORT AT THE BOTTOM THEREOF AND A PLURALITY OF RACKS OF TUBULAR MEMBERS UNIFORMLY SPACED BETWEEN SAID INLET AND OUTLET PORTS AND ADAPTED TO CONVEY DRYING AIR INTO AND OUT OF SAID TOWER AND THROUGH THE GRANULAR MATERIAL WHICH IS MOVED IN THE TOWER FROM THE INLET PORT TO OUTLET PORT, THE IMPROVEMENT COMPRISING DUCT MEMBERS IN CERTAIN OF SAID RACKS FORMING EXHAUST DUCTS FOR THE DRYING AIR CIRCULATED THROUGH SAID TOWER, SAID DUCT MEMBERS IN SAID EXHAUST RACKS BEING FORMED OF A PAIR OF V SHAPED ELONGATED MEMBERS POSITIONED TO FORM V SHAPED TOPS AND BOTTOM AND WITH PARALLEL SIDES, A PLURALITY OF APERTURES POSITIONED ALONG THE BOTTOM V SHAPED ELONGATED MEMBERS WHICH APERTURES ARE SMALLER THAN THE SIZE OF THE GRANULAR MATERIAL WHICH FLOWS THROUGH SAID TOWER FROM THE INLET TO THE OUTLET PORT THEREOF, AND APERTURE MEANS AT ONE END OF EACH OF SAID DUCT MEMBERS FORMING EXHAUST PORTS IN WHICH THE CROSS SECTIONAL AREA OF THE APERTURE IS LESS THAN THE TOTAL CROSS SECTIONAL AREA OF ALL OF THE APERTURES IN A BOTTOM V SHAPED ELONGATED MEMBER.
References Cited (Backward Citations)
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Cited
US1196979A
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US1346335A
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US1623553A
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US1685338A
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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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |